{"id":8849,"date":"2026-08-25T12:25:40","date_gmt":"2026-08-25T03:25:40","guid":{"rendered":"https:\/\/venu-sys.co.jp\/jo-sys\/?p=8849"},"modified":"2026-08-25T12:25:40","modified_gmt":"2026-08-25T03:25:40","slug":"mail-security","status":"publish","type":"post","link":"https:\/\/venu-sys.co.jp\/jo-sys\/8849\/","title":{"rendered":"\u3010\u7dcf\u52d9\u7701\u30fbIPA\u30c7\u30fc\u30bf\u3011\u30e1\u30fc\u30eb\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u5bfe\u7b56\u306e\u512a\u5148\u9806\u4f4d\uff5cDMARC\u5c0e\u5165\u738732.6%\uff082024\u5e749\u6708\u6642\u70b9\uff09\u3068\u4e2d\u5c0f\u4f01\u696d\u306e\u5b9f\u614b"},"content":{"rendered":"<p>\u300c\u3053\u306e\u30e1\u30fc\u30eb\u3001\u958b\u3044\u3066\u3082\u5927\u4e08\u592b\u3067\u3057\u3087\u3046\u304b\u300d\u3068\u3044\u3046\u76f8\u8ac7\u306f\u6765\u308b\u306e\u306b\u3001\u6839\u672c\u7684\u306a\u5bfe\u7b56\u3068\u306a\u308b\u3068\u624b\u304c\u6b62\u307e\u308b\u3002\u30e1\u30fc\u30eb\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u306f\u3001\u305d\u3093\u306a\u60a9\u307f\u304c\u96c6\u307e\u308a\u3084\u3059\u3044\u9818\u57df\u3067\u3059\u3088\u306d\u3002<\/p>\n<ul>\n<li>\u602a\u3057\u3044\u30e1\u30fc\u30eb\u306e\u76f8\u8ac7\u306f\u6765\u308b\u3051\u308c\u3069\u3001\u4f55\u304b\u3089\u624b\u3092\u4ed8\u3051\u308c\u3070\u3044\u3044\u304b\u5206\u304b\u3089\u306a\u3044<\/li>\n<li>SPF\u3084DMARC\u3068\u3044\u3046\u8a00\u8449\u306f\u805e\u304f\u304c\u3001\u81ea\u793e\u306b\u5fc5\u8981\u306a\u306e\u304b\u5224\u65ad\u3067\u304d\u306a\u3044<\/li>\n<li>\u4e88\u7b97\u3082\u4eba\u624b\u3082\u306a\u3044\u4e2d\u3067\u3001\u305b\u3081\u3066\u512a\u5148\u9806\u4f4d\u3060\u3051\u3067\u3082\u6c7a\u3081\u305f\u3044<\/li>\n<\/ul>\n<p>\u3053\u306e\u8a18\u4e8b\u3067\u306f\u3001\u3053\u3046\u3057\u305f\u60a9\u307f\u306b\u516c\u7684\u30c7\u30fc\u30bf\u3067\u7b54\u3048\u307e\u3059\u3002\u7d50\u8ad6\u304b\u3089\u8a00\u3046\u3068\u3001\u7740\u624b\u3059\u308b\u9806\u756a\u306f\u300c\u8a2d\u5b9a\u3059\u308b\u3060\u3051\u3067\u52b9\u304f\u624b\u6bb5 \u2192 \u9001\u4fe1\u30c9\u30e1\u30a4\u30f3\u8a8d\u8a3c \u2192 \u904b\u7528\u30eb\u30fc\u30eb\u300d\u3067\u3059\u3002\u88fd\u54c1\u306e\u6bd4\u8f03\u304b\u3089\u5165\u308b\u5fc5\u8981\u306f\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n<p>\u7dcf\u52d9\u7701\u30fbIPA\u30fbJPCERT\/CC\u30fb\u8b66\u5bdf\u5e81\u306e\u7d71\u8a08\u3092\u4e26\u3079\u308b\u3068\u3001\u305d\u306e\u7406\u7531\u304c\u898b\u3048\u3066\u304d\u307e\u3059\u3002\u8105\u5a01\u306e\u5b9f\u614b\u3001\u81ea\u793e\u306e\u7acb\u3061\u4f4d\u7f6e\u3001\u5bfe\u7b56\u306e\u512a\u5148\u9806\u4f4d\u3001\u305d\u3057\u3066\u30e1\u30fc\u30eb\u5bfe\u7b56\u306e\u9650\u754c\u307e\u3067\u3001\u9806\u756a\u306b\u78ba\u8a8d\u3057\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n<p><strong>\u3053\u306e\u8a18\u4e8b\u306e\u30dd\u30a4\u30f3\u30c8<\/strong><\/p>\n<ul>\n<li>\u30d5\u30a3\u30c3\u30b7\u30f3\u30b0\u30b5\u30a4\u30c8\u306e\u5831\u544a\u306f2025\u5e741\u301c3\u6708\u30675,267\u4ef6\u3068\u9ad8\u6b62\u307e\u308a\uff08\u51fa\u5178: <a target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/www.jpcert.or.jp\/pr\/2025\/IR_Report2024Q4.pdf\">JPCERT\/CC\u300c\u30a4\u30f3\u30b7\u30c7\u30f3\u30c8\u5831\u544a\u5bfe\u5fdc\u30ec\u30dd\u30fc\u30c8\u300d<\/a>\uff09<\/li>\n<li>\u306a\u308a\u3059\u307e\u3057\u5bfe\u7b56\u306e\u8981\u306b\u306a\u308bDMARC\u306eJP\u30c9\u30e1\u30a4\u30f3\u5c0e\u5165\u7387\u306f\u30012024\u5e749\u6708\u6642\u70b9\u3067<mark>32.6%<\/mark>\uff08\u51fa\u5178: <a target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/www.soumu.go.jp\/johotsusintokei\/whitepaper\/ja\/r07\/html\/nd21a240.html\">\u7dcf\u52d9\u7701\u300c\u4ee4\u548c7\u5e74\u7248 \u60c5\u5831\u901a\u4fe1\u767d\u66f8\u300d<\/a>\uff09<\/li>\n<li>\u60c5\u5831\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u5bfe\u7b56\u3092\u7d44\u7e54\u7684\u306b\u306f\u884c\u3063\u3066\u3044\u306a\u3044\u4e2d\u5c0f\u4f01\u696d\u7b49\u306f2024\u5e74\u8abf\u67fb\u306769.7%\uff08\u51fa\u5178: <a target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/www.ipa.go.jp\/security\/reports\/sme\/nl10bi000000fbvc-att\/sme-chousa-report2024r1.pdf\">IPA\u300c2024\u5e74\u5ea6 \u4e2d\u5c0f\u4f01\u696d\u306b\u304a\u3051\u308b\u60c5\u5831\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u5bfe\u7b56\u306b\u95a2\u3059\u308b\u5b9f\u614b\u8abf\u67fb\u300d<\/a>\uff09<\/li>\n<\/ul>\n<h2>\u30e1\u30fc\u30eb\u3092\u72d9\u3046\u8105\u5a01\u306f\u3001\u30d5\u30a3\u30c3\u30b7\u30f3\u30b0\u30fb\u6a19\u7684\u578b\u653b\u6483\u30fb\u30d3\u30b8\u30cd\u30b9\u30e1\u30fc\u30eb\u8a50\u6b3a\u306e3\u3064\u306b\u6574\u7406\u3067\u304d\u308b<\/h2>\n<p><img decoding=\"async\" alt=\"\u30e1\u30fc\u30eb\u3092\u72d9\u30463\u3064\u306e\u8105\u5a01\" src=\"https:\/\/venu-sys.co.jp\/jo-sys\/wp-content\/uploads\/sites\/2\/2026\/08\/h2-1-24.png\" \/><\/p>\n<p>\u30e1\u30fc\u30eb\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u3068\u306f\u3001\u30e1\u30fc\u30eb\u3092\u7d4c\u7531\u3057\u305f\u653b\u6483\u3068\u60c5\u5831\u6f0f\u3048\u3044\u3092\u9632\u3050\u305f\u3081\u306e\u3001\u6280\u8853\u3068\u904b\u7528\u306e\u7dcf\u79f0\u3067\u3059\u3002\u7279\u5b9a\u306e\u88fd\u54c1\u3084\u6a5f\u80fd\u3092\u6307\u3059\u8a00\u8449\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u53d7\u4fe1\u5074\u306e\u30d5\u30a3\u30eb\u30bf\u304b\u3089\u793e\u5185\u306e\u78ba\u8a8d\u30eb\u30fc\u30eb\u307e\u3067\u304c\u3001\u3053\u306e\u8a00\u8449\u306e\u7bc4\u56f2\u306b\u5165\u308a\u307e\u3059\u3002<\/p>\n<p>\u60c5\u30b7\u30b9\u304c\u62bc\u3055\u3048\u3066\u304a\u304d\u305f\u3044\u8105\u5a01\u306f\u3001\u5927\u304d\u304f3\u3064\u306b\u6574\u7406\u3067\u304d\u307e\u3059\u3002\u4ef6\u6570\u306e\u591a\u3055\u3067\u4e0d\u5b89\u3092\u3042\u304a\u308b\u5fc5\u8981\u306f\u3042\u308a\u307e\u305b\u3093\u3002<strong>\u653b\u6483\u306e\u5165\u53e3\u3068\u3057\u3066\u30e1\u30fc\u30eb\u304c\u4f7f\u308f\u308c\u308b<\/strong>\u3001\u3068\u3044\u3046\u4f4d\u7f6e\u3065\u3051\u3067\u6349\u3048\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<ul>\n<li>\u30d5\u30a3\u30c3\u30b7\u30f3\u30b0: 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decoding=\"async\" alt=\"JPCERT\/CC\u3078\u306e\u30d5\u30a3\u30c3\u30b7\u30f3\u30b0\u30b5\u30a4\u30c8\u5831\u544a\u4ef6\u6570\u306e\u56db\u534a\u671f\u63a8\u79fb\uff082023\u5e7410\u6708\u301c2025\u5e743\u6708\uff09\" src=\"https:\/\/venu-sys.co.jp\/jo-sys\/wp-content\/uploads\/sites\/2\/2026\/08\/chart-1-phishing-trend.png\" \/><\/p>\n<p style=\"font-size:13px;color:#777;margin:0.5em 0 0\">\u56f3\u306e\u51fa\u5178: <a target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/www.jpcert.or.jp\/pr\/2024\/IR_Report2023Q3.pdf\">JPCERT\/CC\u300c\u30a4\u30f3\u30b7\u30c7\u30f3\u30c8\u5831\u544a\u5bfe\u5fdc\u30ec\u30dd\u30fc\u30c8\u300d2023\u5e7410\u301c12\u6708<\/a>\u307b\u304b\u5404\u56db\u534a\u671f\u53f7<\/p>\n<h3>\u6a19\u7684\u578b\u653b\u6483\u306f10\u5927\u8105\u5a012026\u3067\u7d44\u7e545\u4f4d\u300111\u5e74\u9023\u7d9a\u3067\u9078\u3070\u308c\u7d9a\u3051\u3066\u3044\u308b<\/h3>\n<p>\u6a19\u7684\u578b\u653b\u6483\u306f\u3001\u9577\u671f\u306b\u308f\u305f\u3063\u3066\u8b66\u6212\u3055\u308c\u7d9a\u3051\u3066\u3044\u308b\u8105\u5a01\u3067\u3059\u3002IPA\u300c\u60c5\u5831\u30bb\u30ad\u30e5\u30ea\u30c6\u30a310\u5927\u8105\u5a01 2026\u300d\u3067\u306f\u7d44\u7e54\u5411\u3051\u7b2c5\u4f4d\u3067\u30012016\u5e74\u306e\u521d\u9078\u51fa\u304b\u308911\u5e74\u9023\u7d9a\u306e\u9078\u51fa\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<p>\u624b\u53e3\u306e\u4e2d\u5fc3\u306f\u3001\u6dfb\u4ed8\u30d5\u30a1\u30a4\u30eb\u3084\u672c\u6587\u4e2d\u306e\u30ea\u30f3\u30af\u306b\u30de\u30eb\u30a6\u30a7\u30a2\u3092\u4ed5\u8fbc\u3080\u5f62\u3067\u3059\u3002\u4ef6\u540d\u3084\u5dee\u51fa\u4eba\u540d\u304c\u696d\u52d9\u3084\u53d6\u5f15\u306b\u95a2\u4fc2\u3059\u308b\u3082\u306e\u3078\u507d\u88c5\u3055\u308c\u3001\u5b9f\u5728\u3059\u308b\u7d44\u7e54\u540d\u304c\u4f7f\u308f\u308c\u308b\u3053\u3068\u3082\u3042\u308a\u307e\u3059\u3002<\/p>\n<p>\u4e00\u65b9\u3067\u3001\u4ef6\u6570\u7d71\u8a08\u3067\u306e\u898b\u3048\u65b9\u306f\u5bfe\u7167\u7684\u3067\u3059\u3002JPCERT\/CC\u306e\u300c\u6a19\u7684\u578b\u653b\u6483\u300d\u5206\u985e\u306e\u5831\u544a\u4ef6\u6570\u306f\u30012023\u5e7410\u301c12\u6708\u304b\u3089\u9806\u306b1\u4ef6\u30014\u4ef6\u30012\u4ef6\u30016\u4ef6\u30012\u4ef6\u30011\u4ef6\u3067\u3057\u305f\u30026\u56db\u534a\u671f\u3092\u5408\u8a08\u3057\u3066\u308216\u4ef6\u3067\u3059\u3002<\/p>\n<p>\u3053\u306e2\u3064\u306e\u6570\u5b57\u304b\u3089\u8aad\u307f\u53d6\u308c\u308b\u306e\u306f\u3001\u4e21\u8005\u304c\u6e2c\u3063\u3066\u3044\u308b\u3082\u306e\u304c\u9055\u3046\u3068\u3044\u3046\u70b9\u3067\u3059\u3002JPCERT\/CC\u306e\u6570\u5b57\u306f\u4efb\u610f\u306e\u5c4a\u51fa\u306e\u5206\u985e\u7d50\u679c\u3067\u3001\u6a19\u7684\u578b\u653b\u6483\u306f\u88ab\u5bb3\u7d44\u7e54\u304c\u516c\u8868\u3082\u5c4a\u51fa\u3082\u3057\u306b\u304f\u3044\u6027\u8cea\u3092\u6301\u3061\u307e\u3059\u3002IPA\u306e\u9806\u4f4d\u306f\u793e\u4f1a\u7684\u5f71\u97ff\u306e\u5927\u304d\u3055\u3092\u3082\u3068\u306b\u3057\u305f\u6295\u7968\u3067\u6c7a\u307e\u308b\u3082\u306e\u3067\u3001\u767a\u751f\u4ef6\u6570\u306e\u6307\u6a19\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n<p>\u540c\u3058JPCERT\/CC\u306e\u5206\u985e\u3067\u3082\u3001\u30d5\u30a3\u30c3\u30b7\u30f3\u30b0\u30b5\u30a4\u30c8\u306f5,267\u4ef6\u3068\u6841\u304c3\u3064\u9055\u3044\u307e\u3059\u3002\u305f\u3060\u3057\u3053\u308c\u306f\u5371\u967a\u5ea6\u306e\u5dee\u3067\u306f\u306a\u304f\u3001\u5831\u544a\u306e\u3055\u308c\u3084\u3059\u3055\u306e\u5dee\u3067\u3059\u3002<strong>\u5c4a\u51fa\u4ef6\u6570\u304c\u5c11\u306a\u3044\u3053\u3068\u3092\u300c\u81ea\u793e\u306b\u306f\u6765\u306a\u3044\u300d\u3068\u8aad\u3080\u306e\u306f\u8aa4\u308a\u3067\u3059<\/strong>\u3002<\/p>\n<div style=\"border:2px solid #eb6834;border-radius:8px;background:#fdf3ee;padding:14px 18px;margin:1.5em 0\">\n<p style=\"margin:0 0 8px;font-weight:700;color:#c2521f\">\u6ce8\u610f<\/p>\n<p style=\"margin:0\">JPCERT\/CC\u306e\u300c\u6a19\u7684\u578b\u653b\u6483\u300d\u306f\u5206\u985e\u306e\u5b9a\u7fa9\u304c\u72ed\u304f\u3001\u30de\u30eb\u30a6\u30a7\u30a2\u304c\u6dfb\u4ed8\u3055\u308c\u305f\u306a\u308a\u3059\u307e\u3057\u30e1\u30fc\u30eb\u306a\u3069\u306b\u9650\u3089\u308c\u307e\u3059\u3002\u6a19\u7684\u578b\u306e\u624b\u53e3\u3067\u3042\u3063\u3066\u3082\u3001\u30d5\u30a3\u30c3\u30b7\u30f3\u30b0\u30b5\u30a4\u30c8\u3084\u30de\u30eb\u30a6\u30a7\u30a2\u30b5\u30a4\u30c8\u3068\u3057\u3066\u5225\u306e\u5206\u985e\u306b\u8a08\u4e0a\u3055\u308c\u3066\u3044\u308b\u6848\u4ef6\u304c\u3042\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002\u307e\u305fIPA\u306e10\u5927\u8105\u5a01\u306f\u6295\u7968\u306b\u3088\u308b\u9806\u4f4d\u4ed8\u3051\u3067\u3042\u308a\u3001\u88ab\u5bb3\u306e\u767a\u751f\u4ef6\u6570\u3092\u8ffd\u8de1\u3057\u305f\u6307\u6a19\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u30022\u3064\u306e\u7d71\u8a08\u3092\u5272\u308a\u7b97\u3057\u3066\u6bd4\u8f03\u3059\u308b\u3053\u3068\u306f\u3067\u304d\u307e\u305b\u3093\u3002<\/p>\n<\/div>\n<h3>\u30d3\u30b8\u30cd\u30b9\u30e1\u30fc\u30eb\u8a50\u6b3a\u306f\u7d44\u7e5410\u4f4d\u3067\u30011\u4ef6\u3067\u7d041,400\u4e07\u5186\u306e\u88ab\u5bb3\u4e8b\u4f8b\u304c\u516c\u8868\u3055\u308c\u3066\u3044\u308b<\/h3>\n<p>\u30d3\u30b8\u30cd\u30b9\u30e1\u30fc\u30eb\u8a50\u6b3a\uff08BEC\uff09\u306f\u3001\u91d1\u92ad\u88ab\u5bb3\u304c\u76f4\u63a5\u767a\u751f\u3059\u308b\u70b9\u3067\u4ed6\u306e\u8105\u5a01\u3068\u6027\u8cea\u304c\u7570\u306a\u308a\u307e\u3059\u3002IPA\u300c\u60c5\u5831\u30bb\u30ad\u30e5\u30ea\u30c6\u30a310\u5927\u8105\u5a01 2026\u300d\u3067\u306f\u7d44\u7e54\u5411\u3051\u7b2c10\u4f4d\u3067\u30012018\u5e74\u306e\u521d\u9078\u51fa\u304b\u30899\u5e74\u9023\u7d9a\u306e\u9078\u51fa\u3067\u3059\u3002<\/p>\n<p>\u653b\u6483\u8005\u306f\u3001\u7d4c\u55b6\u8005\u30fb\u53d6\u5f15\u5148\u30fb\u5f01\u8b77\u58eb\u306a\u3069\u306b\u306a\u308a\u3059\u307e\u3057\u3066\u865a\u507d\u306e\u30e1\u30fc\u30eb\u3092\u9001\u308a\u307e\u3059\u3002\u4e8b\u524d\u306b\u7a83\u53d6\u3057\u305f\u3084\u308a\u53d6\u308a\u3092\u3082\u3068\u306b\u3001\u6b63\u898f\u306e\u8acb\u6c42\u66f8\u306e\u53e3\u5ea7\u60c5\u5831\u3092\u5dee\u3057\u66ff\u3048\u308b\u624b\u9806\u304c\u5178\u578b\u3067\u3059\u3002\u751f\u6210AI\u306e\u60aa\u7528\u306b\u3088\u3063\u3066\u3001\u6587\u9762\u306e\u81ea\u7136\u3055\u3084\u624b\u53e3\u306e\u591a\u69d8\u5316\u3082\u9032\u3093\u3067\u3044\u307e\u3059\u3002<\/p>\n<p>\u540c\u89e3\u8aac\u66f8\u304c\u5f15\u304f\u4e8b\u4f8b\u3067\u306f\u3001\u5b50\u4f1a\u793e\u304c\u865a\u507d\u306e\u652f\u6255\u4f9d\u983c\u306b\u5fdc\u3058\u30012025\u5e741\u6708\u306b\u7d041,400\u4e07\u5186\u304c\u52d5\u304d\u307e\u3057\u305f\u3002<strong>1\u4ef6\u3042\u305f\u308a\u306e\u640d\u5931\u304c\u5927\u304d\u3044<\/strong>\u3053\u3068\u304c\u3001\u3053\u306e\u653b\u6483\u306e\u7279\u5fb4\u3067\u3059\u3002<\/p>\n<p>\u305f\u3060\u3057\u3053\u308c\u306f1\u793e\u304c\u516c\u8868\u3057\u305f\u4e8b\u4f8b\u3067\u3042\u308a\u3001\u56fd\u5185\u306eBEC\u88ab\u5bb3\u306e\u5e73\u5747\u50cf\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u56fd\u5185\u306e\u88ab\u5bb3\u4ef6\u6570\u30fb\u88ab\u5bb3\u7dcf\u984d\u306e\u516c\u7684\u7d71\u8a08\u306f\u3001\u4eca\u56de\u306e\u8abf\u67fb\u7bc4\u56f2\u3067\u306f\u78ba\u8a8d\u3067\u304d\u307e\u305b\u3093\u3067\u3057\u305f\u3002\u5177\u4f53\u7684\u306a\u5bfe\u7b56\u306f\u3001\u8a18\u4e8b\u5f8c\u534a\u306e\u904b\u7528\u30eb\u30fc\u30eb\u306e\u30d1\u30fc\u30c8\u3067\u6271\u3044\u307e\u3059\u3002<\/p>\n<table>\n<thead>\n<tr>\n<th>\u30e1\u30fc\u30eb\u306b\u95a2\u308f\u308b\u8105\u5a01\uff0810\u5927\u8105\u5a012026\u30fb\u7d44\u7e54\uff09<\/th>\n<th>\u9806\u4f4d<\/th>\n<th>\u9023\u7d9a\u9078\u51fa\u5e74\u6570<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u6a5f\u5bc6\u60c5\u5831\u3092\u72d9\u3063\u305f\u6a19\u7684\u578b\u653b\u6483<\/td>\n<td>5\u4f4d<\/td>\n<td>11\u5e74\u9023\u7d9a<\/td>\n<\/tr>\n<tr>\n<td>\u30d3\u30b8\u30cd\u30b9\u30e1\u30fc\u30eb\u8a50\u6b3a<\/td>\n<td>10\u4f4d<\/td>\n<td>9\u5e74\u9023\u7d9a<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p style=\"font-size:13px;color:#777;margin:0.5em 0 0\">\u8868\u306e\u51fa\u5178: <a target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/www.ipa.go.jp\/security\/10threats\/omgdg50000008fi8-att\/kaisetsu_2026_soshiki.pdf\">\u60c5\u5831\u51e6\u7406\u63a8\u9032\u6a5f\u69cb\u300c\u60c5\u5831\u30bb\u30ad\u30e5\u30ea\u30c6\u30a310\u5927\u8105\u5a01 2026\u300d\u7d44\u7e54\u7de8 \u89e3\u8aac\u66f8<\/a>\uff082026\u5e74\uff09<\/p>\n<p style=\"font-size:13px;color:#777;margin:1em 0 0\">\u51fa\u5178: <a target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/www.ipa.go.jp\/security\/10threats\/omgdg50000008fi8-att\/kaisetsu_2026_soshiki.pdf\">\u60c5\u5831\u51e6\u7406\u63a8\u9032\u6a5f\u69cb\u300c\u60c5\u5831\u30bb\u30ad\u30e5\u30ea\u30c6\u30a310\u5927\u8105\u5a01 2026\u300d\u7d44\u7e54\u7de8 \u89e3\u8aac\u66f8<\/a>\uff0f<a target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/www.ipa.go.jp\/security\/10threats\/omgdg50000008fi8-att\/setsumei_2026_kojin.pdf\">\u540c\u300c\u60c5\u5831\u30bb\u30ad\u30e5\u30ea\u30c6\u30a310\u5927\u8105\u5a01 2026\u300d\u500b\u4eba\u7de8 \u30cf\u30f3\u30c9\u30d6\u30c3\u30af<\/a>\uff0f<a target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/www.jpcert.or.jp\/pr\/2025\/IR_Report2024Q4.pdf\">JPCERT\/CC\u300c\u30a4\u30f3\u30b7\u30c7\u30f3\u30c8\u5831\u544a\u5bfe\u5fdc\u30ec\u30dd\u30fc\u30c8\u300d\u5404\u56db\u534a\u671f\u53f7<\/a><\/p>\n<h2>\u4e2d\u5c0f\u4f01\u696d\u3067\u30e1\u30fc\u30eb\u5bfe\u7b56\u304c\u56de\u3089\u306a\u3044\u7406\u7531\u306f\u3001\u62c5\u5f53\u8005\u4e0d\u5728\u304c\u5e38\u614b\u5316\u3057\u3066\u3044\u308b\u3053\u3068<\/h2>\n<p><img decoding=\"async\" alt=\"\u62c5\u5f53\u8005\u4e0d\u5728\u306e\u5b9f\u614b\" src=\"https:\/\/venu-sys.co.jp\/jo-sys\/wp-content\/uploads\/sites\/2\/2026\/08\/h2-2-24.png\" \/><\/p>\n<p>\u8105\u5a01\u306e\u4e00\u89a7\u3092\u898b\u3066\u3082\u624b\u304c\u52d5\u304b\u306a\u3044\u3068\u3057\u305f\u3089\u3001\u539f\u56e0\u306f\u77e5\u8b58\u3067\u306f\u306a\u304f\u4f53\u5236\u306b\u3042\u308a\u307e\u3059\u3002<a href=\"https:\/\/venu-sys.co.jp\/jo-sys\/8800\/\">\u4e2d\u5c0f\u4f01\u696d\u306e\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u5bfe\u7b56<\/a>\u304c\u9032\u307e\u306a\u3044\u80cc\u666f\u306b\u306f\u3001\u5bfe\u7b56\u3092\u62c5\u5f53\u3059\u308b\u4eba\u304c\u305d\u3082\u305d\u3082\u3044\u306a\u3044\u3068\u3044\u3046\u4e8b\u60c5\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<p>\u6570\u5024\u3067\u78ba\u8a8d\u3057\u307e\u3057\u3087\u3046\u3002IPA\u304c2024\u5e74\u306b\u5b9f\u65bd\u3057\u305f\u4e2d\u5c0f\u4f01\u696d\u5b9f\u614b\u8abf\u67fb\uff08\u6709\u52b9\u56de\u7b544,191\u4ef6\uff09\u306e\u7d50\u679c\u3067\u3059\u3002\u60c5\u5831\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u5bfe\u7b56\u3092\u7d44\u7e54\u7684\u306b\u306f\u884c\u308f\u305a\u3001\u5404\u81ea\u306e\u5bfe\u5fdc\u306b\u4efb\u305b\u3066\u3044\u308b\u4f01\u696d\u304c69.7%\u3067\u3057\u305f\u3002<\/p>\n<p>\u5c02\u9580\u90e8\u7f72\uff08\u62c5\u5f53\u8005\uff09\u304c\u3042\u308b\u306e\u306f9.3%\u3001\u517c\u52d9\u3067\u62c5\u5f53\u8005\u304c\u4efb\u547d\u3055\u308c\u3066\u3044\u308b\u306e\u304c21.0%\u3067\u3059\u3002<\/p>\n<p>\u306a\u304a\u3053\u306e\u8abf\u67fb\u306f\u30012024\u5e7410\u670825\u65e5\u304b\u308911\u67086\u65e5\u306b\u5b9f\u65bd\u3055\u308c\u305fWeb\u30a2\u30f3\u30b1\u30fc\u30c8\u30e2\u30cb\u30bf\u8abf\u67fb\u3067\u3059\u3002\u88ab\u5bb3\u306e\u5c4a\u51fa\u3092\u96c6\u8a08\u3057\u305f\u3082\u306e\u3067\u306f\u306a\u3044\u70b9\u306f\u3001\u793e\u5185\u3067\u5171\u6709\u3059\u308b\u3068\u304d\u306b\u6dfb\u3048\u3066\u304a\u3044\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<div style=\"border:2px solid #2d4f8f;border-radius:8px;background:#f2f5fb;padding:14px 18px;margin:1.5em 0\">\n<p style=\"margin:0 0 8px;font-weight:700;color:#2d4f8f\">\u30dd\u30a4\u30f3\u30c8<\/p>\n<ul style=\"margin:0;padding-left:20px\">\n<li>\u30e1\u30fc\u30eb\u5bfe\u7b56\u3068\u3057\u3066\u7d39\u4ecb\u3055\u308c\u308b\u9805\u76ee\u306e\u591a\u304f\u306f\u3001<strong>\u8ab0\u304b\u304c\u7d99\u7d9a\u3057\u3066\u904b\u7528\u3059\u308b\u524d\u63d0<\/strong>\u3067\u8a2d\u8a08\u3055\u308c\u3066\u3044\u308b<\/li>\n<li>\u4e0d\u5be9\u30e1\u30fc\u30eb\u306e\u5831\u544a\u5148\u3092\u6c7a\u3081\u308b\u3001\u632f\u8fbc\u5148\u306e\u5909\u66f4\u4f9d\u983c\u3092\u96fb\u8a71\u3067\u78ba\u8a8d\u3059\u308b\u3068\u3044\u3063\u305f\u9805\u76ee\u306f\u3001\u904b\u7528\u306e\u62c5\u3044\u624b\u304c\u3044\u3066\u521d\u3081\u3066\u6210\u7acb\u3059\u308b<\/li>\n<li>\u62c5\u5f53\u8005\u304c\u4e0d\u5728\u306e\u4f01\u696d\u3067\u306f\u3001\u5bfe\u7b56\u306e\u5185\u5bb9\u3088\u308a\u3082\u300c\u904b\u7528\u3092\u5fc5\u8981\u3068\u3057\u306a\u3044\u624b\u6bb5\u304b\u3089\u4e26\u3079\u308b\u300d\u3053\u3068\u304c\u5148\u306b\u306a\u308b<\/li>\n<\/ul>\n<\/div>\n<h3>\u5c0f\u898f\u6a21\u4f01\u696d\u8005\u3067\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u306e\u62c5\u5f53\u8005\u304c\u3044\u308b\u4f01\u696d\u306f15.5%\u306b\u3068\u3069\u307e\u308b<\/h3>\n<p>\u4f53\u5236\u306e\u5dee\u306f\u3001\u4f01\u696d\u898f\u6a21\u306b\u3088\u3063\u3066\u306f\u3063\u304d\u308a\u5206\u304b\u308c\u307e\u3059\u3002\u540c\u30582024\u5e74\u306eIPA\u8abf\u67fb\u3092\u898f\u6a21\u5225\u306b\u898b\u308b\u3068\u3001\u62c5\u5f53\u8005\u304c\u3044\u308b\u4f01\u696d\u306e\u5272\u5408\u306f\u6b21\u306e\u3068\u304a\u308a\u3067\u3059\u3002<\/p>\n<table>\n<thead>\n<tr>\n<th>\u533a\u5206<\/th>\n<th>\u5c02\u9580\u90e8\u7f72\uff08\u62c5\u5f53\u8005\uff09\u304c\u3042\u308b<\/th>\n<th>\u517c\u52d9\u3060\u304c\u62c5\u5f53\u8005\u304c\u4efb\u547d\u3055\u308c\u3066\u3044\u308b<\/th>\n<th>\u62c5\u5f53\u8005\u304c\u3044\u308b\u4f01\u696d\u306e\u5408\u8a08<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u5c0f\u898f\u6a21\u4f01\u696d\u8005\uff08n=2,775\uff09<\/td>\n<td>4.4%<\/td>\n<td>11.1%<\/td>\n<td>15.5%<\/td>\n<\/tr>\n<tr>\n<td>\u4e2d\u5c0f\u4f01\u696d100\u540d\u4ee5\u4e0b\uff08n=1,121\uff09<\/td>\n<td>14.8%<\/td>\n<td>37.6%<\/td>\n<td>52.4%<\/td>\n<\/tr>\n<tr>\n<td>\u4e2d\u5c0f\u4f01\u696d101\u540d\u4ee5\u4e0a\uff08n=295\uff09<\/td>\n<td>34.6%<\/td>\n<td>51.9%<\/td>\n<td>86.5%<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p style=\"font-size:13px;color:#777;margin:0.5em 0 0\">\u8868\u306e\u51fa\u5178: <a target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/www.ipa.go.jp\/security\/reports\/sme\/nl10bi000000fbvc-att\/sme-chousa-report2024r1.pdf\">\u60c5\u5831\u51e6\u7406\u63a8\u9032\u6a5f\u69cb\u300c2024\u5e74\u5ea6 \u4e2d\u5c0f\u4f01\u696d\u306b\u304a\u3051\u308b\u60c5\u5831\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u5bfe\u7b56\u306b\u95a2\u3059\u308b\u5b9f\u614b\u8abf\u67fb\u300d<\/a>\uff082024\u5e74\u8abf\u67fb\u30fb\u56f33-121\uff09<\/p>\n<p><img decoding=\"async\" alt=\"\u4f01\u696d\u898f\u6a21\u5225\u306e\u60c5\u5831\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u5bfe\u7b56\u4f53\u5236\uff082024\u5e74\u8abf\u67fb\uff09\" src=\"https:\/\/venu-sys.co.jp\/jo-sys\/wp-content\/uploads\/sites\/2\/2026\/08\/chart-3-org-structure.png\" \/><\/p>\n<p>\u3053\u3053\u304b\u3089\u8aad\u307f\u53d6\u308c\u308b\u306e\u306f\u3001\u300c\u3072\u3068\u308a\u60c5\u30b7\u30b9\u300d\u3068\u547c\u3070\u308c\u308b\u72b6\u614b\u3001\u3064\u307e\u308a\u517c\u52d9\u3067\u3082\u62c5\u5f53\u8005\u304c\u4efb\u547d\u3055\u308c\u3066\u3044\u308b\u72b6\u614b\u304c\u3001\u5c0f\u898f\u6a21\u5c64\u3067\u306f\u3080\u3057\u308d\u5c11\u6570\u6d3e\u3060\u3068\u3044\u3046\u70b9\u3067\u3059\u3002<mark>\u5c0f\u898f\u6a21\u4f01\u696d\u8005\u3067\u62c5\u5f53\u8005\u304c\u3044\u308b\u306e\u306f15.5%<\/mark>\u3067\u3001101\u540d\u4ee5\u4e0a\u306e86.5%\u3068\u306f71.0\u30dd\u30a4\u30f3\u30c8\u306e\u5dee\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<p><strong>\u517c\u52d9\u3067\u3082\u62c5\u5f53\u8005\u304c\u3044\u308b\u306a\u3089\u3001\u5bfe\u7b56\u3092\u7d99\u7d9a\u3057\u3066\u904b\u7528\u3059\u308b\u524d\u63d0\u6761\u4ef6\u306f\u6e80\u305f\u3057\u3066\u3044\u307e\u3059<\/strong>\u3002\u904b\u7528\u306e\u62c5\u3044\u624b\u304c\u3044\u306a\u3044\u4f01\u696d\u3092\u524d\u63d0\u306b\u3057\u305f\u5bfe\u7b56\u8a2d\u8a08\u304c\u3001\u307e\u305a\u5fc5\u8981\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<div style=\"border:2px solid #eb6834;border-radius:8px;background:#fdf3ee;padding:14px 18px;margin:1.5em 0\">\n<p style=\"margin:0 0 8px;font-weight:700;color:#c2521f\">\u6ce8\u610f<\/p>\n<p style=\"margin:0\">\u3053\u306e\u8abf\u67fb\u306fWeb\u30a2\u30f3\u30b1\u30fc\u30c8\u30e2\u30cb\u30bf\u8abf\u67fb\u3067\u3042\u308a\u3001\u56de\u7b54\u8005\u306f\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u3078\u306e\u95a2\u5fc3\u304c\u9ad8\u3044\u5c64\u306b\u504f\u3063\u3066\u3044\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002\u5916\u90e8\u306eIT\u30d9\u30f3\u30c0\u30fc\u3084\u9867\u554f\u306b\u59d4\u8a17\u3057\u3066\u3044\u308b\u30b1\u30fc\u30b9\u304c\u300c\u7d44\u7e54\u7684\u306b\u306f\u884c\u3063\u3066\u3044\u306a\u3044\u300d\u306b\u542b\u307e\u308c\u3066\u3044\u308c\u3070\u3001\u5b9f\u969b\u306e\u5bfe\u7b56\u6c34\u6e96\u306f\u3053\u306e\u6570\u5024\u3088\u308a\u9ad8\u304f\u306a\u308a\u307e\u3059\u3002\u307e\u305f101\u540d\u4ee5\u4e0a\u306fn=295\u3068\u5c0f\u3055\u304f\u3001\u6570\u30dd\u30a4\u30f3\u30c8\u306e\u5dee\u306f\u8aa4\u5dee\u306e\u7bc4\u56f2\u306b\u5165\u308a\u307e\u3059\u3002<\/p>\n<\/div>\n<h3>\u5bfe\u7b56\u6295\u8cc7\u306b\u3064\u3044\u3066\u300c\u6295\u8cc7\u3057\u3066\u3044\u306a\u3044\u300d\u300c\u308f\u304b\u3089\u306a\u3044\u300d\u3068\u7b54\u3048\u305f\u4f01\u696d\u304c\u7d047\u5272<\/h3>\n<p>\u4f53\u5236\u3060\u3051\u3067\u306a\u304f\u3001\u4e88\u7b97\u306e\u9762\u3067\u3082\u540c\u3058\u50be\u5411\u304c\u51fa\u3066\u3044\u307e\u3059\u30022024\u5e74\u306eIPA\u8abf\u67fb\u3067\u306f\u3001\u76f4\u8fd1\u904e\u53bb3\u671f\u306e\u60c5\u5831\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u5bfe\u7b56\u6295\u8cc7\u984d\u306b\u3064\u3044\u3066\u300c\u6295\u8cc7\u3057\u3066\u3044\u306a\u3044\u300d\u307e\u305f\u306f\u300c\u308f\u304b\u3089\u306a\u3044\u300d\u3068\u56de\u7b54\u3057\u305f\u4f01\u696d\u304c\u7d047\u5272\u3067\u3057\u305f\u3002<\/p>\n<p>\u7d44\u7e54\u7684\u306a\u5bfe\u5fdc\u306e\u6709\u7121\u3082\u3001\u898f\u6a21\u3067\u5927\u304d\u304f\u5909\u308f\u308a\u307e\u3059\u3002\u300c\u7d44\u7e54\u7684\u306b\u306f\u884c\u3063\u3066\u3044\u306a\u3044\uff08\u5404\u81ea\u306e\u5bfe\u5fdc\uff09\u300d\u3068\u7b54\u3048\u305f\u5272\u5408\u306f\u3001\u4e2d\u5c0f\u4f01\u696d100\u540d\u4ee5\u4e0b\u306747.6%\u3001101\u540d\u4ee5\u4e0a\u306713.6%\u3067\u3059\u3002<strong>\u62c5\u5f53\u8005\u3092\u7f6e\u3044\u3066\u3044\u308b\u4f01\u696d\u304c\u591a\u6570\u6d3e\u306b\u8ee2\u3058\u308b\u306e\u306f\u3001\u4e2d\u5c0f\u4f01\u696d100\u540d\u4ee5\u4e0b\u306e\u5c64\u304b\u3089\u3067\u3059<\/strong>\u3002<\/p>\n<p>\u3064\u307e\u308a\u3001\u6709\u511f\u88fd\u54c1\u306e\u5c0e\u5165\u3092\u524d\u63d0\u306b\u3057\u305f\u5bfe\u7b56\u63d0\u6848\u306f\u3001\u591a\u304f\u306e\u4f01\u696d\u3067\u305d\u3082\u305d\u3082\u524d\u63d0\u3092\u6e80\u305f\u3057\u307e\u305b\u3093\u3002\u3053\u306e\u8a18\u4e8b\u306e\u5f8c\u534a\u3067\u306f\u3001\u8ffd\u52a0\u8cbb\u7528\u306a\u3057\u3067\u59cb\u3081\u3089\u308c\u308b\u624b\u6bb5\u304b\u3089\u9806\u306b\u4e26\u3079\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n<p style=\"font-size:13px;color:#777;margin:1em 0 0\">\u51fa\u5178: <a target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/www.ipa.go.jp\/security\/reports\/sme\/nl10bi000000fbvc-att\/sme-chousa-report2024r1.pdf\">\u60c5\u5831\u51e6\u7406\u63a8\u9032\u6a5f\u69cb\u300c2024\u5e74\u5ea6 \u4e2d\u5c0f\u4f01\u696d\u306b\u304a\u3051\u308b\u60c5\u5831\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u5bfe\u7b56\u306b\u95a2\u3059\u308b\u5b9f\u614b\u8abf\u67fb\u300d<\/a>\uff0f<a target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/www.ipa.go.jp\/security\/reports\/sme\/nl10bi000000fbx3-att\/sme-gaiyou-report2024r1.pdf\">\u540c \u8abf\u67fb\u5831\u544a\u66f8\uff08\u6982\u8981\u7248\uff09<\/a><\/p>\n<h2>JP\u30c9\u30e1\u30a4\u30f3\u306eSPF\u5c0e\u5165\u7387\u306f88.4%\u3001DMARC\u306f32.6%\uff082024\u5e749\u6708\u6642\u70b9\uff09<\/h2>\n<p><img decoding=\"async\" alt=\"\u8a8d\u8a3c\u6280\u8853\u306e\u666e\u53ca\u5ea6\" src=\"https:\/\/venu-sys.co.jp\/jo-sys\/wp-content\/uploads\/sites\/2\/2026\/08\/h2-3-24.png\" \/><\/p>\n<p>\u81ea\u793e\u306e\u7acb\u3061\u4f4d\u7f6e\u3092\u78ba\u304b\u3081\u308b\u3046\u3048\u3067\u3001\u9001\u4fe1\u30c9\u30e1\u30a4\u30f3\u8a8d\u8a3c\u306e\u666e\u53ca\u72b6\u6cc1\u306f\u5206\u304b\u308a\u3084\u3059\u3044\u6307\u6a19\u3067\u3059\u3002\u9001\u4fe1\u30c9\u30e1\u30a4\u30f3\u8a8d\u8a3c\u306f\u3001\u305d\u306e\u30e1\u30fc\u30eb\u304c\u672c\u5f53\u306b\u305d\u306e\u30c9\u30e1\u30a4\u30f3\u304b\u3089\u9001\u3089\u308c\u305f\u304b\u3092\u53d7\u4fe1\u5074\u304c\u78ba\u8a8d\u3059\u308b\u305f\u3081\u306e\u4ed5\u7d44\u307f\u3067\u3059\u3002<\/p>\n<p>\u4ee3\u8868\u7684\u306a\u3082\u306e\u304cSPF\u30fbDKIM\u30fbDMARC\u306e3\u3064\u3067\u3059\u3002SPF\u306f\u81ea\u30c9\u30e1\u30a4\u30f3\u306e\u30e1\u30fc\u30eb\u3092\u9001\u308b\u9001\u4fe1\u5143IP\u30a2\u30c9\u30ec\u30b9\u3092DNS\u3067\u5ba3\u8a00\u3059\u308b\u4ed5\u7d44\u307f\u3067\u3001DKIM\u306f\u96fb\u5b50\u7f72\u540d\u3067\u6539\u3056\u3093\u306e\u6709\u7121\u3092\u78ba\u304b\u3081\u308b\u4ed5\u7d44\u307f\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<p>DMARC\u306f\u3001SPF\u3084DKIM\u306e\u8a8d\u8a3c\u7d50\u679c\u304c\u672c\u6587\u306e\u5dee\u51fa\u4eba\uff08\u30d8\u30c3\u30c0From\uff09\u306e\u30c9\u30e1\u30a4\u30f3\u3068\u4e00\u81f4\u3057\u3066\u3044\u308b\u304b\u3092\u78ba\u304b\u3081\u305f\u3046\u3048\u3067\u3001\u81ea\u30c9\u30e1\u30a4\u30f3\u3092\u9a19\u308b\u30e1\u30fc\u30eb\u3092\u3069\u3046\u6271\u3046\u304b\uff08none \/ quarantine \/ reject\uff09\u3092\u9001\u4fe1\u5074\u304b\u3089\u53d7\u4fe1\u5074\u3078\u6307\u793a\u3059\u308b\u4ed5\u7d44\u307f\u3067\u3059\u3002<\/p>\n<p>\u7dcf\u52d9\u7701\u306e\u60c5\u5831\u901a\u4fe1\u767d\u66f8\u306b\u306f\u3001JP\u30c9\u30e1\u30a4\u30f3\u3067\u306e\u5c0e\u5165\u7387\u304c3\u6642\u70b9\u5206\u63b2\u8f09\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<table>\n<thead>\n<tr>\n<th>\u8abf\u67fb\u6642\u70b9<\/th>\n<th>SPF\u5c0e\u5165\u7387<\/th>\n<th>DMARC\u5c0e\u5165\u7387<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>2022\u5e7412\u6708\u6642\u70b9<\/td>\n<td>77.2%<\/td>\n<td>2.7%<\/td>\n<\/tr>\n<tr>\n<td>2023\u5e7412\u6708\u6642\u70b9<\/td>\n<td>82.9%<\/td>\n<td>10.2%<\/td>\n<\/tr>\n<tr>\n<td>2024\u5e749\u6708\u6642\u70b9<\/td>\n<td>88.4%<\/td>\n<td>32.6%<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p style=\"font-size:13px;color:#777;margin:0.5em 0 0\">\u8868\u306e\u51fa\u5178: <a target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/www.soumu.go.jp\/johotsusintokei\/whitepaper\/ja\/r05\/html\/nd24a240.html\">\u7dcf\u52d9\u7701\u300c\u4ee4\u548c5\u5e74\u7248 \u60c5\u5831\u901a\u4fe1\u767d\u66f8\u300d<\/a>\uff0f<a target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/www.soumu.go.jp\/johotsusintokei\/whitepaper\/ja\/r06\/html\/nd21a240.html\">\u540c\u300c\u4ee4\u548c6\u5e74\u7248 \u60c5\u5831\u901a\u4fe1\u767d\u66f8\u300d<\/a>\uff0f<a target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/www.soumu.go.jp\/johotsusintokei\/whitepaper\/ja\/r07\/html\/nd21a240.html\">\u540c\u300c\u4ee4\u548c7\u5e74\u7248 \u60c5\u5831\u901a\u4fe1\u767d\u66f8\u300d<\/a><\/p>\n<p><img decoding=\"async\" alt=\"JP\u30c9\u30e1\u30a4\u30f3\u306eSPF\u30fbDMARC\u5c0e\u5165\u7387\u306e\u63a8\u79fb\uff082022\u5e7412\u6708\u301c2024\u5e749\u6708\uff09\" src=\"https:\/\/venu-sys.co.jp\/jo-sys\/wp-content\/uploads\/sites\/2\/2026\/08\/chart-2-spf-dmarc-trend.png\" \/><\/p>\n<p>\u8aad\u307f\u53d6\u308b\u969b\u306e\u6ce8\u610f\u304c2\u3064\u3042\u308a\u307e\u3059\u30023\u6642\u70b9\u306e\u3046\u30612022\u5e74\u30682023\u5e74\u306f12\u6708\u6642\u70b9\u30012024\u5e74\u306e\u307f9\u6708\u6642\u70b9\u3067\u3001\u89b3\u6e2c\u306e\u9593\u9694\u304c\u305d\u308d\u3063\u3066\u3044\u307e\u305b\u3093\u3002\u307e\u305f\u6bcd\u96c6\u56e3\u306fJP\u30c9\u30e1\u30a4\u30f3\u5168\u4f53\u3067\u3001\u4f11\u7720\u30c9\u30e1\u30a4\u30f3\u3084\u500b\u4eba\u306e\u30c9\u30e1\u30a4\u30f3\u3082\u542b\u307e\u308c\u307e\u3059\u3002<\/p>\n<h3>SPF\u306f2022\u5e7412\u6708\u306e77.2%\u304b\u30892024\u5e749\u6708\u306e88.4%\u307e\u3067\u7740\u5b9f\u306b\u4f38\u3073\u3066\u3044\u308b<\/h3>\n<p>SPF\u306e\u666e\u53ca\u306f\u3001\u3059\u3067\u306b9\u5272\u8fd1\u304f\u307e\u3067\u9032\u3093\u3067\u3044\u307e\u3059\u3002\u7dcf\u52d9\u7701\u306e\u8abf\u67fb\u306b\u3088\u308b\u3068\u3001JP\u30c9\u30e1\u30a4\u30f3\u3067\u306eSPF\u5c0e\u5165\u7387\u306f2022\u5e7412\u6708\u6642\u70b9\u306777.2%\u3067\u3057\u305f\u3002\u305d\u306e\u5f8c\u30012023\u5e7412\u6708\u6642\u70b9\u306782.9%\u30012024\u5e749\u6708\u6642\u70b9\u306788.4%\u307e\u3067\u4e0a\u304c\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n<p><strong>3\u6642\u70b9\u3092\u901a\u3058\u3066\u7740\u5b9f\u306b\u4e0a\u304c\u308a\u7d9a\u3051\u3066\u3044\u308b<\/strong>\u70b9\u304c\u7279\u5fb4\u3067\u3059\u3002\u80cc\u666f\u3068\u3057\u3066\u3001SPF\u306fDNS\u306bTXT\u30ec\u30b3\u30fc\u30c9\u30921\u884c\u52a0\u3048\u308b\u5f62\u3067\u8a2d\u5b9a\u3067\u304d\u3001\u65e5\u3005\u306e\u904b\u7528\u3092\u4f34\u308f\u306a\u3044\u3053\u3068\u304c\u6319\u3052\u3089\u308c\u307e\u3059\u3002\u305f\u3060\u3057\u3053\u306e\u89e3\u91c8\u306f\u6280\u8853\u306e\u4ed5\u69d8\u306b\u57fa\u3065\u304f\u3082\u306e\u3067\u3001\u666e\u53ca\u306e\u8981\u56e0\u3092\u6e2c\u3063\u305f\u6570\u5024\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n<p>\u81ea\u793e\u30c9\u30e1\u30a4\u30f3\u3067SPF\u304c\u8a2d\u5b9a\u3055\u308c\u3066\u3044\u308b\u304b\u3069\u3046\u304b\u306f\u3001DNS\u306eTXT\u30ec\u30b3\u30fc\u30c9\u3092\u78ba\u8a8d\u3059\u308c\u3070\u5206\u304b\u308a\u307e\u3059\u3002\u30c9\u30e1\u30a4\u30f3\u306e\u7ba1\u7406\u3092\u5916\u90e8\u306b\u59d4\u8a17\u3057\u3066\u3044\u308b\u5834\u5408\u306f\u3001\u59d4\u8a17\u5148\u306b\u8a2d\u5b9a\u72b6\u6cc1\u3092\u554f\u3044\u5408\u308f\u305b\u3066\u307f\u3066\u304f\u3060\u3055\u3044\u3002\u3053\u3053\u304c\u3001\u9001\u4fe1\u5074\u306e\u5bfe\u7b56\u306e\u51fa\u767a\u70b9\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<h3>DMARC\u306f2.7%\u304b\u308932.6%\u307812\u500d\u306b\u306a\u3063\u305f\u304c\u3001SPF\u3068\u306e\u5dee\u306f55.8\u30dd\u30a4\u30f3\u30c8\u6b8b\u3063\u3066\u3044\u308b<\/h3>\n<p>DMARC\u306f\u4f38\u3073\u7387\u3053\u305d\u5927\u304d\u3044\u3082\u306e\u306e\u3001\u5230\u9054\u70b9\u306f\u307e\u30603\u5206\u306e1\u5f31\u3067\u3059\u3002\u7dcf\u52d9\u7701\u306e\u8abf\u67fb\u3067\u306f\u3001JP\u30c9\u30e1\u30a4\u30f3\u306eDMARC\u5c0e\u5165\u7387\u306f2022\u5e7412\u6708\u6642\u70b9\u30672.7%\u3067\u3057\u305f\u3002\u3053\u308c\u304c2023\u5e7412\u6708\u6642\u70b9\u306710.2%\u30012024\u5e749\u6708\u6642\u70b9\u306732.6%\u307e\u3067\u4f38\u3073\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u4e00\u65b9\u3001\u540c\u30582024\u5e749\u6708\u6642\u70b9\u306eSPF\u306f88.4%\u3067\u3059\u3002\u4f38\u3073\u7387\u306e\u5927\u304d\u3055\u306b\u5bfe\u3057\u3066\u3001\u6c34\u6e96\u305d\u306e\u3082\u306e\u306b\u306f\u307e\u3060\u958b\u304d\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<p>\u3053\u306e\u5dee\u304b\u3089\u8aad\u307f\u53d6\u308c\u308b\u306e\u306f\u30012\u3064\u306e\u6280\u8853\u306b\u6c42\u3081\u3089\u308c\u308b\u4f5c\u696d\u91cf\u306e\u9055\u3044\u3067\u3059\u3002SPF\u306f\u9001\u4fe1\u5143\u3092\u5ba3\u8a00\u3059\u308b\u3060\u3051\u3067\u3001\u305d\u306e\u30e1\u30fc\u30eb\u3092\u3069\u3046\u6271\u3046\u304b\u306e\u5224\u65ad\u306f\u53d7\u4fe1\u5074\u306b\u59d4\u306d\u3089\u308c\u307e\u3059\u3002<\/p>\n<p>\u5bfe\u3057\u3066DMARC\u306f\u3001\u81ea\u30c9\u30e1\u30a4\u30f3\u3092\u9a19\u308b\u30e1\u30fc\u30eb\u306e\u6271\u3044\u3092\u9001\u4fe1\u5074\u304c\u6307\u793a\u3059\u308b\u4ed5\u7d44\u307f\u3067\u3059\u3002\u30dd\u30ea\u30b7\u30fc\u3092\u3069\u3053\u307e\u3067\u5f37\u304f\u3059\u308b\u304b\u306e\u5224\u65ad\u306b\u52a0\u3048\u3001\u6b63\u898f\u306e\u30e1\u30fc\u30eb\u304c\u6b62\u307e\u3089\u306a\u3044\u304b\u3092\u4e8b\u524d\u306b\u78ba\u304b\u3081\u308b\u4f5c\u696d\u304c\u4f34\u3044\u307e\u3059\u3002\u3053\u306e\u8ca0\u62c5\u306e\u5dee\u304c\u3001<mark>55.8\u30dd\u30a4\u30f3\u30c8<\/mark>\u306e\u666e\u53ca\u5dee\u3068\u3057\u3066\u8868\u308c\u3066\u3044\u308b\u3068\u89e3\u91c8\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>\u88cf\u8fd4\u3059\u3068\u3001<strong>2024\u5e749\u6708\u6642\u70b9\u3067.jp\u30c9\u30e1\u30a4\u30f3\u306e3\u5206\u306e2\u306f\u3001\u81ea\u793e\u3092\u9a19\u308b\u30e1\u30fc\u30eb\u304c\u53d6\u5f15\u5148\u306b\u5c4a\u3044\u3066\u3082\u3001\u53d7\u4fe1\u5074\u306b\u6392\u9664\u3055\u305b\u308b\u6307\u793a\u3092\u51fa\u305b\u3066\u3044\u306a\u3044<\/strong>\u72b6\u614b\u3067\u3059\u3002<\/p>\n<div style=\"border:2px solid #eb6834;border-radius:8px;background:#fdf3ee;padding:14px 18px;margin:1.5em 0\">\n<p style=\"margin:0 0 8px;font-weight:700;color:#c2521f\">\u6ce8\u610f<\/p>\n<p style=\"margin:0\">\u89b3\u6e2c\u6642\u70b9\u306e\u9593\u9694\u304c\u305d\u308d\u3063\u3066\u304a\u3089\u305a\u3001\u6bcd\u96c6\u56e3\u306b\u306f\u4f11\u7720\u30c9\u30e1\u30a4\u30f3\u3084\u500b\u4eba\u30c9\u30e1\u30a4\u30f3\u3082\u542b\u307e\u308c\u307e\u3059\u3002\u4e8b\u696d\u3067\u30e1\u30fc\u30eb\u3092\u65e5\u5e38\u7684\u306b\u9001\u308b\u4f01\u696d\u30c9\u30e1\u30a4\u30f3\u306b\u7d5e\u308c\u3070\u3001\u5c0e\u5165\u7387\u306f\u3053\u308c\u3088\u308a\u9ad8\u3044\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002\u307e\u305fDMARC\u306e\u6025\u306a\u4f38\u3073\u306b\u306f\u3001\u5916\u90e8\u8981\u56e0\u304c\u5bc4\u4e0e\u3057\u305f\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002\u5927\u624b\u30e1\u30fc\u30eb\u30d7\u30ed\u30d0\u30a4\u30c0\u304c\u5927\u91cf\u9001\u4fe1\u8005\u306b\u8a8d\u8a3c\u8a2d\u5b9a\u3092\u6c42\u3081\u308b\u3088\u3046\u306b\u306a\u3063\u305f\u305f\u3081\u3067\u3059\u3002\u305f\u3060\u3057\u3001\u3053\u308c\u3092\u88cf\u3065\u3051\u308b\u6570\u5024\u306f\u672c\u8a18\u4e8b\u3067\u306f\u78ba\u8a8d\u3067\u304d\u3066\u3044\u307e\u305b\u3093\u3002SPF\u3068DMARC\u306f\u6392\u4ed6\u7684\u306a\u6280\u8853\u3067\u306f\u306a\u304f\u4f75\u7528\u3059\u308b\u3082\u306e\u3067\u3059\u3002\u4e21\u8005\u306e\u5dee\u3092\u305d\u306e\u307e\u307e\u300c\u9045\u308c\u300d\u3068\u8a55\u4fa1\u3059\u308b\u3053\u3068\u306f\u3067\u304d\u307e\u305b\u3093\u3002<\/p>\n<\/div>\n<p style=\"font-size:13px;color:#777;margin:1em 0 0\">\u51fa\u5178: <a target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/www.soumu.go.jp\/johotsusintokei\/whitepaper\/ja\/r05\/html\/nd24a240.html\">\u7dcf\u52d9\u7701\u300c\u4ee4\u548c5\u5e74\u7248 \u60c5\u5831\u901a\u4fe1\u767d\u66f8\u300d<\/a>\uff0f<a target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/www.soumu.go.jp\/johotsusintokei\/whitepaper\/ja\/r06\/html\/nd21a240.html\">\u540c\u300c\u4ee4\u548c6\u5e74\u7248 \u60c5\u5831\u901a\u4fe1\u767d\u66f8\u300d<\/a>\uff0f<a target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/www.soumu.go.jp\/johotsusintokei\/whitepaper\/ja\/r07\/html\/nd21a240.html\">\u540c\u300c\u4ee4\u548c7\u5e74\u7248 \u60c5\u5831\u901a\u4fe1\u767d\u66f8\u300d<\/a><\/p>\n<h2>\u9001\u4fe1\u30c9\u30e1\u30a4\u30f3\u8a8d\u8a3c\u3067\u9632\u3052\u308b\u306e\u306f\u81ea\u793e\u30c9\u30e1\u30a4\u30f3\u306e\u306a\u308a\u3059\u307e\u3057\u306b\u9650\u3089\u308c\u308b<\/h2>\n<p><img decoding=\"async\" alt=\"\u8a8d\u8a3c\u304c\u5c4a\u304b\u306a\u3044\u7bc4\u56f2\" src=\"https:\/\/venu-sys.co.jp\/jo-sys\/wp-content\/uploads\/sites\/2\/2026\/08\/h2-4-24.png\" \/><\/p>\n<p>\u9001\u4fe1\u30c9\u30e1\u30a4\u30f3\u8a8d\u8a3c\u3092\u5165\u308c\u3066\u3082\u3001\u5c4a\u304f\u30d5\u30a3\u30c3\u30b7\u30f3\u30b0\u30e1\u30fc\u30eb\u304c\u6e1b\u308b\u308f\u3051\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u3053\u306e\u70b9\u3092\u5148\u306b\u62bc\u3055\u3048\u3066\u304a\u304f\u3068\u3001\u5bfe\u7b56\u306e\u512a\u5148\u9806\u4f4d\u3092\u7d44\u307f\u7acb\u3066\u3084\u3059\u304f\u306a\u308a\u307e\u3059\u3002<\/p>\n<p>\u307e\u305a\u6570\u5024\u3092\u4e26\u3079\u307e\u3059\u3002JP\u30c9\u30e1\u30a4\u30f3\u306eSPF\u5c0e\u5165\u7387\u306f\u30012022\u5e7412\u6708\u6642\u70b9\u306777.2%\u30012023\u5e7412\u6708\u6642\u70b9\u306782.9%\u3067\u3057\u305f\u30022024\u5e749\u6708\u6642\u70b9\u3067\u306f88.4%\u3067\u3001\u4e0a\u6607\u5e45\u306f11.2\u30dd\u30a4\u30f3\u30c8\u3067\u3059\u3002<\/p>\n<p>\u305d\u306e\u5f8c\u534a\u3068\u91cd\u306a\u308b\u671f\u9593\u306e\u30d5\u30a3\u30c3\u30b7\u30f3\u30b0\u30b5\u30a4\u30c8\u5831\u544a\u4ef6\u6570\u3092\u898b\u3066\u307f\u307e\u3057\u3087\u3046\u30024,473\u4ef6\u30014,781\u4ef6\u30015,025\u4ef6\u3068\u7d9a\u304d\u307e\u3059\u3002\u3055\u3089\u306b4,233\u4ef6\u30014,780\u4ef6\u30015,267\u4ef6\u3067\u3001\u6e1b\u5c11\u5c40\u9762\u306f\u4e00\u5ea6\u3082\u73fe\u308c\u3066\u3044\u307e\u305b\u3093\u3002<\/p>\n<p>\u3053\u3053\u304b\u3089\u8aad\u307f\u53d6\u308c\u308b\u306e\u306f\u3001\u56e0\u679c\u95a2\u4fc2\u3067\u306f\u306a\u304f\u5b88\u5099\u7bc4\u56f2\u306e\u305a\u308c\u3067\u3059\u3002SPF\u3084DMARC\u306f\u300c\u81ea\u793e\u30c9\u30e1\u30a4\u30f3\u3092\u9a19\u308b\u30e1\u30fc\u30eb\u3092\u53d7\u4fe1\u5074\u306b\u5f3e\u304b\u305b\u308b\u300d\u305f\u3081\u306e\u6280\u8853\u3067\u3059\u3002\u653b\u6483\u8005\u304c\u65b0\u898f\u306b\u53d6\u5f97\u3057\u305f\u7121\u95a2\u4fc2\u306e\u30c9\u30e1\u30a4\u30f3\u304b\u3089\u9001\u3089\u308c\u308b\u30e1\u30fc\u30eb\u306b\u306f\u52b9\u304d\u307e\u305b\u3093\u3002<\/p>\n<p>\u5b9f\u969b\u3001\u6b63\u898f\u30c9\u30e1\u30a4\u30f3\u306b\u4f3c\u305f\u30c9\u30e1\u30a4\u30f3\u3092\u53d6\u5f97\u3057\u3001\u8a50\u79f0\u3057\u305f\u7d44\u7e54\u306e\u53d6\u5f15\u5148\u3060\u3051\u306b\u9001\u308b\u624b\u53e3\u304c\u78ba\u8a8d\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u672c\u6587\u306b\u5b9f\u5728\u3059\u308b\u793e\u54e1\u306e\u7f72\u540d\u3092\u542b\u3081\u308b\u4f8b\u3082\u3042\u308a\u3001\u30c9\u30e1\u30a4\u30f3\u306e\u898b\u305f\u76ee\u3060\u3051\u3067\u306f\u5224\u5225\u304c\u96e3\u3057\u304f\u306a\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n<p><strong>\u9001\u4fe1\u30c9\u30e1\u30a4\u30f3\u8a8d\u8a3c\u306f\u5fc5\u8981\u306a\u5bfe\u7b56\u3067\u3059\u304c\u3001\u305d\u308c\u3060\u3051\u3067\u53d7\u4fe1\u3059\u308b\u30e1\u30fc\u30eb\u306e\u5b89\u5168\u6027\u306f\u62c5\u4fdd\u3055\u308c\u307e\u305b\u3093<\/strong>\u3002\u53d7\u4fe1\u5074\u306e\u30d5\u30a3\u30eb\u30bf\u3068\u3001\u5229\u7528\u8005\u5074\u306e\u904b\u7528\u30eb\u30fc\u30eb\u306f\u5225\u7acb\u3066\u3067\u7528\u610f\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<div style=\"border:2px solid #eb6834;border-radius:8px;background:#fdf3ee;padding:14px 18px;margin:1.5em 0\">\n<p style=\"margin:0 0 8px;font-weight:700;color:#c2521f\">\u6ce8\u610f<\/p>\n<p style=\"margin:0\">2\u3064\u306e\u6307\u6a19\u306f\u8abf\u67fb\u4e3b\u4f53\u3082\u6bcd\u96c6\u56e3\u3082\u7570\u306a\u308a\u3001\u89b3\u6e2c\u671f\u9593\u304c\u91cd\u306a\u308b\u306e\u306f3\u56db\u534a\u671f\u5206\u3060\u3051\u3067\u3059\u3002JPCERT\/CC\u306e\u4ef6\u6570\u306f\u4efb\u610f\u306e\u5c4a\u51fa\u306e\u96c6\u8a08\u3067\u3001\u5897\u6e1b\u304c\u5c4a\u51fa\u306e\u7fd2\u6163\u3084\u5468\u77e5\u5ea6\u306e\u5909\u5316\u3092\u53cd\u6620\u3057\u3066\u3044\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002SPF\u5c0e\u5165\u7387\u306f.jp\u30c9\u30e1\u30a4\u30f3\u306b\u3064\u3044\u3066\u306e\u6570\u5024\u3067\u3059\u304c\u3001\u65e5\u672c\u306e\u5229\u7528\u8005\u306b\u5c4a\u304f\u30d5\u30a3\u30c3\u30b7\u30f3\u30b0\u30e1\u30fc\u30eb\u306e\u9001\u4fe1\u5143\u306f.jp\u306b\u9650\u308a\u307e\u305b\u3093\u3002\u9001\u4fe1\u30c9\u30e1\u30a4\u30f3\u8a8d\u8a3c\u304c\u306a\u3051\u308c\u3070\u4ef6\u6570\u306f\u3055\u3089\u306b\u5897\u3048\u3066\u3044\u305f\u53ef\u80fd\u6027\u3082\u3042\u308a\u3001\u300c\u52b9\u679c\u304c\u306a\u3044\u300d\u3053\u3068\u306e\u8a3c\u660e\u306b\u306f\u306a\u308a\u307e\u305b\u3093\u30022\u3064\u306e\u7cfb\u5217\u30921\u3064\u306e\u30b0\u30e9\u30d5\u306b\u91cd\u306d\u3066\u8aad\u3080\u3053\u3068\u306f\u907f\u3051\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<\/div>\n<p style=\"font-size:13px;color:#777;margin:1em 0 0\">\u51fa\u5178: <a target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/www.soumu.go.jp\/johotsusintokei\/whitepaper\/ja\/r05\/html\/nd24a240.html\">\u7dcf\u52d9\u7701\u300c\u4ee4\u548c5\u5e74\u7248 \u60c5\u5831\u901a\u4fe1\u767d\u66f8\u300d<\/a>\uff0f<a target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/www.soumu.go.jp\/johotsusintokei\/whitepaper\/ja\/r06\/html\/nd21a240.html\">\u540c\u300c\u4ee4\u548c6\u5e74\u7248 \u60c5\u5831\u901a\u4fe1\u767d\u66f8\u300d<\/a>\uff0f<a target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/www.soumu.go.jp\/johotsusintokei\/whitepaper\/ja\/r07\/html\/nd21a240.html\">\u540c\u300c\u4ee4\u548c7\u5e74\u7248 \u60c5\u5831\u901a\u4fe1\u767d\u66f8\u300d<\/a>\uff0f<a target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/www.jpcert.or.jp\/pr\/2025\/IR_Report2024Q4.pdf\">JPCERT\/CC\u300c\u30a4\u30f3\u30b7\u30c7\u30f3\u30c8\u5831\u544a\u5bfe\u5fdc\u30ec\u30dd\u30fc\u30c8\u300d\u5404\u56db\u534a\u671f\u53f7<\/a><\/p>\n<h2>\u30e1\u30fc\u30eb\u5bfe\u7b56\u306f\u53d7\u4fe1\u5074\u30fb\u9001\u4fe1\u5074\u30fb\u904b\u7528\u30eb\u30fc\u30eb\u306e3\u5c64\u306b\u5206\u3051\u3066\u512a\u5148\u9806\u4f4d\u3092\u4ed8\u3051\u308b<\/h2>\n<p><img decoding=\"async\" alt=\"\u5bfe\u7b56\u306e\u512a\u5148\u9806\u4f4d\" src=\"https:\/\/venu-sys.co.jp\/jo-sys\/wp-content\/uploads\/sites\/2\/2026\/08\/h2-5-24.png\" \/><\/p>\n<p>\u3053\u3053\u304b\u3089\u306f\u5bfe\u7b56\u306e\u8a71\u306b\u79fb\u308a\u307e\u3059\u3002\u3053\u306e\u8a18\u4e8b\u3067\u306f\u7db2\u7f85\u7684\u306a\u5bfe\u7b56\u30ea\u30b9\u30c8\u306f\u4f5c\u3089\u305a\u3001<strong>\u62c5\u5f53\u8005\u304c\u3044\u306a\u3044\u524d\u63d0\u3067\u3082\u56de\u308b\u9806\u306b\u4e26\u3079\u307e\u3059<\/strong>\u3002\u7d44\u7e54\u7684\u306a\u5bfe\u7b56\u3092\u884c\u3063\u3066\u3044\u306a\u3044\u4f01\u696d\u304c2024\u5e74\u8abf\u67fb\u306769.7%\u3092\u5360\u3081\u308b\u4ee5\u4e0a\u3001\u904b\u7528\u306e\u624b\u9593\u304c\u5c11\u306a\u3044\u624b\u6bb5\u304b\u3089\u7740\u624b\u3059\u308b\u306e\u304c\u73fe\u5b9f\u7684\u3060\u304b\u3089\u3067\u3059\u3002<\/p>\n<p>\u5bfe\u7b56\u306f\u3001\u53d7\u4fe1\u5074\u30fb\u9001\u4fe1\u5074\u30fb\u904b\u7528\u30eb\u30fc\u30eb\u306e3\u5c64\u306b\u5206\u3051\u3066\u8003\u3048\u308b\u3068\u6574\u7406\u3057\u3084\u3059\u304f\u306a\u308a\u307e\u3059\u3002\u9001\u4fe1\u5074\u306b\u3064\u3044\u3066\u306f\u30012024\u5e749\u6708\u6642\u70b9\u3067SPF\u304c88.4%\u3001DMARC\u304c32.6%\u3068\u3044\u3046\u666e\u53ca\u72b6\u6cc1\u304c\u3001\u81ea\u793e\u306e\u4f4d\u7f6e\u3092\u6e2c\u308b\u76ee\u5b89\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<p>\u306a\u304a\u3001\u3053\u3053\u3067\u7d39\u4ecb\u3059\u308b\u306e\u306f\u7279\u5b9a\u306e\u88fd\u54c1\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u30e1\u30fc\u30eb\u30b5\u30fc\u30d3\u30b9\u306e\u6a19\u6e96\u6a5f\u80fd\u30fbDNS\u306e\u8a2d\u5b9a\u30fb\u793e\u5185\u30eb\u30fc\u30eb\u3068\u3044\u3046\u7c92\u5ea6\u3067\u6271\u3044\u307e\u3059\u3002\u4ed6\u306e<a href=\"https:\/\/venu-sys.co.jp\/jo-sys\/8781\/\">\u30b5\u30a4\u30d0\u30fc\u653b\u6483\u306e\u7a2e\u985e<\/a>\u3078\u306e\u5bfe\u7b56\u3068\u91cd\u306a\u308b\u90e8\u5206\u3082\u591a\u3044\u306e\u3067\u3001\u3042\u308f\u305b\u3066\u78ba\u8a8d\u3057\u3066\u307f\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<div style=\"border:2px solid #2d4f8f;border-radius:8px;background:#f2f5fb;padding:14px 18px;margin:1.5em 0\">\n<p style=\"margin:0 0 8px;font-weight:700;color:#2d4f8f\">\u7740\u624b\u3059\u308b\u9806\u756a<\/p>\n<ul style=\"margin:0;padding-left:20px\">\n<li><strong>1. \u53d7\u4fe1\u5074<\/strong>: \u8ff7\u60d1\u30e1\u30fc\u30eb\u30d5\u30a3\u30eb\u30bf\u3068\u591a\u8981\u7d20\u8a8d\u8a3c\u306a\u3069\u3001\u8a2d\u5b9a\u3059\u308b\u3060\u3051\u3067\u52b9\u304f\u624b\u6bb5<\/li>\n<li><strong>2. \u9001\u4fe1\u5074<\/strong>: \u81ea\u793e\u30c9\u30e1\u30a4\u30f3\u306eSPF\u30fbDKIM\u306e\u78ba\u8a8d\u3068\u3001DMARC\u306e\u6bb5\u968e\u7684\u306a\u5c0e\u5165<\/li>\n<li><strong>3. \u904b\u7528\u30eb\u30fc\u30eb<\/strong>: \u632f\u8fbc\u5148\u306e\u5909\u66f4\u4f9d\u983c\u3092\u30e1\u30fc\u30eb\u4ee5\u5916\u306e\u624b\u6bb5\u3067\u78ba\u8a8d\u3059\u308b\u53d6\u308a\u6c7a\u3081<\/li>\n<\/ul>\n<\/div>\n<h3>\u53d7\u4fe1\u5074\u306f\u8ff7\u60d1\u30e1\u30fc\u30eb\u30d5\u30a3\u30eb\u30bf\u3068\u591a\u8981\u7d20\u8a8d\u8a3c\u306a\u3069\u3001\u8a2d\u5b9a\u3059\u308b\u3060\u3051\u3067\u52b9\u304f\u624b\u6bb5\u304b\u3089\u5165\u308b<\/h3>\n<p>\u6700\u521d\u306b\u624b\u3092\u4ed8\u3051\u308b\u306e\u306f\u53d7\u4fe1\u5074\u3067\u3059\u3002\u7406\u7531\u306f\u3001\u65e5\u3005\u306e\u904b\u7528\u3092\u5fc5\u8981\u3068\u3057\u306a\u3044\u65e2\u5b9a\u306e\u8a2d\u5b9a\u3067\u52b9\u679c\u304c\u51fa\u308b\u304b\u3089\u3067\u3059\u3002\u5c0f\u898f\u6a21\u4f01\u696d\u8005\u3067\u62c5\u5f53\u8005\u304c\u3044\u308b\u306e\u306f\u5c02\u9580\u90e8\u7f724.4%\u3068\u517c\u52d911.1%\u306e\u5408\u8a0815.5%\u306b\u3068\u3069\u307e\u308a\u3001\u7d99\u7d9a\u904b\u7528\u3092\u524d\u63d0\u306b\u3057\u305f\u624b\u6bb5\u306f\u9078\u3073\u306b\u304f\u3044\u305f\u3081\u3067\u3059\u3002<\/p>\n<p>IPA\u304c\u500b\u4eba\u5411\u3051\u306e\u30d5\u30a3\u30c3\u30b7\u30f3\u30b0\u5bfe\u7b56\u3068\u3057\u3066\u6319\u3052\u3066\u3044\u308b\u9805\u76ee\u3092\u3001\u793e\u5185\u3067\u5171\u6709\u3067\u304d\u308b\u5f62\u306b\u6574\u7406\u3059\u308b\u3068\u6b21\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<ul>\n<li>\u8eab\u306b\u899a\u3048\u306e\u306a\u3044\u30e1\u30fc\u30eb\u3084SMS\u306f\u3001\u958b\u304b\u305a\u306b\u524a\u9664\u3059\u308b<\/li>\n<li>\u6dfb\u4ed8\u30d5\u30a1\u30a4\u30eb\u30fbURL\u30fbQR\u30b3\u30fc\u30c9\u3092\u5b89\u6613\u306b\u958b\u304b\u306a\u3044<\/li>\n<li>\u3088\u304f\u4f7f\u3046\u30b5\u30a4\u30c8\u306f\u3001\u30e1\u30fc\u30eb\u5185\u306e\u30ea\u30f3\u30af\u3067\u306f\u306a\u304f\u30d6\u30c3\u30af\u30de\u30fc\u30af\u304b\u3089\u30a2\u30af\u30bb\u30b9\u3059\u308b<\/li>\n<li>\u30e1\u30fc\u30eb\u30b5\u30fc\u30d3\u30b9\u306e\u8ff7\u60d1\u30e1\u30fc\u30eb\u30d5\u30a3\u30eb\u30bf\u3092\u6709\u52b9\u306b\u3059\u308b<\/li>\n<li>\u696d\u52d9\u3067\u4f7f\u3046\u30b5\u30fc\u30d3\u30b9\u306b\u591a\u8981\u7d20\u8a8d\u8a3c\u3092\u8a2d\u5b9a\u3059\u308b\uff08\u53ef\u80fd\u306a\u3089\u30d1\u30b9\u30ad\u30fc\u306a\u3069\u3001\u30d5\u30a3\u30c3\u30b7\u30f3\u30b0\u306b\u8010\u6027\u306e\u3042\u308b\u65b9\u5f0f\u3092\u9078\u3076\uff09<\/li>\n<\/ul>\n<p>\u3053\u306e\u5c64\u3092\u6700\u512a\u5148\u306b\u3059\u308b\u6839\u62e0\u306f\u3001\u30d5\u30a3\u30c3\u30b7\u30f3\u30b0\u306e\u7d99\u7d9a\u6027\u306b\u3042\u308a\u307e\u3059\u30022026\u5e74\u7248\u306e10\u5927\u8105\u5a01\uff08\u500b\u4eba\uff09\u3067\u3001\u30d5\u30a3\u30c3\u30b7\u30f3\u30b0\u306b\u3088\u308b\u8a50\u53d6\u306f8\u5e74\u9023\u7d9a\u306e\u9078\u51fa\u3067\u3059\u3002JPCERT\/CC\u3078\u306e\u5831\u544a\u4ef6\u6570\u30822025\u5e741\u301c3\u6708\u30675,267\u4ef6\u3068\u9ad8\u6b62\u307e\u308a\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<p><strong>\u307e\u305a\u306f\u8a2d\u5b9a\u306e\u6709\u52b9\u5316\u3068\u3001\u591a\u8981\u7d20\u8a8d\u8a3c\u306e\u9069\u7528\u7bc4\u56f2\u306e\u78ba\u8a8d\u304b\u3089\u59cb\u3081\u3066\u307f\u3066\u304f\u3060\u3055\u3044<\/strong>\u3002<\/p>\n<h3>\u9001\u4fe1\u5074\u306fSPF\u306e\u78ba\u8a8d\u304b\u3089\u59cb\u3081\u3001DMARC\u306fnone\u3067\u306e\u89b3\u6e2c\u304b\u3089\u6bb5\u968e\u7684\u306b\u9032\u3081\u308b<\/h3>\n<p>\u9001\u4fe1\u5074\u306e\u5bfe\u7b56\u306f\u3001\u3044\u304d\u306a\u308aDMARC\u3092\u5f37\u3044\u8a2d\u5b9a\u306b\u3057\u306a\u3044\u3053\u3068\u304c\u8981\u70b9\u3067\u3059\u3002\u624b\u9806\u3068\u3057\u3066\u306f\u3001\u6b21\u306e\u9806\u3067\u9032\u3081\u307e\u3059\u3002<\/p>\n<ul>\n<li>\u81ea\u793e\u30c9\u30e1\u30a4\u30f3\u306bSPF\u30ec\u30b3\u30fc\u30c9\u304c\u8a2d\u5b9a\u3055\u308c\u3066\u3044\u308b\u304b\u3092DNS\u3067\u78ba\u8a8d\u3059\u308b<\/li>\n<li>DKIM\u306e\u7f72\u540d\u8a2d\u5b9a\u304c\u6709\u52b9\u306b\u306a\u3063\u3066\u3044\u308b\u304b\u3092\u3001\u5229\u7528\u4e2d\u306e\u30e1\u30fc\u30eb\u30b5\u30fc\u30d3\u30b9\u3067\u78ba\u8a8d\u3059\u308b<\/li>\n<li>DMARC\u3092\u307e\u305anone\uff08\u4f55\u3082\u3057\u306a\u3044\uff09\u3067\u8a2d\u5b9a\u3057\u3001\u5c4a\u304f\u30ec\u30dd\u30fc\u30c8\u3067\u9001\u4fe1\u72b6\u6cc1\u3092\u89b3\u6e2c\u3059\u308b<\/li>\n<li>\u6b63\u898f\u306e\u30e1\u30fc\u30eb\u304c\u5f3e\u304b\u308c\u306a\u3044\u3053\u3068\u3092\u78ba\u304b\u3081\u3066\u304b\u3089\u3001quarantine\u3001reject\u3078\u9032\u3081\u308b<\/li>\n<\/ul>\n<p>\u6bb5\u968e\u3092\u8e0f\u3080\u7406\u7531\u306f\u3001\u30dd\u30ea\u30b7\u30fc\u3092\u5f37\u3081\u305f\u7d50\u679c\u3068\u3057\u3066\u81ea\u793e\u306e\u6b63\u898f\u30e1\u30fc\u30eb\u304c\u5c4a\u304b\u306a\u304f\u306a\u308b\u30ea\u30b9\u30af\u304c\u3042\u308b\u305f\u3081\u3067\u3059\u3002none\u3067\u306e\u89b3\u6e2c\u671f\u9593\u3092\u631f\u3080\u3053\u3068\u3067\u3001\u793e\u5916\u30b5\u30fc\u30d3\u30b9\u304b\u3089\u306e\u9001\u4fe1\u6f0f\u308c\u306a\u3069\u3092\u4e8b\u524d\u306b\u6d17\u3044\u51fa\u305b\u307e\u3059\u3002<\/p>\n<p>\u666e\u53ca\u72b6\u6cc1\u304b\u3089\u898b\u3066\u3082\u3001\u307e\u3060\u4f59\u5730\u306f\u5927\u304d\u3044\u72b6\u6cc1\u3067\u3059\u30022024\u5e749\u6708\u6642\u70b9\u3067SPF\u306f88.4%\u307e\u3067\u666e\u53ca\u3057\u305f\u4e00\u65b9\u3001DMARC\u306f32.6%\u3067\u3057\u305f\u30022022\u5e7412\u6708\u6642\u70b9\u3067\u306fSPF\u304c77.2%\u3001DMARC\u306f2.7%\u3060\u3063\u305f\u3053\u3068\u3092\u8003\u3048\u308b\u3068\u3001<strong>DMARC\u306e\u5c0e\u5165\u306f\u4eca\u304b\u3089\u7740\u624b\u3057\u3066\u3082\u9045\u304f\u306f\u3042\u308a\u307e\u305b\u3093<\/strong>\u3002<\/p>\n<h3>\u904b\u7528\u30eb\u30fc\u30eb\u306f\u632f\u8fbc\u5148\u306e\u5909\u66f4\u4f9d\u983c\u3092\u96fb\u8a71\u3067\u78ba\u8a8d\u3059\u308b1\u70b9\u304b\u3089\u59cb\u3081\u308b<\/h3>\n<p>3\u5c64\u76ee\u306e\u904b\u7528\u30eb\u30fc\u30eb\u306f\u3001\u5bfe\u8c61\u3092\u7d5e\u3063\u3066\u59cb\u3081\u308b\u306e\u304c\u73fe\u5b9f\u7684\u3067\u3059\u3002IPA\u306e\u89e3\u8aac\u66f8\u306f\u3001\u30d3\u30b8\u30cd\u30b9\u30e1\u30fc\u30eb\u8a50\u6b3a\u306e\u5bfe\u7b56\u3068\u3057\u3066\u6b21\u306e\u9805\u76ee\u3092\u6319\u3052\u3066\u3044\u307e\u3059\u3002<\/p>\n<ul>\n<li>\u91d1\u92ad\u306e\u652f\u6255\u30d5\u30ed\u30fc\u3092\u8907\u6570\u4eba\u3067\u5be9\u67fb\u30fb\u627f\u8a8d\u3059\u308b<\/li>\n<li>\u632f\u8fbc\u5148\u306e\u5909\u66f4\u4f9d\u983c\u306f\u3001\u30e1\u30fc\u30eb\u4ee5\u5916\u306e\u624b\u6bb5\u3067\u78ba\u8a8d\u3059\u308b<\/li>\n<li>\u793e\u5185\u30e1\u30fc\u30eb\u306b\u96fb\u5b50\u7f72\u540d\u3092\u6d3b\u7528\u3059\u308b<\/li>\n<li>\u9001\u4fe1\u30c9\u30e1\u30a4\u30f3\u8a8d\u8a3c\u3092\u5c0e\u5165\u3057\u3001\u81ea\u793e\u30c9\u30e1\u30a4\u30f3\u306e\u306a\u308a\u3059\u307e\u3057\u3092\u6392\u9664\u3059\u308b<\/li>\n<li>\u79c1\u6709\u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9\u306e\u696d\u52d9\u5229\u7528\u3092\u7981\u6b62\u3059\u308b<\/li>\n<li>\u5f37\u56fa\u306a\u591a\u8981\u7d20\u8a8d\u8a3c\u3092\u5c0e\u5165\u3059\u308b<\/li>\n<\/ul>\n<p>\u3044\u305a\u308c\u3082\u3001\u7d44\u7e54\u3068\u3057\u3066\u30eb\u30fc\u30eb\u3092\u6c7a\u3081\u3066\u904b\u7528\u3059\u308b\u3053\u3068\u304c\u524d\u63d0\u3067\u3059\u3002\u3068\u3053\u308d\u304c2024\u5e74\u306eIPA\u8abf\u67fb\u3067\u306f\u3001\u5bfe\u7b56\u3092\u7d44\u7e54\u7684\u306b\u306f\u884c\u3063\u3066\u3044\u306a\u3044\u4f01\u696d\u304c\u5168\u4f53\u306769.7%\u3067\u3057\u305f\u3002100\u540d\u4ee5\u4e0b\u3067\u306f47.6%\u3001101\u540d\u4ee5\u4e0a\u3067\u306f13.6%\u3067\u3059\u3002<\/p>\n<p>\u540c\u30582024\u5e74\u306e\u8abf\u67fb\u3067\u306f\u3001\u4e88\u7b97\u306e\u9762\u3067\u3082\u540c\u3058\u50be\u5411\u304c\u51fa\u3066\u3044\u307e\u3059\u3002\u76f4\u8fd1\u904e\u53bb3\u671f\u306e\u6295\u8cc7\u984d\u306b\u3064\u3044\u3066\u300c\u6295\u8cc7\u3057\u3066\u3044\u306a\u3044\u300d\u300c\u308f\u304b\u3089\u306a\u3044\u300d\u3068\u7b54\u3048\u305f\u4f01\u696d\u304c\u7d047\u5272\u3092\u5360\u3081\u307e\u3059\u3002<\/p>\n<p>\u3053\u3053\u304b\u3089\u8aad\u307f\u53d6\u308c\u308b\u306e\u306f\u3001\u63a8\u5968\u3055\u308c\u308b\u5bfe\u7b56\u306e\u591a\u304f\u304c\u60f3\u5b9a\u8aad\u8005\u5c64\u3067\u306f\u524d\u63d0\u6761\u4ef6\u3092\u6e80\u305f\u305b\u306a\u3044\u3001\u3068\u3044\u3046\u69cb\u9020\u3067\u3059\u3002\u30d3\u30b8\u30cd\u30b9\u30e1\u30fc\u30eb\u8a50\u6b3a\u306f10\u5927\u8105\u5a012026\u3067\u7d44\u7e54\u5411\u3051\u7b2c10\u4f4d\u30011\u4ef6\u3067\u7d041,400\u4e07\u5186\u304c\u52d5\u3044\u305f\u4e8b\u4f8b\u3082\u3042\u308b\u653b\u6483\u3067\u3059\u3002\u305d\u308c\u306b\u5bfe\u3057\u3001\u627f\u8a8d\u30d5\u30ed\u30fc\u3092\u8a2d\u8a08\u3057\u3066\u7dad\u6301\u3059\u308b\u4e3b\u4f53\u304c\u793e\u5185\u306b\u306a\u3044\u4f01\u696d\u304c\u591a\u6570\u6d3e\u306b\u306a\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u305d\u3053\u3067\u3001\u6700\u5c0f\u69cb\u6210\u307e\u3067\u843d\u3068\u3057\u307e\u3059\u3002<strong>\u300c\u632f\u8fbc\u5148\u306e\u5909\u66f4\u4f9d\u983c\u304c\u6765\u305f\u3068\u304d\u3060\u3051\u3001\u30e1\u30fc\u30eb\u4ee5\u5916\u306e\u624b\u6bb5\u3067\u76f8\u624b\u306b\u78ba\u8a8d\u3059\u308b\u300d\u3068\u3044\u30461\u70b9\u306b\u7d5e\u3063\u3066\u30eb\u30fc\u30eb\u5316\u3057\u3066\u304f\u3060\u3055\u3044<\/strong>\u3002\u624b\u9806\u66f8\u3082\u5c02\u4efb\u8005\u3082\u4e0d\u8981\u3067\u3001\u7d4c\u7406\u62c5\u5f53\u8005\u3068\u60c5\u30b7\u30b9\u306e\u5408\u610f\u3060\u3051\u3067\u59cb\u3081\u3089\u308c\u307e\u3059\u3002<\/p>\n<div style=\"border:2px solid #eb6834;border-radius:8px;background:#fdf3ee;padding:14px 18px;margin:1.5em 0\">\n<p style=\"margin:0 0 8px;font-weight:700;color:#c2521f\">\u6ce8\u610f<\/p>\n<p style=\"margin:0\">\u3053\u3053\u3067\u4e26\u3079\u305f2\u3064\u306e\u6570\u5024\u306f\u3001\u95a2\u4fc2\u3092\u76f4\u63a5\u6e2c\u3063\u305f\u3082\u306e\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u30d3\u30b8\u30cd\u30b9\u30e1\u30fc\u30eb\u8a50\u6b3a\u306e\u88ab\u5bb3\u4f01\u696d\u306e\u4f53\u5236\u3092\u8abf\u3079\u305f\u30af\u30ed\u30b9\u96c6\u8a08\u306f\u5b58\u5728\u3057\u307e\u305b\u3093\u3002\u7d041,400\u4e07\u5186\u306e\u4e8b\u4f8b\u306f1\u793e\u304c\u516c\u8868\u3057\u305f\u3082\u306e\u3067\u3001\u56fd\u5185\u306e\u88ab\u5bb3\u306e\u5e73\u5747\u50cf\u3092\u4ee3\u8868\u3057\u307e\u305b\u3093\u3002\u307e\u305f\u300c\u7d44\u7e54\u7684\u306b\u306f\u884c\u3063\u3066\u3044\u306a\u3044\u300d\u306f\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u5bfe\u7b56\u5168\u822c\u306b\u3064\u3044\u3066\u306e\u56de\u7b54\u3067\u3042\u308a\u3001\u7d4c\u7406\u306e\u652f\u6255\u627f\u8a8d\u30d5\u30ed\u30fc\u306e\u6709\u7121\u3092\u5c0b\u306d\u305f\u3082\u306e\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u652f\u6255\u627f\u8a8d\u304c\u5185\u90e8\u7d71\u5236\u3068\u3057\u3066\u5225\u306b\u6574\u5099\u3055\u308c\u3066\u3044\u308b\u4f01\u696d\u3082\u3042\u308a\u307e\u3059\u3002<\/p>\n<\/div>\n<p style=\"font-size:13px;color:#777;margin:1em 0 0\">\u51fa\u5178: <a target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/www.ipa.go.jp\/security\/10threats\/omgdg50000008fi8-att\/kaisetsu_2026_soshiki.pdf\">\u60c5\u5831\u51e6\u7406\u63a8\u9032\u6a5f\u69cb\u300c\u60c5\u5831\u30bb\u30ad\u30e5\u30ea\u30c6\u30a310\u5927\u8105\u5a01 2026\u300d\u7d44\u7e54\u7de8 \u89e3\u8aac\u66f8<\/a>\uff0f<a target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/www.ipa.go.jp\/security\/10threats\/omgdg50000008fi8-att\/setsumei_2026_kojin.pdf\">\u540c\u300c\u60c5\u5831\u30bb\u30ad\u30e5\u30ea\u30c6\u30a310\u5927\u8105\u5a01 2026\u300d\u500b\u4eba\u7de8 \u30cf\u30f3\u30c9\u30d6\u30c3\u30af<\/a>\uff0f<a target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/www.ipa.go.jp\/security\/reports\/sme\/nl10bi000000fbvc-att\/sme-chousa-report2024r1.pdf\">\u540c\u300c2024\u5e74\u5ea6 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href=\"https:\/\/www.jpcert.or.jp\/pr\/2025\/IR_Report2024Q4.pdf\">JPCERT\/CC\u300c\u30a4\u30f3\u30b7\u30c7\u30f3\u30c8\u5831\u544a\u5bfe\u5fdc\u30ec\u30dd\u30fc\u30c8\u300d2025\u5e741\u301c3\u6708<\/a><\/p>\n<h2>\u30e1\u30fc\u30eb\u5bfe\u7b56\u3068\u8a8d\u8a3c\u5bfe\u7b56\u306f\u5206\u3051\u3066\u8a2d\u8a08\u3067\u304d\u306a\u3044<\/h2>\n<p><img decoding=\"async\" alt=\"\u8a8d\u8a3c\u3068\u306e\u9023\u643a\" src=\"https:\/\/venu-sys.co.jp\/jo-sys\/wp-content\/uploads\/sites\/2\/2026\/08\/h2-6-24.png\" 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style=\"font-size:13px;color:#777;margin:1em 0 0\">\u51fa\u5178: <a target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/www.soumu.go.jp\/main_content\/001059979.pdf\">\u56fd\u5bb6\u516c\u5b89\u59d4\u54e1\u4f1a\u307b\u304b\u300c\u4e0d\u6b63\u30a2\u30af\u30bb\u30b9\u884c\u70ba\u306e\u767a\u751f\u72b6\u6cc1\u53ca\u3073\u30a2\u30af\u30bb\u30b9\u5236\u5fa1\u6a5f\u80fd\u306b\u95a2\u3059\u308b\u6280\u8853\u306e\u7814\u7a76\u958b\u767a\u306e\u72b6\u6cc1\u300d<\/a>\uff082026\u5e743\u6708\u516c\u8868\uff09\uff0f<a target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/www.ipa.go.jp\/security\/10threats\/omgdg50000008fi8-att\/setsumei_2026_kojin.pdf\">\u60c5\u5831\u51e6\u7406\u63a8\u9032\u6a5f\u69cb\u300c\u60c5\u5831\u30bb\u30ad\u30e5\u30ea\u30c6\u30a310\u5927\u8105\u5a01 2026\u300d\u500b\u4eba\u7de8 \u30cf\u30f3\u30c9\u30d6\u30c3\u30af<\/a>\uff0f<a target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/www.jpcert.or.jp\/pr\/2025\/IR_Report2024Q4.pdf\">JPCERT\/CC\u300c\u30a4\u30f3\u30b7\u30c7\u30f3\u30c8\u5831\u544a\u5bfe\u5fdc\u30ec\u30dd\u30fc\u30c8\u300d\u5404\u56db\u534a\u671f\u53f7<\/a><\/p>\n<h2>\u30e1\u30fc\u30eb\u5bfe\u7b56\u3060\u3051\u3067\u306f\u9632\u3052\u306a\u3044\u8105\u5a01\u3082\u3042\u308b<\/h2>\n<p><img decoding=\"async\" alt=\"\u30e1\u30fc\u30eb\u4ee5\u5916\u306e\u7d4c\u8def\" src=\"https:\/\/venu-sys.co.jp\/jo-sys\/wp-content\/uploads\/sites\/2\/2026\/08\/h2-7-18.png\" \/><\/p>\n<p>\u30e1\u30fc\u30eb\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u306b\u529b\u3092\u5165\u308c\u308b\u3053\u3068\u306f\u5fc5\u8981\u3067\u3059\u304c\u3001\u305d\u3053\u306b\u5bc4\u305b\u3059\u304e\u308b\u306e\u3082\u554f\u984c\u3067\u3059\u3002\u4fb5\u5165\u7d4c\u8def\u304c\u4ed6\u306b\u3042\u308b\u8105\u5a01\u306b\u3064\u3044\u3066\u306f\u3001\u5225\u306e\u5bfe\u7b56\u304c\u8981\u308a\u307e\u3059\u3002<\/p>\n<p>\u4ee3\u8868\u4f8b\u304c<a href=\"https:\/\/venu-sys.co.jp\/jo-sys\/8638\/\">\u30e9\u30f3\u30b5\u30e0\u30a6\u30a7\u30a2\u5bfe\u7b56<\/a>\u3067\u3059\u3002\u516c\u7684\u7d71\u8a08\u3092\u898b\u308b\u3068\u3001\u611f\u67d3\u7d4c\u8def\u306e\u4e2d\u5fc3\u306f\u30e1\u30fc\u30eb\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u3053\u3053\u3067\u306f\u3001\u5bfe\u7b56\u306e\u512a\u5148\u9806\u4f4d\u3092\u5168\u4f53\u3067\u8003\u3048\u308b\u305f\u3081\u306e\u6750\u6599\u30922\u3064\u78ba\u8a8d\u3057\u307e\u3059\u3002<\/p>\n<h3>\u30e9\u30f3\u30b5\u30e0\u30a6\u30a7\u30a2\u306e\u611f\u67d3\u7d4c\u8def\u306fVPN\u6a5f\u5668\u30fb\u30ea\u30e2\u30fc\u30c8\u30c7\u30b9\u30af\u30c8\u30c3\u30d7\u304c2025\u5e74\u3067\u5408\u8a0887.0%<\/h3>\n<p>\u30e9\u30f3\u30b5\u30e0\u30a6\u30a7\u30a2\u306e\u4fb5\u5165\u53e3\u306f\u3001\u5916\u90e8\u306b\u516c\u958b\u3055\u308c\u3066\u3044\u308b\u6a5f\u5668\u306b\u96c6\u4e2d\u3057\u3066\u3044\u307e\u3059\u3002IPA\u306e\u89e3\u8aac\u66f8\u304c\u5f15\u304f\u8b66\u5bdf\u5e81\u306e\u96c6\u8a08\u3067\u306f\u3001VPN\u6a5f\u5668\u3068\u30ea\u30e2\u30fc\u30c8\u30c7\u30b9\u30af\u30c8\u30c3\u30d7\u7d4c\u7531\u306e\u5408\u8a08\u304c2024\u5e74\u306b86.0%\u30012025\u5e74\u306b\u306f87.0%\u3092\u5360\u3081\u307e\u3057\u305f\u3002\u540c\u3058\u96c6\u8a08\u3067\u300c\u30e1\u30fc\u30eb\u30fb\u6dfb\u4ed8\u30d5\u30a1\u30a4\u30eb\u300d\u306f2025\u5e74\u306b2.2%\u3067\u3059\u3002<\/p>\n<p>\u88ab\u5bb3\u306e\u898f\u6a21\u3082\u516c\u8868\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u4f01\u696d\u30fb\u56e3\u4f53\u7b49\u304b\u3089\u306e\u30e9\u30f3\u30b5\u30e0\u30a6\u30a7\u30a2\u88ab\u5bb3\u306e\u5831\u544a\u4ef6\u6570\u306f\u30012024\u5e74\u306e\u4e0a\u534a\u671f\u304c114\u4ef6\u3001\u4e0b\u534a\u671f\u304c108\u4ef6\u3067\u3057\u305f\u3002<\/p>\n<p><strong>\u30e1\u30fc\u30eb\u5bfe\u7b56\u306b\u5bc4\u305b\u3059\u304e\u308b\u3068\u3001\u5b9f\u969b\u306e\u4fb5\u5165\u7d4c\u8def\u3067\u3042\u308b\u5916\u90e8\u516c\u958b\u6a5f\u5668\u306e\u7ba1\u7406\u304c\u5f8c\u56de\u3057\u306b\u306a\u308a\u307e\u3059<\/strong>\u3002VPN\u6a5f\u5668\u306e\u30d5\u30a1\u30fc\u30e0\u30a6\u30a7\u30a2\u66f4\u65b0\u72b6\u6cc1\u3068\u3001\u30ea\u30e2\u30fc\u30c8\u30c7\u30b9\u30af\u30c8\u30c3\u30d7\u306e\u516c\u958b\u7bc4\u56f2\u3092\u78ba\u8a8d\u3057\u3066\u307f\u3066\u304f\u3060\u3055\u3044\u3002\u306a\u304a\u3001\u3053\u306e\u96c6\u8a08\u306e\u6bcd\u96c6\u56e3\u306f\u8b66\u5bdf\u5e81\u304c\u628a\u63e1\u3057\u305f\u88ab\u5bb3\u306b\u9650\u3089\u308c\u307e\u3059\u3002<\/p>\n<p><img decoding=\"async\" alt=\"\u30e9\u30f3\u30b5\u30e0\u30a6\u30a7\u30a2\u306e\u611f\u67d3\u7d4c\u8def\u306e\u5185\u8a33\uff082025\u5e74\uff09\" src=\"https:\/\/venu-sys.co.jp\/jo-sys\/wp-content\/uploads\/sites\/2\/2026\/08\/chart-5-ransomware-route.png\" \/><\/p>\n<p style=\"font-size:13px;color:#777;margin:0.5em 0 0\">\u56f3\u306e\u51fa\u5178: <a target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/www.ipa.go.jp\/security\/10threats\/omgdg50000008fi8-att\/kaisetsu_2026_soshiki.pdf\">\u60c5\u5831\u51e6\u7406\u63a8\u9032\u6a5f\u69cb\u300c\u60c5\u5831\u30bb\u30ad\u30e5\u30ea\u30c6\u30a310\u5927\u8105\u5a01 2026\u300d\u7d44\u7e54\u7de8 \u89e3\u8aac\u66f8<\/a>\uff08\u539f\u30c7\u30fc\u30bf\u306f\u8b66\u5bdf\u5e81\uff09<\/p>\n<h3>\u4e2d\u5c0f\u4f01\u696d\u306e14.8%\u304c\u30a6\u30a4\u30eb\u30b9\u611f\u67d3\u30018.3%\u304c\u30e9\u30f3\u30b5\u30e0\u30a6\u30a7\u30a2\u88ab\u5bb3\u3092\u8a8d\u8b58\u3057\u3066\u3044\u308b<\/h3>\n<p>\u5b9f\u969b\u306e\u88ab\u5bb3\u306f\u3001\u4e2d\u5c0f\u4f01\u696d\u3067\u3082\u4e00\u5b9a\u306e\u5272\u5408\u3067\u8a8d\u8b58\u3055\u308c\u3066\u3044\u307e\u3059\u3002IPA\u306e2024\u5e74\u5ea6\u4e2d\u5c0f\u4f01\u696d\u5b9f\u614b\u8abf\u67fb\uff08\u6709\u52b9\u56de\u7b544,191\u4ef6\uff09\u3067\u5831\u544a\u3055\u308c\u305f\u5185\u5bb9\u306f\u6b21\u306e\u3068\u304a\u308a\u3067\u3059\u3002<\/p>\n<ul>\n<li>2023\u5e74\u5ea6\u306b\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf\u30a6\u30a4\u30eb\u30b9\u306e\u611f\u67d3\u88ab\u5bb3\u3092\u53d7\u3051\u305f\u4f01\u696d\u306f14.8%\uff08619\u4ef6\uff09<\/li>\n<li>2023\u5e74\u5ea6\u306b\u30e9\u30f3\u30b5\u30e0\u30a6\u30a7\u30a2\u306e\u611f\u67d3\u88ab\u5bb3\u3092\u53d7\u3051\u305f\u4f01\u696d\u306f8.3%\uff08349\u4ef6\uff09<\/li>\n<li>\u88ab\u5bb3\u984d\u306e\u53c2\u8003\u5024\u3068\u3057\u3066\u3001\u30e9\u30f3\u30b5\u30e0\u30a6\u30a7\u30a2\u88ab\u5bb3\u3092\u53d7\u3051\u305f\u7d44\u7e54\u306e\u5e73\u5747\u88ab\u5bb3\u984d\u306f2,386\u4e07\u5186<\/li>\n<\/ul>\n<p>\u5e73\u5747\u88ab\u5bb3\u984d\u306f\u3001JNSA\u304c2017\u5e741\u6708\u304b\u30892022\u5e746\u6708\u306b\u516c\u8868\u30fb\u5831\u9053\u3055\u308c\u305f\u56fd\u5185\u306e\u7d041,300\u7d44\u7e54\u3092\u5bfe\u8c61\u3068\u3057\u3066\u96c6\u8a08\u3057\u305f\u6570\u5024\u3067\u3059\u3002IPA\u306e\u5831\u544a\u66f8\u306b\u306f\u3001\u3053\u306e\u96c6\u8a08\u306b\u4e2d\u5c0f\u4f01\u696d\u3060\u3051\u3067\u306a\u304f\u5927\u4f01\u696d\u3084\u56e3\u4f53\u7b49\u306e\u56de\u7b54\u3082\u542b\u307e\u308c\u308b\u3068\u6ce8\u8a18\u304c\u3042\u308a\u307e\u3059\u3002<strong>\u5e73\u5747\u5024\u3067\u3042\u308b\u305f\u3081\u3001\u5c11\u6570\u306e\u5927\u898f\u6a21\u4e8b\u6848\u306b\u5f15\u304d\u4e0a\u3052\u3089\u308c\u3066\u3044\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059<\/strong>\u3002\u53c2\u8003\u5024\u3068\u3057\u3066\u6271\u3063\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<p>\u307e\u305f\u3053\u308c\u3089\u306e\u5272\u5408\u306f\u3001\u4f01\u696d\u306e\u81ea\u5df1\u7533\u544a\u306b\u57fa\u3065\u304f\u8a8d\u8b58\u30d9\u30fc\u30b9\u306e\u6570\u5024\u3067\u3059\u3002\u6c17\u3065\u3044\u3066\u3044\u306a\u3044\u88ab\u5bb3\u306f\u542b\u307e\u308c\u3066\u3044\u307e\u305b\u3093\u3002\u5b9f\u969b\u306e\u88ab\u5bb3\u7387\u306f\u3001\u3053\u306e\u6570\u5024\u3088\u308a\u9ad8\u3044\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<p style=\"font-size:13px;color:#777;margin:1em 0 0\">\u51fa\u5178: <a target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/www.ipa.go.jp\/security\/10threats\/omgdg50000008fi8-att\/kaisetsu_2026_soshiki.pdf\">\u60c5\u5831\u51e6\u7406\u63a8\u9032\u6a5f\u69cb\u300c\u60c5\u5831\u30bb\u30ad\u30e5\u30ea\u30c6\u30a310\u5927\u8105\u5a01 2026\u300d\u7d44\u7e54\u7de8 \u89e3\u8aac\u66f8<\/a>\uff0f<a target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/www.ipa.go.jp\/publish\/wp-security\/j5u9nn0000004wk0-att\/ISWP2025_Chap1.pdf\">\u540c\u300c\u60c5\u5831\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u767d\u66f82025\u300d<\/a>\uff0f<a target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/www.ipa.go.jp\/security\/reports\/sme\/nl10bi000000fbvc-att\/sme-chousa-report2024r1.pdf\">\u540c\u300c2024\u5e74\u5ea6 \u4e2d\u5c0f\u4f01\u696d\u306b\u304a\u3051\u308b\u60c5\u5831\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u5bfe\u7b56\u306b\u95a2\u3059\u308b\u5b9f\u614b\u8abf\u67fb\u300d<\/a><\/p>\n<h2>\u30e1\u30fc\u30eb\u7d4c\u7531\u306e\u88ab\u5bb3\u306b\u306f\u3001\u7d4c\u8def\u5225\u30fb\u91d1\u984d\u306e\u516c\u7684\u7d71\u8a08\u304c\u898b\u5f53\u305f\u3089\u306a\u3044<\/h2>\n<p><img decoding=\"async\" alt=\"\u30c7\u30fc\u30bf\u306e\u9650\u754c\u3092\u958b\u793a\" src=\"https:\/\/venu-sys.co.jp\/jo-sys\/wp-content\/uploads\/sites\/2\/2026\/08\/h2-8-9.png\" \/><\/p>\n<p>\u6700\u5f8c\u306b\u3001\u516c\u7684\u30c7\u30fc\u30bf\u3067\u5206\u304b\u308b\u3053\u3068\u306e\u9650\u754c\u3092\u958b\u793a\u3057\u3066\u304a\u304d\u307e\u3059\u3002\u3053\u3053\u307e\u3067\u898b\u3066\u304d\u305f\u3068\u304a\u308a\u3001\u30e9\u30f3\u30b5\u30e0\u30a6\u30a7\u30a2\u306b\u3064\u3044\u3066\u306f\u88ab\u5bb3\u306e\u898f\u6a21\u3068\u7d4c\u8def\u306e\u4e21\u65b9\u304c\u516c\u8868\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u5831\u544a\u4ef6\u6570\u306f2024\u5e74\u4e0a\u534a\u671f114\u4ef6\u30fb\u4e0b\u534a\u671f108\u4ef6\u3068\u534a\u671f\u5358\u4f4d\u3067\u793a\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u611f\u67d3\u7d4c\u8def\u3082\u3001VPN\u6a5f\u5668\u3068\u30ea\u30e2\u30fc\u30c8\u30c7\u30b9\u30af\u30c8\u30c3\u30d7\u306e\u5408\u8a08\u304c2025\u5e74\u306787.0%\u3068\u3044\u3046\u5185\u8a33\u307e\u3067\u5206\u304b\u308a\u307e\u3059\u3002\u3053\u306e\u7c92\u5ea6\u304c\u3042\u308b\u305f\u3081\u3001\u3069\u3053\u304b\u3089\u5165\u3089\u308c\u308b\u304b\u306b\u57fa\u3065\u3044\u3066\u512a\u5148\u9806\u4f4d\u3092\u6c7a\u3081\u3089\u308c\u307e\u3059\u3002<\/p>\n<p>\u30e1\u30fc\u30eb\u8d77\u70b9\u306e\u653b\u6483\u306b\u306f\u3001\u540c\u7b49\u306e\u30c7\u30fc\u30bf\u304c\u3042\u308a\u307e\u305b\u3093\u3002\u30d3\u30b8\u30cd\u30b9\u30e1\u30fc\u30eb\u8a50\u6b3a\u306f10\u5927\u8105\u5a012026\u3067\u7d44\u7e54\u5411\u3051\u7b2c10\u4f4d\u3068\u3044\u3046\u4f4d\u7f6e\u3065\u3051\u3068\u3001\u7d041,400\u4e07\u5186\u3068\u3044\u3046\u500b\u5225\u4e8b\u4f8b\u306e\u88ab\u5bb3\u984d\u306f\u5206\u304b\u308a\u307e\u3059\u3002\u3057\u304b\u3057\u56fd\u5185\u306e\u88ab\u5bb3\u4ef6\u6570\u30fb\u88ab\u5bb3\u7dcf\u984d\u306e\u7d71\u8a08\u306f\u3001\u4eca\u56de\u306e\u8abf\u67fb\u7bc4\u56f2\u3067\u306f\u78ba\u8a8d\u3067\u304d\u307e\u305b\u3093\u3067\u3057\u305f\u3002<\/p>\n<p>\u3053\u3053\u304b\u3089\u8aad\u307f\u53d6\u308c\u308b\u5b9f\u52d9\u4e0a\u306e\u5e30\u7d50\u306f1\u3064\u3067\u3059\u3002<strong>\u30e1\u30fc\u30eb\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u3078\u306e\u6295\u8cc7\u3092\u793e\u5185\u3067\u8aac\u660e\u3059\u308b\u3068\u304d\u3001\u300c\u30e1\u30fc\u30eb\u7d4c\u7531\u3067\u5e74\u9593\u4f55\u4ef6\u3001\u3044\u304f\u3089\u306e\u88ab\u5bb3\u304c\u51fa\u3066\u3044\u308b\u304b\u300d\u3092\u4e00\u6b21\u30c7\u30fc\u30bf\u3067\u793a\u305b\u307e\u305b\u3093<\/strong>\u3002\u7a1f\u8b70\u306e\u6839\u62e0\u306f\u3001\u4f53\u5236\u306e\u6b20\u843d\uff08\u7d44\u7e54\u7684\u306a\u5bfe\u7b56\u306a\u305769.7%\uff09\u3084\u666e\u53ca\u5ea6\uff08DMARC\u5c0e\u5165\u738732.6%\uff09\u306b\u7f6e\u304b\u3056\u308b\u3092\u5f97\u306a\u3044\u306e\u304c\u73fe\u72b6\u3067\u3059\u3002<\/p>\n<div style=\"border:2px solid #eb6834;border-radius:8px;background:#fdf3ee;padding:14px 18px;margin:1.5em 0\">\n<p style=\"margin:0 0 8px;font-weight:700;color:#c2521f\">\u6ce8\u610f<\/p>\n<p style=\"margin:0\">\u300c\u78ba\u8a8d\u3067\u304d\u305f\u7bc4\u56f2\u3067\u306f\u898b\u5f53\u305f\u3089\u306a\u3044\u300d\u3068\u3044\u3046\u3060\u3051\u3067\u3001\u516c\u7684\u7d71\u8a08\u304c\u5b58\u5728\u3057\u306a\u3044\u3068\u65ad\u5b9a\u3059\u308b\u3082\u306e\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u8b66\u5bdf\u5e81\u306e\u8cc7\u6599\u3084\u30d5\u30a3\u30c3\u30b7\u30f3\u30b0\u5bfe\u7b56\u5354\u8b70\u4f1a\u306e\u6708\u6b21\u5831\u544a\u306b\u3001\u8a72\u5f53\u3059\u308b\u30c7\u30fc\u30bf\u304c\u5b58\u5728\u3059\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002\u306a\u304a\u3001\u30d5\u30a3\u30c3\u30b7\u30f3\u30b0\u5bfe\u7b56\u5354\u8b70\u4f1a\u306e\u6708\u6b21\u5831\u544a\u4ef6\u6570\u3068\u3001DMARC\u30dd\u30ea\u30b7\u30fc\uff08reject \/ quarantine \/ none\uff09\u306e\u5185\u8a33\u306b\u3064\u3044\u3066\u306f\u3001\u4e00\u6b21\u60c5\u5831\u306b\u5230\u9054\u3067\u304d\u305a\u51fa\u5178\u3092\u78ba\u8a8d\u3067\u304d\u307e\u305b\u3093\u3067\u3057\u305f\u3002\u305d\u306e\u305f\u3081\u3001\u672c\u8a18\u4e8b\u3067\u306f\u4f7f\u7528\u3057\u3066\u3044\u307e\u305b\u3093\u3002<\/p>\n<\/div>\n<p style=\"font-size:13px;color:#777;margin:1em 0 0\">\u51fa\u5178: <a target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/www.ipa.go.jp\/publish\/wp-security\/j5u9nn0000004wk0-att\/ISWP2025_Chap1.pdf\">\u60c5\u5831\u51e6\u7406\u63a8\u9032\u6a5f\u69cb\u300c\u60c5\u5831\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u767d\u66f82025\u300d<\/a>\uff0f<a target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/www.ipa.go.jp\/security\/10threats\/omgdg50000008fi8-att\/kaisetsu_2026_soshiki.pdf\">\u540c\u300c\u60c5\u5831\u30bb\u30ad\u30e5\u30ea\u30c6\u30a310\u5927\u8105\u5a01 2026\u300d\u7d44\u7e54\u7de8 \u89e3\u8aac\u66f8<\/a>\uff0f<a target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/www.ipa.go.jp\/security\/reports\/sme\/nl10bi000000fbvc-att\/sme-chousa-report2024r1.pdf\">\u540c\u300c2024\u5e74\u5ea6 \u4e2d\u5c0f\u4f01\u696d\u306b\u304a\u3051\u308b\u60c5\u5831\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u5bfe\u7b56\u306b\u95a2\u3059\u308b\u5b9f\u614b\u8abf\u67fb\u300d<\/a>\uff0f<a target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/www.soumu.go.jp\/johotsusintokei\/whitepaper\/ja\/r07\/html\/nd21a240.html\">\u7dcf\u52d9\u7701\u300c\u4ee4\u548c7\u5e74\u7248 \u60c5\u5831\u901a\u4fe1\u767d\u66f8\u300d<\/a><\/p>\n<h2>\u307e\u3068\u3081<\/h2>\n<p>\u30e1\u30fc\u30eb\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u306e\u5b9f\u614b\u3068\u5bfe\u7b56\u306e\u9806\u756a\u3092\u3001\u516c\u7684\u30c7\u30fc\u30bf\u3067\u6574\u7406\u3057\u3066\u304d\u307e\u3057\u305f\u3002\u8981\u70b9\u306f\u6b21\u306e4\u3064\u3067\u3059\u3002<\/p>\n<ul>\n<li>JPCERT\/CC\u3078\u306e\u30d5\u30a3\u30c3\u30b7\u30f3\u30b0\u30b5\u30a4\u30c8\u306e\u5831\u544a\u306f2025\u5e741\u301c3\u6708\u30675,267\u4ef6\u3068\u9ad8\u6b62\u307e\u308a\u3057\u30016\u56db\u534a\u671f\u3092\u901a\u3058\u3066\u6e1b\u5c11\u5c40\u9762\u304c\u3042\u308a\u307e\u305b\u3093<\/li>\n<li>DMARC\u306eJP\u30c9\u30e1\u30a4\u30f3\u5c0e\u5165\u7387\u306f2024\u5e749\u6708\u6642\u70b9\u306732.6%\u3067\u30013\u5206\u306e2\u306f\u81ea\u793e\u3092\u9a19\u308b\u30e1\u30fc\u30eb\u3078\u306e\u6307\u793a\u3092\u51fa\u305b\u3066\u3044\u307e\u305b\u3093<\/li>\n<li>\u7d44\u7e54\u7684\u306a\u5bfe\u7b56\u3092\u884c\u3063\u3066\u3044\u306a\u3044\u4f01\u696d\u306f2024\u5e74\u8abf\u67fb\u306769.7%\u3002\u904b\u7528\u3092\u5fc5\u8981\u3068\u3057\u306a\u3044\u8a2d\u5b9a\u304b\u3089\u59cb\u3081\u308b\u306e\u304c\u73fe\u5b9f\u7684\u3067\u3059<\/li>\n<li>\u8b58\u5225\u7b26\u53f7\u7a83\u7528\u578b\u306e\u4e0d\u6b63\u30a2\u30af\u30bb\u30b9\u306e\u691c\u6319\u4ef6\u6570\u306e\u3046\u306119.3%\u306f\u30d5\u30a3\u30c3\u30b7\u30f3\u30b0\u30b5\u30a4\u30c8\u7d4c\u7531\u3067\u3001\u8a8d\u8a3c\u5074\u306e\u5bfe\u7b56\u3068\u4e00\u4f53\u3067\u8003\u3048\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059<\/li>\n<\/ul>\n<p><strong>\u88fd\u54c1\u3092\u5165\u308c\u308b\u304b\u3069\u3046\u304b\u3092\u691c\u8a0e\u3059\u308b\u524d\u306b\u3001\u7740\u624b\u3067\u304d\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059<\/strong>\u3002\u81ea\u793e\u30c9\u30e1\u30a4\u30f3\u306eSPF\u8a2d\u5b9a\u306e\u78ba\u8a8d\u3068\u3001\u632f\u8fbc\u5148\u306e\u5909\u66f4\u4f9d\u983c\u304c\u6765\u305f\u3068\u304d\u306e\u96fb\u8a71\u78ba\u8a8d\u3002\u3053\u306e2\u3064\u304b\u3089\u59cb\u3081\u3066\u307f\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<p style=\"font-size:13px;color:#777;margin:1em 0 0\">\u51fa\u5178: <a target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/www.jpcert.or.jp\/pr\/2025\/IR_Report2024Q4.pdf\">JPCERT\/CC\u300c\u30a4\u30f3\u30b7\u30c7\u30f3\u30c8\u5831\u544a\u5bfe\u5fdc\u30ec\u30dd\u30fc\u30c8\u300d2025\u5e741\u301c3\u6708<\/a>\uff0f<a target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/www.soumu.go.jp\/johotsusintokei\/whitepaper\/ja\/r07\/html\/nd21a240.html\">\u7dcf\u52d9\u7701\u300c\u4ee4\u548c7\u5e74\u7248 \u60c5\u5831\u901a\u4fe1\u767d\u66f8\u300d<\/a>\uff0f<a target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/www.ipa.go.jp\/security\/reports\/sme\/nl10bi000000fbvc-att\/sme-chousa-report2024r1.pdf\">\u60c5\u5831\u51e6\u7406\u63a8\u9032\u6a5f\u69cb\u300c2024\u5e74\u5ea6 \u4e2d\u5c0f\u4f01\u696d\u306b\u304a\u3051\u308b\u60c5\u5831\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u5bfe\u7b56\u306b\u95a2\u3059\u308b\u5b9f\u614b\u8abf\u67fb\u300d<\/a>\uff0f<a target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/www.soumu.go.jp\/main_content\/001059979.pdf\">\u56fd\u5bb6\u516c\u5b89\u59d4\u54e1\u4f1a\u307b\u304b\u300c\u4e0d\u6b63\u30a2\u30af\u30bb\u30b9\u884c\u70ba\u306e\u767a\u751f\u72b6\u6cc1\u53ca\u3073\u30a2\u30af\u30bb\u30b9\u5236\u5fa1\u6a5f\u80fd\u306b\u95a2\u3059\u308b\u6280\u8853\u306e\u7814\u7a76\u958b\u767a\u306e\u72b6\u6cc1\u300d<\/a><\/p>\n<h2>\u60c5\u30b7\u30b9\u62c5\u5f53\u8005\u306e\u5b66\u3073\u76f4\u3057\u306b\u306f\u300c\u60c5\u30b7\u30b9\u30ab\u30ec\u30c3\u30b8\u300d<\/h2>\n<p><a target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/www.josys-college.com\/\"><img decoding=\"async\" src=\"https:\/\/venu-sys.co.jp\/jo-sys\/wp-content\/uploads\/sites\/2\/2026\/08\/cta-josys-college.jpg\" alt=\"\u60c5\u30b7\u30b9\u30ab\u30ec\u30c3\u30b8\" \/><\/a><\/p>\n<p>\u30e1\u30fc\u30eb\u5bfe\u7b56\u306f\u3001\u8a2d\u5b9a\u3060\u3051\u3067\u5b8c\u7d50\u3057\u307e\u305b\u3093\u3002\u4e0d\u5be9\u306a\u30e1\u30fc\u30eb\u306b\u6c17\u3065\u3044\u3066\u5831\u544a\u3059\u308b\u793e\u54e1\u5074\u306e\u5224\u65ad\u304c\u3001\u6700\u7d42\u7684\u306a\u78ba\u8a8d\u306e\u5f79\u5272\u3092\u62c5\u3044\u307e\u3059\u3002\u62c5\u5f53\u8005\u3068\u5229\u7528\u8005\u306e\u53cc\u65b9\u3067\u77e5\u8b58\u3092\u5e95\u4e0a\u3052\u3057\u3066\u3044\u304f\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u304c\u3001\u65e5\u3005\u306e\u904b\u7528\u5bfe\u5fdc\u306b\u8ffd\u308f\u308c\u308b\u4e2d\u3067\u5b66\u3076\u6642\u9593\u3092\u78ba\u4fdd\u3059\u308b\u306e\u306f\u7c21\u5358\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n<p>\u300c\u60c5\u30b7\u30b9\u30ab\u30ec\u30c3\u30b8\u300d\u306f\u3001\u65b0\u4eba\u30fb\u3072\u3068\u308a\u60c5\u30b7\u30b9\u306e\u305f\u3081\u306e\u30de\u30a4\u30af\u30ed\u30e9\u30fc\u30cb\u30f3\u30b0LMS\u3067\u3059\u3002\u696d\u52d9\u306e\u5408\u9593\u306b\u5c11\u3057\u305a\u3064\u9032\u3081\u3089\u308c\u308b\u5f62\u306b\u3057\u3066\u3044\u308b\u305f\u3081\u3001\u307e\u3068\u307e\u3063\u305f\u7814\u4fee\u6642\u9593\u3092\u53d6\u308c\u306a\u3044\u73fe\u5834\u3067\u3082\u7d9a\u3051\u3089\u308c\u307e\u3059\u3002<\/p>\n<div style=\"border:2px solid #2d4f8f;border-radius:8px;background:#f2f5fb;padding:14px 18px;margin:1.5em 0\">\n<p style=\"margin:0 0 8px;font-weight:700;color:#2d4f8f\">\u60c5\u30b7\u30b9\u30ab\u30ec\u30c3\u30b8\u306e\u7279\u5fb4<\/p>\n<ul style=\"margin:0;padding-left:20px\">\n<li>\u6570\u5206\u306e\u52d5\u753b\u3068\u5c0f\u30c6\u30b9\u30c8\u3067\u3001\u3059\u304d\u307e\u6642\u9593\u306b\u5b66\u7fd2\u3092\u9032\u3081\u3089\u308c\u308b<\/li>\n<li>\u5fc5\u4fee\u306e\u5272\u308a\u5f53\u3066\u30fb\u671f\u9650\u8a2d\u5b9a\u30fb\u9032\u6357\u30c0\u30c3\u30b7\u30e5\u30dc\u30fc\u30c9\u3067\u3001\u53d7\u8b1b\u72b6\u6cc1\u3092\u7ba1\u7406\u3067\u304d\u308b<\/li>\n<li>\u81ea\u793e\u30ab\u30ea\u30ad\u30e5\u30e9\u30e0\u306e\u7de8\u6210\u3068\u3001CSV\u3067\u306e\u6559\u80b2\u8a18\u9332\u306e\u51fa\u529b\u306b\u5bfe\u5fdc<\/li>\n<\/ul>\n<\/div>\n<p>\u5c0e\u5165\u306f5\u540d\u304b\u3089\u53ef\u80fd\u3067\u3001\u652f\u6255\u3044\u306f\u8acb\u6c42\u66f8\u6255\u3044\u306b\u5bfe\u5fdc\u3057\u3066\u3044\u307e\u3059\u3002\u521d\u671f\u8a2d\u5b9a\u306b\u304b\u304b\u308b\u6642\u9593\u306f\u7d0410\u5206\u3067\u3059\u3002\u307e\u305a\u306f\u30b5\u30fc\u30d3\u30b9\u5185\u5bb9\u3092\u78ba\u8a8d\u3057\u3066\u307f\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<p 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href=\"https:\/\/www.ipa.go.jp\/publish\/wp-security\/j5u9nn0000004wk0-att\/ISWP2025_Chap1.pdf\">\u60c5\u5831\u51e6\u7406\u63a8\u9032\u6a5f\u69cb\uff08IPA\uff09\u300c\u60c5\u5831\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u767d\u66f82025\u300d<\/a><\/li>\n<li><a target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/www.jpcert.or.jp\/pr\/2024\/IR_Report2023Q3.pdf\">JPCERT\/CC\u300c\u30a4\u30f3\u30b7\u30c7\u30f3\u30c8\u5831\u544a\u5bfe\u5fdc\u30ec\u30dd\u30fc\u30c8\u300d2023\u5e7410\u301c12\u6708<\/a><\/li>\n<li><a target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/www.jpcert.or.jp\/pr\/2024\/IR_Report2023Q4.pdf\">JPCERT\/CC\u300c\u30a4\u30f3\u30b7\u30c7\u30f3\u30c8\u5831\u544a\u5bfe\u5fdc\u30ec\u30dd\u30fc\u30c8\u300d2024\u5e741\u301c3\u6708<\/a><\/li>\n<li><a target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/www.jpcert.or.jp\/pr\/2024\/IR_Report2024Q1.pdf\">JPCERT\/CC\u300c\u30a4\u30f3\u30b7\u30c7\u30f3\u30c8\u5831\u544a\u5bfe\u5fdc\u30ec\u30dd\u30fc\u30c8\u300d2024\u5e744\u301c6\u6708<\/a><\/li>\n<li><a target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/www.jpcert.or.jp\/pr\/2024\/IR_Report2024Q2.pdf\">JPCERT\/CC\u300c\u30a4\u30f3\u30b7\u30c7\u30f3\u30c8\u5831\u544a\u5bfe\u5fdc\u30ec\u30dd\u30fc\u30c8\u300d2024\u5e747\u301c9\u6708<\/a><\/li>\n<li><a target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/www.jpcert.or.jp\/pr\/2025\/IR_Report2024Q3.pdf\">JPCERT\/CC\u300c\u30a4\u30f3\u30b7\u30c7\u30f3\u30c8\u5831\u544a\u5bfe\u5fdc\u30ec\u30dd\u30fc\u30c8\u300d2024\u5e7410\u301c12\u6708<\/a><\/li>\n<li><a target=\"_blank\" rel=\"noopener noreferrer\" 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