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href=\"https:\/\/www.jpcert.or.jp\/qr\/2026\/QR_FY2025-Q3.pdf\">JPCERT\/CC\u300c\u56db\u534a\u671f\u30ec\u30dd\u30fc\u30c8\u300d\u5404\u53f7<\/a>\uff09<\/li>\n<li>2025\u5e74\u306e\u8b58\u5225\u7b26\u53f7\u7a83\u7528\u578b\u306e\u4e0d\u6b63\u30a2\u30af\u30bb\u30b9\u691c\u6319\u4ef6\u6570399\u4ef6\u306e\u3046\u3061\u300177\u4ef6\u306f\u30d5\u30a3\u30c3\u30b7\u30f3\u30b0\u30b5\u30a4\u30c8\u3067\u5165\u624b\u3057\u305fID\u3084\u30d1\u30b9\u30ef\u30fc\u30c9\u304c\u4f7f\u308f\u308c\u3066\u3044\u307e\u3057\u305f\uff08\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\u30fb\u7dcf\u52d9\u5927\u81e3\u30fb\u7d4c\u6e08\u7523\u696d\u5927\u81e3\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>\uff09<\/li>\n<li>\u306a\u308a\u3059\u307e\u3057\u30e1\u30fc\u30eb\u3092\u6280\u8853\u7684\u306b\u9632\u3050DMARC\u306eJP\u30c9\u30e1\u30a4\u30f3\u5c0e\u5165\u7387\u306f\u30012025\u5e7412\u6708\u6642\u70b9\u306737.2%\uff08\u51fa\u5178: <a target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/www.soumu.go.jp\/johotsusintokei\/whitepaper\/ja\/r08\/html\/nd21a240.html\">\u7dcf\u52d9\u7701\u300c\u4ee4\u548c8\u5e74\u7248 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href=\"https:\/\/venu-sys.co.jp\/jo-sys\/8595\/\">\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u30a4\u30f3\u30b7\u30c7\u30f3\u30c8<\/a>\u306e\u4e00\u985e\u578b\u3068\u3057\u3066\u3001\u30d5\u30a3\u30c3\u30b7\u30f3\u30b0\u3092\u4f4d\u7f6e\u3065\u3051\u3066\u8003\u3048\u3066\u307f\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<h3>\u30e1\u30fc\u30eb\u3084SMS\u3067\u507d\u30b5\u30a4\u30c8\u306b\u8a98\u5c0e\u3057\u3001ID\u30fb\u30d1\u30b9\u30ef\u30fc\u30c9\u3092\u8a50\u53d6\u3059\u308b\u306e\u304c\u5178\u578b\u7684\u306a\u624b\u53e3<\/h3>\n<p><strong>\u30d5\u30a3\u30c3\u30b7\u30f3\u30b0\u653b\u6483\u306e\u4e2d\u5fc3\u306b\u3042\u308b\u306e\u306f\u3001\u6b63\u898f\u30b5\u30a4\u30c8\u305d\u3063\u304f\u308a\u306e\u507d\u30b5\u30a4\u30c8\u3078\u5229\u7528\u8005\u3092\u8a98\u5c0e\u3059\u308b\u6d41\u308c\u3067\u3059\u3002<\/strong><\/p>\n<p>JPCERT\/CC\u306f\u3001\u30d5\u30a3\u30c3\u30b7\u30f3\u30b0\u30b5\u30a4\u30c8\u30922\u7a2e\u985e\u306b\u5206\u3051\u3066\u6574\u7406\u3057\u3066\u3044\u307e\u3059\u3002\u3072\u3068\u3064\u306f\u3001\u9280\u884c\u3084\u30af\u30ec\u30b8\u30c3\u30c8\u30ab\u30fc\u30c9\u4f1a\u793e\u306a\u3069\u306e\u6b63\u898f\u30b5\u30a4\u30c8\u306b\u4f3c\u305b\u3066\u4f5c\u3089\u308c\u305f\u30b5\u30a4\u30c8\u3067\u3059\u3002\u3082\u3046\u3072\u3068\u3064\u306f\u3001\u305d\u3053\u3078\u5229\u7528\u8005\u3092\u9001\u308a\u8fbc\u3080\u305f\u3081\u306b\u8a2d\u7f6e\u3055\u308c\u305f\u8a98\u5c0e\u7528\u306e\u30b5\u30a4\u30c8\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<p>\u8a98\u5c0e\u306e\u5165\u53e3\u306f\u30e1\u30fc\u30eb\u306b\u9650\u308a\u307e\u305b\u3093\u3002SMS\u3092\u4f7f\u3046\u624b\u53e3\u306f\u30b9\u30df\u30c3\u30b7\u30f3\u30b0\u3068\u547c\u3070\u308c\u3001\u5b85\u914d\u4fbf\u306e\u4e0d\u5728\u901a\u77e5\u3084\u6c7a\u6e08\u30b5\u30fc\u30d3\u30b9\u306e\u8b66\u544a\u3092\u88c5\u3046\u3082\u306e\u304c\u77e5\u3089\u308c\u3066\u3044\u307e\u3059\u3002\u30e1\u30fc\u30eb\u3060\u3051\u3092\u8b66\u6212\u5bfe\u8c61\u306b\u3057\u3066\u3044\u308b\u3068\u3001\u3053\u3046\u3057\u305f\u7d4c\u8def\u3092\u898b\u843d\u3068\u3057\u307e\u3059\u3002<\/p>\n<p>\u3044\u305a\u308c\u306e\u5834\u5408\u3082\u3001\u5229\u7528\u8005\u304c\u81ea\u5206\u3067\u8a8d\u8a3c\u60c5\u5831\u3092\u5165\u529b\u3057\u3066\u3057\u307e\u3046\u70b9\u306f\u5171\u901a\u3067\u3059\u3002\u653b\u6483\u8005\u306f\u6b63\u898f\u306e\u30ed\u30b0\u30a4\u30f3\u753b\u9762\u3068\u898b\u5206\u3051\u304c\u3064\u304b\u306a\u3044\u753b\u9762\u3092\u7528\u610f\u3057\u3001\u5165\u529b\u3055\u308c\u305f\u60c5\u5831\u3092\u305d\u306e\u307e\u307e\u53d7\u3051\u53d6\u308b\u4ed5\u7d44\u307f\u3067\u3059\u3002<\/p>\n<h3>\u53d6\u5f15\u5148\u306b\u306a\u308a\u3059\u307e\u3059\u30d3\u30b8\u30cd\u30b9\u30e1\u30fc\u30eb\u8a50\u6b3a\uff08BEC\uff09\u306f\u91d1\u92ad\u88ab\u5bb3\u306b\u76f4\u7d50\u3059\u308b<\/h3>\n<p><strong>\u7d44\u7e54\u3092\u72d9\u3046\u30d5\u30a3\u30c3\u30b7\u30f3\u30b0\u306e\u4ee3\u8868\u683c\u304c\u3001\u30d3\u30b8\u30cd\u30b9\u30e1\u30fc\u30eb\u8a50\u6b3a\uff08BEC\uff09\u3067\u3059\u3002<\/strong>\u53d6\u5f15\u5148\u3084\u81ea\u793e\u306e\u7d4c\u55b6\u5c64\u306b\u306a\u308a\u3059\u307e\u3057\u3001\u507d\u306e\u632f\u8fbc\u5148\u3078\u9001\u91d1\u3055\u305b\u3066\u91d1\u92ad\u3092\u3060\u307e\u3057\u53d6\u308a\u307e\u3059\u3002<\/p>\n<p>IPA\u306e\u300c\u60c5\u5831\u30bb\u30ad\u30e5\u30ea\u30c6\u30a310\u5927\u8105\u5a01 2026\u300d\u3067\u306f\u3001\u30d3\u30b8\u30cd\u30b9\u30e1\u30fc\u30eb\u8a50\u6b3a\u304c\u7d44\u7e54\u5411\u3051\u8105\u5a01\u306e10\u4f4d\u306b\u5165\u308a\u30012018\u5e74\u306e\u521d\u9078\u51fa\u304b\u30899\u5e74\u9023\u7d9a\u3067\u9078\u51fa\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u5bfe\u7b56\u304c\u96e3\u3057\u3044\u8105\u5a01\u3068\u3057\u3066\u5b9a\u7740\u3057\u3066\u3044\u308b\u70b9\u304c\u7279\u5fb4\u3067\u3059\u3002<\/p>\n<p>\u88ab\u5bb3\u306f\u5b9f\u969b\u306b\u767a\u751f\u3057\u3066\u3044\u307e\u3059\u3002IPA\u306e\u89e3\u8aac\u8cc7\u6599\u306f\u30012025\u5e741\u6708\u306b\u8d77\u304d\u305f\u4e8b\u4f8b\u3092\u53d6\u308a\u4e0a\u3052\u307e\u3057\u305f\u3002\u53d6\u5f15\u5148\u62c5\u5f53\u8005\u306e\u30e1\u30fc\u30eb\u30a2\u30ab\u30a6\u30f3\u30c8\u304c\u4e57\u3063\u53d6\u3089\u308c\u3001\u6b63\u898f\u306e\u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9\u304b\u3089\u5c4a\u3044\u305f\u865a\u507d\u306e\u652f\u6255\u4f9d\u983c\u306b\u5b50\u4f1a\u793e\u304c\u5fdc\u3058\u3066\u3057\u307e\u3044\u3001\u7d041,400\u4e07\u5186\u3092\u9001\u91d1\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u672c\u7269\u306e\u30a2\u30ab\u30a6\u30f3\u30c8\u3092\u4e57\u3063\u53d6\u3089\u308c\u308b\u3068\u3001\u9001\u4fe1\u5143\u306e\u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9\u3092\u898b\u308b\u3060\u3051\u3067\u306f\u6b63\u898f\u306e\u30e1\u30fc\u30eb\u3068\u533a\u5225\u304c\u3064\u304d\u307e\u305b\u3093\u3002\u6587\u9762\u3060\u3051\u3067\u5224\u65ad\u305b\u305a\u3001\u632f\u8fbc\u5148\u306e\u5909\u66f4\u4f9d\u983c\u305d\u306e\u3082\u306e\u3092\u5225\u306e\u624b\u6bb5\u3067\u78ba\u8a8d\u3059\u308b\u59ff\u52e2\u304c\u5fc5\u8981\u3067\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\">\u30dd\u30a4\u30f3\u30c8<\/p>\n<ul style=\"margin:0;padding-left:20px\">\n<li>\u30d5\u30a3\u30c3\u30b7\u30f3\u30b0\u306f\u3001\u6b63\u898f\u30b5\u30a4\u30c8\u3092\u88c5\u3046\u507d\u30b5\u30a4\u30c8\u3068\u3001\u305d\u3053\u3078\u8a98\u5c0e\u3059\u308b\u30b5\u30a4\u30c8\u306e\u7d44\u307f\u5408\u308f\u305b\u3067\u6210\u7acb\u3059\u308b<\/li>\n<li>\u8a98\u5c0e\u7d4c\u8def\u306f\u30e1\u30fc\u30eb\u3060\u3051\u3067\u306a\u304fSMS\uff08\u30b9\u30df\u30c3\u30b7\u30f3\u30b0\uff09\u3082\u3042\u308b<\/li>\n<li>\u7d44\u7e54\u3092\u72d9\u3046\u30d3\u30b8\u30cd\u30b9\u30e1\u30fc\u30eb\u8a50\u6b3a\u306f\u3001\u9001\u91d1\u3068\u3044\u3046\u5f62\u3067\u76f4\u63a5\u306e\u91d1\u92ad\u88ab\u5bb3\u306b\u3064\u306a\u304c\u308b<\/li>\n<\/ul>\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\/setsumei_2026_kojin.pdf\">IPA\u300c\u60c5\u5831\u30bb\u30ad\u30e5\u30ea\u30c6\u30a310\u5927\u8105\u5a01 2026\uff08\u500b\u4eba\uff09\u300d<\/a>\uff0f<a target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/www.ipa.go.jp\/security\/10threats\/omgdg50000008fi8-att\/kaisetsu_2026_soshiki.pdf\">IPA\u300c\u60c5\u5831\u30bb\u30ad\u30e5\u30ea\u30c6\u30a310\u5927\u8105\u5a01 2026 \u89e3\u8aac\u66f8\uff08\u7d44\u7e54\uff09\u300d<\/a><\/p>\n<h2>\u30d5\u30a3\u30c3\u30b7\u30f3\u30b0\u30b5\u30a4\u30c8\u306e\u5831\u544a\u4ef6\u6570\u306f2025\u5e7410\u301c12\u6708\u306b12,397\u4ef6\u3067\u30d4\u30fc\u30af\u3092\u3064\u3051\u305f<\/h2>\n<p><strong>\u30d5\u30a3\u30c3\u30b7\u30f3\u30b0\u30b5\u30a4\u30c8\u306e\u5831\u544a\u4ef6\u6570\u306f\u30012025\u5e74\u5f8c\u534a\u306b\u6025\u5897\u3057\u307e\u3057\u305f\u3002<\/strong> JPCERT\/CC\u306f\u3001\u56db\u534a\u671f\u3054\u3068\u306b\u300c\u56db\u534a\u671f\u30ec\u30dd\u30fc\u30c8\u300d\u3092\u516c\u8868\u3057\u3066\u3044\u307e\u3059\uff082025\u5e74\u5ea6\u304b\u3089\u306e\u8cc7\u6599\u540d\u3067\u3001\u4ee5\u524d\u306f\u300c\u30a4\u30f3\u30b7\u30c7\u30f3\u30c8\u5831\u544a\u5bfe\u5fdc\u30ec\u30dd\u30fc\u30c8\u300d\u3068\u547c\u3070\u308c\u3066\u3044\u307e\u3057\u305f\uff09\u3002\u3053\u308c\u3092\u4e26\u3079\u308b\u3068\u3001\u305d\u306e\u52d5\u304d\u304c\u306f\u3063\u304d\u308a\u3057\u307e\u3059\u3002<\/p>\n<p>2025\u5e7410\u301c12\u6708\u306e\u30d5\u30a3\u30c3\u30b7\u30f3\u30b0\u30b5\u30a4\u30c8\u306b\u95a2\u3059\u308b\u5831\u544a\u4ef6\u6570\u306f<mark>12,397\u4ef6<\/mark>\u3067\u3001\u96c6\u8a08\u671f\u9593\u4e2d\u306e\u6700\u591a\u3067\u3057\u305f\u3002\u76f4\u8fd1\u306e2026\u5e744\u301c6\u6708\u306f8,313\u4ef6\u3067\u30012\u56db\u534a\u671f\u9023\u7d9a\u306e\u6e1b\u5c11\u3067\u3059\u3002<\/p>\n<p><img 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\" src=\"https:\/\/venu-sys.co.jp\/jo-sys\/wp-content\/uploads\/sites\/2\/2026\/08\/chart-jpcert-trend.png\" \/><\/p>\n<table>\n<thead>\n<tr>\n<th>\u671f\u9593<\/th>\n<th>\u30d5\u30a3\u30c3\u30b7\u30f3\u30b0\u30b5\u30a4\u30c8\u306e\u5831\u544a\u4ef6\u6570<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>2023\u5e7410\u301c12\u6708<\/td>\n<td>4,473\u4ef6<\/td>\n<\/tr>\n<tr>\n<td>2024\u5e741\u301c3\u6708<\/td>\n<td>4,781\u4ef6<\/td>\n<\/tr>\n<tr>\n<td>2024\u5e744\u301c6\u6708<\/td>\n<td>5,025\u4ef6<\/td>\n<\/tr>\n<tr>\n<td>2024\u5e747\u301c9\u6708<\/td>\n<td>4,233\u4ef6<\/td>\n<\/tr>\n<tr>\n<td>2024\u5e7410\u301c12\u6708<\/td>\n<td>4,780\u4ef6<\/td>\n<\/tr>\n<tr>\n<td>2025\u5e741\u301c3\u6708<\/td>\n<td>5,267\u4ef6<\/td>\n<\/tr>\n<tr>\n<td>2025\u5e744\u301c6\u6708<\/td>\n<td>7,358\u4ef6<\/td>\n<\/tr>\n<tr>\n<td>2025\u5e747\u301c9\u6708<\/td>\n<td>9,063\u4ef6<\/td>\n<\/tr>\n<tr>\n<td>2025\u5e7410\u301c12\u6708<\/td>\n<td>12,397\u4ef6<\/td>\n<\/tr>\n<tr>\n<td>2026\u5e741\u301c3\u6708<\/td>\n<td>9,293\u4ef6<\/td>\n<\/tr>\n<tr>\n<td>2026\u5e744\u301c6\u6708<\/td>\n<td>8,313\u4ef6<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p style=\"font-size:13px;color:#777;margin:0.5em 0 1.5em\">\u51fa\u5178: <a target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/www.jpcert.or.jp\/qr\/2026\/QR_FY2025-Q3.pdf\">JPCERT\/CC\u300c\u56db\u534a\u671f\u30ec\u30dd\u30fc\u30c8\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<\/a>\u5404\u53f7\u3092\u3082\u3068\u306b\u4f5c\u6210<\/p>\n<p>\u3053\u306e\u63a8\u79fb\u304b\u3089\u8aad\u307f\u53d6\u308c\u308b\u306e\u306f\u3001\u5831\u544a\u4ef6\u6570\u304c2025\u5e74\u5f8c\u534a\u306b\u304b\u3051\u3066\u6025\u5897\u3057\u3001\u30d4\u30fc\u30af\u3092\u8d8a\u3048\u3066\u6e1b\u5c11\u306b\u8ee2\u3058\u305f\u3068\u3044\u3046\u70b9\u3067\u3059\u30022023\u5e7410\u301c12\u6708\u306e4,473\u4ef6\u304b\u30892025\u5e7410\u301c12\u6708\u306e12,397\u4ef6\u307e\u3067\u3001\u7d042\u5e74\u30672.8\u500d\u306b\u5897\u3048\u307e\u3057\u305f\u3002<\/p>\n<p>\u305d\u306e\u5f8c\u306f2026\u5e741\u301c3\u6708\u304c9,293\u4ef6\u30012026\u5e744\u301c6\u6708\u304c8,313\u4ef6\u3068\u30012\u56db\u534a\u671f\u9023\u7d9a\u3067\u6e1b\u3063\u3066\u3044\u307e\u3059\u3002\u30d4\u30fc\u30af\u304b\u3089\u306f3\u5272\u7a0b\u5ea6\u306e\u6e1b\u5c11\u3067\u3059\u304c\u30012024\u5e74\u307e\u3067\u306e\u6c34\u6e96\u3068\u6bd4\u3079\u308b\u3068\u306a\u304a\u9ad8\u3044\u72b6\u614b\u3067\u3059\u3002<\/p>\n<p>\u3053\u306e\u6e1b\u5c11\u304c\u4e00\u6642\u7684\u306a\u8abf\u6574\u306a\u306e\u304b\u3001\u5897\u52a0\u50be\u5411\u305d\u306e\u3082\u306e\u304c\u5909\u308f\u3063\u305f\u306e\u304b\u306f\u3001\u76f4\u8fd12\u56db\u534a\u671f\u306e\u30c7\u30fc\u30bf\u3060\u3051\u3067\u306f\u5224\u65ad\u3067\u304d\u307e\u305b\u3093\u3002\u8cc7\u6599\u540d\u306f2025\u5e74\u5ea6\u304b\u3089\u300c\u56db\u534a\u671f\u30ec\u30dd\u30fc\u30c8\u300d\u306b\u5909\u308f\u308a\u307e\u3057\u305f\u304c\u3001\u5404\u53f7\u306f\u540d\u79f0\u306e\u5909\u66f4\u3092\u307e\u305f\u3044\u3067\u524d\u56db\u534a\u671f\u30fb\u524d\u5e74\u540c\u671f\u306e\u4ef6\u6570\u3092\u6bd4\u8f03\u3057\u3066\u304a\u308a\u3001\u96c6\u8a08\u306e\u533a\u5206\u306f\u5909\u308f\u3063\u3066\u3044\u307e\u305b\u3093\u3002<\/p>\n<p>\u306a\u304a\u3001\u3053\u3053\u3067\u306e\u4ef6\u6570\u306fJPCERT\/CC\u306b\u5bc4\u305b\u3089\u308c\u305f\u5831\u544a\u306e\u6570\u3067\u3042\u308a\u3001\u56fd\u5185\u3067\u767a\u751f\u3057\u305f\u30d5\u30a3\u30c3\u30b7\u30f3\u30b0\u306e\u4ef6\u6570\u305d\u306e\u3082\u306e\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u5831\u544a\u306e\u5897\u6e1b\u306b\u306f\u3001\u653b\u6483\u306e\u91cf\u3060\u3051\u3067\u306a\u304f\u5831\u544a\u5236\u5ea6\u306e\u5468\u77e5\u5ea6\u3082\u5f71\u97ff\u3057\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.jpcert.or.jp\/qr\/2026\/QR_FY2025-Q3.pdf\">JPCERT\/CC\u300c\u56db\u534a\u671f\u30ec\u30dd\u30fc\u30c8\uff082025\u5e7410\u6708\u301c12\u6708\uff09\u300d<\/a>\uff0f<a target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/www.jpcert.or.jp\/qr\/2026\/QR_FY2026-Q1.pdf\">JPCERT\/CC\u300c\u56db\u534a\u671f\u30ec\u30dd\u30fc\u30c8\uff082026\u5e744\u6708\u301c6\u6708\uff09\u300d<\/a>\u307b\u304b\u5404\u53f7<\/p>\n<h2>\u4e0d\u6b63\u30a2\u30af\u30bb\u30b9\u306e\u624b\u53e3\u3068\u3057\u3066\u30d5\u30a3\u30c3\u30b7\u30f3\u30b0\u30b5\u30a4\u30c8\u304c\u4f7f\u308f\u308c\u308b\u30b1\u30fc\u30b9\u304c\u3042\u308b<\/h2>\n<p><strong>\u30d5\u30a3\u30c3\u30b7\u30f3\u30b0\u3067\u76d7\u307e\u308c\u305f\u8a8d\u8a3c\u60c5\u5831\u306f\u3001\u5b9f\u969b\u306b\u4e0d\u6b63\u30a2\u30af\u30bb\u30b9\u3078\u4f7f\u308f\u308c\u3066\u3044\u307e\u3059\u3002<\/strong> \u305d\u308c\u306f\u8b66\u5bdf\u5e81\u306e\u7d71\u8a08\u306b\u3082\u8868\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>2025\u5e74\u306e\u8b58\u5225\u7b26\u53f7\u7a83\u7528\u578b\u306e\u4e0d\u6b63\u30a2\u30af\u30bb\u30b9\u884c\u70ba\u306e\u691c\u6319\u4ef6\u6570\u306f399\u4ef6\u3067\u3057\u305f\u3002\u3046\u306177\u4ef6\u306f\u3001\u30d5\u30a3\u30c3\u30b7\u30f3\u30b0\u30b5\u30a4\u30c8\u3067\u5165\u624b\u3057\u305f\u8b58\u5225\u7b26\u53f7\u306b\u3088\u308b\u3082\u306e\u3067\u3059\u3002<\/p>\n<table>\n<thead>\n<tr>\n<th>2025\u5e74\u30fb\u8b58\u5225\u7b26\u53f7\u7a83\u7528\u578b\u306e\u4e0d\u6b63\u30a2\u30af\u30bb\u30b9\u884c\u70ba<\/th>\n<th>\u691c\u6319\u4ef6\u6570<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u5168\u4f53<\/td>\n<td>399\u4ef6<\/td>\n<\/tr>\n<tr>\n<td>\u3046\u3061 \u30d1\u30b9\u30ef\u30fc\u30c9\u306e\u8a2d\u5b9a\u30fb\u7ba1\u7406\u306e\u7518\u3055\u306b\u3064\u3051\u8fbc\u3093\u3067\u5165\u624b<\/td>\n<td>84\u4ef6<\/td>\n<\/tr>\n<tr>\n<td>\u3046\u3061 \u30d5\u30a3\u30c3\u30b7\u30f3\u30b0\u30b5\u30a4\u30c8\u304b\u3089\u5165\u624b<\/td>\n<td>77\u4ef6<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p style=\"font-size:13px;color:#777;margin:0.5em 0 1.5em\">\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\u30fb\u7dcf\u52d9\u5927\u81e3\u30fb\u7d4c\u6e08\u7523\u696d\u5927\u81e3\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>\u3092\u3082\u3068\u306b\u4f5c\u6210<\/p>\n<p>\u6700\u3082\u591a\u3044\u624b\u53e3\u306f\u3001\u30d1\u30b9\u30ef\u30fc\u30c9\u306e\u8a2d\u5b9a\u30fb\u7ba1\u7406\u306e\u7518\u3055\u306b\u3064\u3051\u8fbc\u3093\u306084\u4ef6\u3067\u3059\u3002\u30d5\u30a3\u30c3\u30b7\u30f3\u30b0\u7d4c\u7531\u306e77\u4ef6\u3068\u5408\u308f\u305b\u308b\u3068\u3001\u8a8d\u8a3c\u60c5\u5831\u305d\u306e\u3082\u306e\u3092\u72d9\u3046\u624b\u53e3\u304c\u4e0a\u4f4d\u3092\u5360\u3081\u3066\u3044\u308b\u72b6\u6cc1\u3067\u3059\u3002<a href=\"https:\/\/venu-sys.co.jp\/jo-sys\/8503\/\">\u30d1\u30b9\u30ef\u30fc\u30c9\u306e\u7ba1\u7406\u72b6\u6cc1<\/a>\u306e\u70b9\u691c\u306f\u3001\u30d5\u30a3\u30c3\u30b7\u30f3\u30b0\u5bfe\u7b56\u306e\u4e00\u74b0\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<p>\u4e2d\u5c0f\u4f01\u696d\u3067\u3082\u88ab\u5bb3\u306f\u8d77\u304d\u3066\u3044\u307e\u3059\u3002IPA\u306e\u8abf\u67fb\u306b\u3088\u308b\u3068\u3001\u56de\u7b54\u3057\u305f\u4e2d\u5c0f\u4f01\u696d\u7b49\u306e\u3046\u3061\u30012023\u5e74\u5ea6\u306b\u4e0d\u6b63\u30a2\u30af\u30bb\u30b9\u88ab\u5bb3\u3092\u53d7\u3051\u305f\u306e\u306f10.0%\u3067\u3057\u305f\u3002\u88ab\u5bb3\u3092\u53d7\u3051\u305f\u4f01\u696d\u306b\u624b\u53e3\u3092\u8907\u6570\u56de\u7b54\u3067\u5c0b\u306d\u308b\u3068\u3001\u300c\u8106\u5f31\u6027\u300d\u304c48.0%\u3067\u6700\u3082\u591a\u304f\u3001\u300cID\u30fb\u30d1\u30b9\u30ef\u30fc\u30c9\u306e\u4e0d\u6b63\u5229\u7528\u306b\u3088\u308b\u306a\u308a\u3059\u307e\u3057\u300d\u306e<mark>36.8%<\/mark>\u304c\u3053\u308c\u306b\u6b21\u304e\u307e\u3059\u3002<\/p>\n<p>\u306a\u304a\u3001\u7dcf\u52d9\u7701\u306e\u901a\u4fe1\u5229\u7528\u52d5\u5411\u8abf\u67fb\u3067\u306f\u30012025\u5e74\u6642\u70b9\u3067\u904e\u53bb1\u5e74\u9593\u306b\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u88ab\u5bb3\u3068\u3057\u3066\u300c\u4e0d\u6b63\u30a2\u30af\u30bb\u30b9\u300d\u3092\u6319\u3052\u305f\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u5229\u7528\u4f01\u696d\u306f4.1%\u3067\u3059\u3002\u8abf\u67fb\u3054\u3068\u306b\u6bcd\u96c6\u56e3\u3068\u8a2d\u554f\u304c\u9055\u3046\u305f\u3081\u3001\u6c34\u6e96\u306f\u305d\u306e\u307e\u307e\u6bd4\u8f03\u3067\u304d\u307e\u305b\u3093\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\u7d39\u4ecb\u3057\u305f\u6570\u5024\u306f\u3001\u30d5\u30a3\u30c3\u30b7\u30f3\u30b0\u5358\u4f53\u306e\u88ab\u5bb3\u7387\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u4f01\u696d\u898f\u6a21\u5225\u30fb\u696d\u7a2e\u5225\u306b\u30d5\u30a3\u30c3\u30b7\u30f3\u30b0\u88ab\u5bb3\u7387\u3092\u793a\u3057\u305f\u516c\u7684\u7d71\u8a08\u306f\u3001\u73fe\u6642\u70b9\u3067\u306f\u78ba\u8a8d\u3067\u304d\u3066\u3044\u307e\u305b\u3093\u3002IPA\u306e\u4e2d\u5c0f\u4f01\u696d\u8abf\u67fb\u306f\u4e2d\u5c0f\u4f01\u696d\u7b49\u3092\u5bfe\u8c61\u3068\u3057\u305f\u8abf\u67fb\u3067\u3042\u308a\u3001\u5927\u4f01\u696d\u3092\u542b\u3080\u5168\u4f53\u306e\u50be\u5411\u3068\u306f\u5206\u3051\u3066\u8aad\u3080\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u81ea\u793e\u306e\u88ab\u5bb3\u78ba\u7387\u3092\u63a8\u3057\u91cf\u308b\u76ee\u7684\u3067\u306f\u306a\u304f\u3001\u624b\u53e3\u306e\u50be\u5411\u3092\u628a\u63e1\u3059\u308b\u76ee\u7684\u3067\u4f7f\u3063\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\/main_content\/001059979.pdf\">\u56fd\u5bb6\u516c\u5b89\u59d4\u54e1\u4f1a\u30fb\u7dcf\u52d9\u5927\u81e3\u30fb\u7d4c\u6e08\u7523\u696d\u5927\u81e3\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>\uff0f<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>\uff0f<a target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/www.soumu.go.jp\/main_content\/001074768.pdf\">\u7dcf\u52d9\u7701\u300c\u4ee4\u548c7\u5e74\u901a\u4fe1\u5229\u7528\u52d5\u5411\u8abf\u67fb\u300d<\/a><\/p>\n<h2>\u30e1\u30fc\u30eb\u306e\u306a\u308a\u3059\u307e\u3057\u3092\u9632\u3050DMARC\u306e\u5c0e\u5165\u306f2025\u5e74\u6642\u70b9\u306737.2%<\/h2>\n<p><strong>\u9001\u4fe1\u5143\u3092\u507d\u3063\u305f\u30e1\u30fc\u30eb\u3092\u6280\u8853\u7684\u306b\u306f\u3058\u304f\u4ed5\u7d44\u307f\u306f\u3001\u307e\u3060\u5168\u4f53\u306b\u884c\u304d\u6e21\u3063\u3066\u3044\u307e\u305b\u3093\u3002<\/strong> \u4ee3\u8868\u4f8b\u304c\u3001DMARC\u3068\u3044\u3046\u9001\u4fe1\u30c9\u30e1\u30a4\u30f3\u8a8d\u8a3c\u6280\u8853\u3067\u3059\u3002<\/p>\n<p>\u7dcf\u52d9\u7701\u306e\u60c5\u5831\u901a\u4fe1\u767d\u66f8\u306b\u3088\u308b\u3068\u3001JP\u30c9\u30e1\u30a4\u30f3\u306eDMARC\u5c0e\u5165\u7387\u306f2025\u5e7412\u6708\u6642\u70b9\u3067<mark>37.2%<\/mark>\u3067\u3057\u305f\u30022022\u5e7412\u6708\u6642\u70b9\u306e2.7%\u304b\u3089\u306f\u5927\u304d\u304f\u4f38\u3073\u3066\u3044\u307e\u3059\u3002<\/p>\n<p><img decoding=\"async\" alt=\"JP\u30c9\u30e1\u30a4\u30f3\u306eDMARC\u5c0e\u5165\u7387\u306e\u63a8\u79fb\" src=\"https:\/\/venu-sys.co.jp\/jo-sys\/wp-content\/uploads\/sites\/2\/2026\/08\/chart-dmarc-trend.png\" \/><\/p>\n<table>\n<thead>\n<tr>\n<th>\u6642\u70b9<\/th>\n<th>JP\u30c9\u30e1\u30a4\u30f3\u306eDMARC\u5c0e\u5165\u7387<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>2022\u5e7412\u6708\u6642\u70b9<\/td>\n<td>2.7%<\/td>\n<\/tr>\n<tr>\n<td>2023\u5e7412\u6708\u6642\u70b9<\/td>\n<td>10.2%<\/td>\n<\/tr>\n<tr>\n<td>2024\u5e749\u6708\u6642\u70b9<\/td>\n<td>32.6%<\/td>\n<\/tr>\n<tr>\n<td>2025\u5e7412\u6708\u6642\u70b9<\/td>\n<td>37.2%<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p style=\"font-size:13px;color:#777;margin:0.5em 0 1.5em\">\u51fa\u5178: <a target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/www.soumu.go.jp\/johotsusintokei\/whitepaper\/ja\/r08\/html\/nd21a240.html\">\u7dcf\u52d9\u7701\u300c\u4ee4\u548c8\u5e74\u7248 \u60c5\u5831\u901a\u4fe1\u767d\u66f8\u300d<\/a>\u307b\u304b\u5404\u5e74\u7248\u3092\u3082\u3068\u306b\u4f5c\u6210<\/p>\n<p>\u3053\u306e\u63a8\u79fb\u304b\u3089\u8aad\u307f\u53d6\u308c\u308b\u306e\u306f\u3001\u5c0e\u5165\u7387\u304c\u4f38\u3073\u308b\u52e2\u3044\u304c\u920d\u3063\u3066\u3044\u308b\u70b9\u3067\u3059\u3002\u516c\u8868\u6642\u70b9\u3054\u3068\u306e\u5897\u52a0\u5e45\u306f\u30012022\u5e7412\u6708\u304b\u30892023\u5e7412\u6708\u304c7.5\u30dd\u30a4\u30f3\u30c8\u30012023\u5e7412\u6708\u304b\u30892024\u5e749\u6708\u304c22.4\u30dd\u30a4\u30f3\u30c8\u30012024\u5e749\u6708\u304b\u30892025\u5e7412\u6708\u304c4.6\u30dd\u30a4\u30f3\u30c8\u3067\u3059\u3002<\/p>\n<p>\u305f\u3060\u3057\u767d\u66f8\u304c\u793a\u3059\u6642\u70b9\u306e\u9593\u9694\u306f9\u304b\u6708\u304b\u308915\u304b\u6708\u307e\u3067\u3070\u3089\u3064\u3044\u3066\u304a\u308a\u3001\u540c\u3058\u9577\u3055\u306e\u671f\u9593\u3092\u305d\u308d\u3048\u305f\u6bd4\u8f03\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u3053\u308c\u306fJP\u30c9\u30e1\u30a4\u30f3\u5168\u4f53\u3067\u898b\u305f\u6570\u5024\u3067\u3042\u308a\u3001\u4f01\u696d\u5358\u4f4d\u306e\u5c0e\u5165\u7387\u3067\u3082\u3042\u308a\u307e\u305b\u3093\u30024\u5272\u5f31\u307e\u3067\u9054\u3057\u305f\u4e00\u65b9\u3001\u6b8b\u308a\u306e\u5c0e\u5165\u306f\u4eca\u5f8c\u3082\u7de9\u3084\u304b\u306b\u3057\u304b\u9032\u307e\u306a\u3044\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<p>\u306a\u304a\u3001DMARC\u304c\u9632\u3050\u306e\u306f\u3042\u304f\u307e\u3067\u81ea\u793e\u30c9\u30e1\u30a4\u30f3\u3092\u8a50\u79f0\u3057\u305f\u30e1\u30fc\u30eb\u3067\u3059\u3002\u7b2c\u4e09\u8005\u304c\u5225\u30c9\u30e1\u30a4\u30f3\u3067\u7528\u610f\u3057\u305f\u30d5\u30a3\u30c3\u30b7\u30f3\u30b0\u30b5\u30a4\u30c8\u305d\u306e\u3082\u306e\u3092\u6b62\u3081\u308b\u4ed5\u7d44\u307f\u3067\u306f\u306a\u3044\u305f\u3081\u3001\u4ed6\u306e\u5bfe\u7b56\u3068\u7d44\u307f\u5408\u308f\u305b\u3066\u8003\u3048\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u9001\u4fe1\u30c9\u30e1\u30a4\u30f3\u8a8d\u8a3c\u306b\u306fSPF\u3084DKIM\u3082\u3042\u308a\u3001<a href=\"https:\/\/venu-sys.co.jp\/jo-sys\/8849\/\">\u30e1\u30fc\u30eb\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3<\/a>\u306f\u8907\u6570\u306e\u4ed5\u7d44\u307f\u306e\u7d44\u307f\u5408\u308f\u305b\u3067\u8003\u3048\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.soumu.go.jp\/johotsusintokei\/whitepaper\/ja\/r08\/html\/nd21a240.html\">\u7dcf\u52d9\u7701\u300c\u4ee4\u548c8\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\">\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.soumu.go.jp\/johotsusintokei\/whitepaper\/ja\/r06\/html\/nd21a240.html\">\u7dcf\u52d9\u7701\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\/r05\/html\/nd24a240.html\">\u7dcf\u52d9\u7701\u300c\u4ee4\u548c5\u5e74\u7248 \u60c5\u5831\u901a\u4fe1\u767d\u66f8\u300d<\/a><\/p>\n<h2>\u60c5\u30b7\u30b9\u62c5\u5f53\u8005\u304c\u5b9f\u65bd\u3059\u3079\u304d\u5bfe\u7b56\u306f\u6280\u8853\u9762\u3068\u6559\u80b2\u9762\u306e\u4e21\u8f2a\u3067\u9032\u3081\u308b<\/h2>\n<p><mark>\u30d5\u30a3\u30c3\u30b7\u30f3\u30b0\u5bfe\u7b56\u306f\u3001\u6280\u8853\u9762\u3068\u6559\u80b2\u9762\u306e\u3069\u3061\u3089\u304b\u4e00\u65b9\u3067\u306f\u5b8c\u7d50\u3057\u307e\u305b\u3093\u3002<\/mark>\u653b\u6483\u304c\u5c4a\u304f\u7d4c\u8def\u3092\u6e1b\u3089\u3059\u6280\u8853\u5bfe\u7b56\u3068\u3001\u5c4a\u3044\u3066\u3057\u307e\u3063\u305f\u969b\u306b\u5f93\u696d\u54e1\u304c\u8aa4\u3089\u306a\u3044\u305f\u3081\u306e\u6559\u80b2\u3092\u3001\u540c\u6642\u306b\u9032\u3081\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<p>\u7406\u7531\u306f\u5358\u7d14\u3067\u3001\u30d5\u30a3\u30c3\u30b7\u30f3\u30b0\u306f\u5229\u7528\u8005\u672c\u4eba\u306b\u5165\u529b\u3055\u305b\u308b\u653b\u6483\u3060\u304b\u3089\u3067\u3059\u3002\u30d5\u30a3\u30eb\u30bf\u3067\u6b62\u3081\u5207\u308c\u306a\u304b\u3063\u305f1\u901a\u304c\u3001\u305d\u306e\u307e\u307e\u88ab\u5bb3\u306b\u3064\u306a\u304c\u308a\u307e\u3059\u3002<\/p>\n<p>\u3053\u3053\u304b\u3089\u306f\u3001\u9650\u3089\u308c\u305f\u4eba\u54e1\u3067\u3082\u7740\u624b\u3057\u3084\u3059\u3044\u9806\u756a\u3067\u3001\u6280\u8853\u9762\u3068\u6559\u80b2\u9762\u306e\u5177\u4f53\u7b56\u3092\u6574\u7406\u3057\u307e\u3059\u3002<\/p>\n<h3>\u6280\u8853\u7684\u5bfe\u7b56\u306fDMARC\u306a\u3069\u9001\u4fe1\u30c9\u30e1\u30a4\u30f3\u8a8d\u8a3c\u306e\u5c0e\u5165\u3092\u512a\u5148\u3059\u308b<\/h3>\n<p><strong>\u6280\u8853\u9762\u3067\u6700\u521d\u306b\u624b\u3092\u4ed8\u3051\u305f\u3044\u306e\u306f\u3001\u81ea\u793e\u30c9\u30e1\u30a4\u30f3\u306e\u9001\u4fe1\u30c9\u30e1\u30a4\u30f3\u8a8d\u8a3c\u306e\u8a2d\u5b9a\u3067\u3059\u3002<\/strong> \u8a2d\u5b9a\u306fDNS\u30ec\u30b3\u30fc\u30c9\u306e\u8ffd\u52a0\u304c\u4e2d\u5fc3\u3067\u3001\u7aef\u672b\u3084\u30a2\u30d7\u30ea\u306e\u5165\u308c\u66ff\u3048\u3092\u4f34\u3044\u307e\u305b\u3093\u3002<\/p>\n<p>\u524d\u8ff0\u306e\u3068\u304a\u308a\u3001JP\u30c9\u30e1\u30a4\u30f3\u306eDMARC\u5c0e\u5165\u7387\u306f2025\u5e7412\u6708\u6642\u70b9\u306737.2%\u3067\u3059\u3002\u88cf\u3092\u8fd4\u305b\u3070\u3001DMARC\u3092\u8a2d\u5b9a\u3057\u3066\u3044\u306a\u3044JP\u30c9\u30e1\u30a4\u30f3\u304c6\u5272\u5f37\u3042\u308a\u3001\u305d\u308c\u3089\u306e\u30c9\u30e1\u30a4\u30f3\u3092\u88c5\u3063\u305f\u30e1\u30fc\u30eb\u304c\u53d6\u5f15\u5148\u306b\u5c4a\u3044\u3066\u3082\u3001\u53d7\u4fe1\u5074\u3067\u6a5f\u68b0\u7684\u306b\u306f\u3058\u3051\u306a\u3044\u72b6\u614b\u304c\u6b8b\u3063\u3066\u3044\u308b\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<p>\u81ea\u793e\u304c\u672a\u5c0e\u5165\u306a\u3089\u3001\u307e\u305aSPF\u3068DKIM\u306e\u8a2d\u5b9a\u72b6\u6cc1\u3092\u78ba\u8a8d\u3057\u3001\u305d\u306e\u3046\u3048\u3067DMARC\u3092\u30e2\u30cb\u30bf\u30ea\u30f3\u30b0\u30e2\u30fc\u30c9\u304b\u3089\u59cb\u3081\u308b\u306e\u304c\u73fe\u5b9f\u7684\u3067\u3059\u3002\u3044\u304d\u306a\u308a\u62d2\u5426\u8a2d\u5b9a\u306b\u3059\u308b\u3068\u3001\u6b63\u898f\u306e\u30e1\u30fc\u30eb\u307e\u3067\u5c4a\u304b\u306a\u304f\u306a\u308b\u6050\u308c\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<p>\u53d7\u4fe1\u5074\u306e\u5bfe\u7b56\u3068\u3057\u3066\u306f\u3001\u5916\u90e8\u304b\u3089\u5c4a\u3044\u305f\u30e1\u30fc\u30eb\u306b\u8b66\u544a\u30e9\u30d9\u30eb\u3092\u4ed8\u3051\u308b\u8a2d\u5b9a\u3082\u6709\u52b9\u3067\u3059\u3002\u5f93\u696d\u54e1\u304c\u5224\u65ad\u3059\u308b\u524d\u306b\u3001\u4e00\u76ee\u3067\u5916\u90e8\u7531\u6765\u3068\u5206\u304b\u308b\u72b6\u614b\u3092\u4f5c\u308c\u307e\u3059\u3002<\/p>\n<h3>\u5f93\u696d\u54e1\u6559\u80b2\u306fID\u30fb\u30d1\u30b9\u30ef\u30fc\u30c9\u306e\u53d6\u308a\u6271\u3044\u30eb\u30fc\u30eb\u306e\u5468\u77e5\u304b\u3089\u59cb\u3081\u308b<\/h3>\n<p><strong>\u6559\u80b2\u9762\u3067\u306f\u3001\u8a8d\u8a3c\u60c5\u5831\u306e\u6271\u3044\u306b\u7d5e\u3063\u305f\u30eb\u30fc\u30eb\u306e\u5468\u77e5\u304c\u3001\u8cbb\u7528\u3092\u304b\u3051\u305a\u306b\u59cb\u3081\u3089\u308c\u308b\u51fa\u767a\u70b9\u306b\u306a\u308a\u307e\u3059\u3002<\/strong> \u76d7\u307e\u308c\u3066\u56f0\u308b\u3082\u306e\u304c\u4f55\u304b\u3092\u5168\u54e1\u304c\u7406\u89e3\u3057\u3066\u3044\u306a\u3044\u3068\u3001\u6280\u8853\u5bfe\u7b56\u306e\u52b9\u679c\u3082\u534a\u6e1b\u3057\u307e\u3059\u3002<\/p>\n<p>\u6839\u62e0\u306fIPA\u306e\u4e2d\u5c0f\u4f01\u696d\u5411\u3051\u5b9f\u614b\u8abf\u67fb\u3067\u3059\u30022023\u5e74\u5ea6\u306b\u4e0d\u6b63\u30a2\u30af\u30bb\u30b9\u88ab\u5bb3\u3092\u53d7\u3051\u305f\u4e2d\u5c0f\u4f01\u696d\u7b49\u3067\u306f\u3001\u624b\u53e3\u306e36.8%\u304c\u300cID\u30fb\u30d1\u30b9\u30ef\u30fc\u30c9\u306e\u4e0d\u6b63\u5229\u7528\u306b\u3088\u308b\u306a\u308a\u3059\u307e\u3057\u300d\u3067\u3057\u305f\u3002\u6700\u591a\u306e\u300c\u8106\u5f31\u6027\u300d\u3078\u306e\u5bfe\u5fdc\u306f\u30d1\u30c3\u30c1\u9069\u7528\u306a\u3069IT\u904b\u7528\u5074\u306e\u8ab2\u984c\u3067\u3059\u304c\u3001\u8a8d\u8a3c\u60c5\u5831\u306e\u8a50\u53d6\u3084\u4f7f\u3044\u56de\u3057\u306b\u306f\u3001\u5f93\u696d\u54e1\u306e\u884c\u52d5\u3067\u6e1b\u3089\u305b\u308b\u90e8\u5206\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<p>\u4f1d\u3048\u308b\u3079\u304d\u306f\u884c\u52d5\u30ec\u30d9\u30eb\u306e\u30eb\u30fc\u30eb\u3067\u3059\u3002\u30e1\u30fc\u30eb\u5185\u306e\u30ea\u30f3\u30af\u304b\u3089\u30ed\u30b0\u30a4\u30f3\u753b\u9762\u306b\u5165\u3089\u306a\u3044\u3001\u30d1\u30b9\u30ef\u30fc\u30c9\u3092\u4ed6\u30b5\u30fc\u30d3\u30b9\u3068\u4f7f\u3044\u56de\u3055\u306a\u3044\u3001\u3068\u3044\u30462\u70b9\u3092\u307e\u305a\u5fb9\u5e95\u3057\u307e\u3059\u3002\u52a0\u3048\u3066\u3001\u5fc3\u5f53\u305f\u308a\u306e\u306a\u3044\u591a\u8981\u7d20\u8a8d\u8a3c\u306e\u627f\u8a8d\u8981\u6c42\u306f\u62d2\u5426\u3059\u308b\u3088\u3046\u5468\u77e5\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\">\u30dd\u30a4\u30f3\u30c8<\/p>\n<ul style=\"margin:0;padding-left:20px\">\n<li>\u6280\u8853\u9762\u306f\u81ea\u793e\u30c9\u30e1\u30a4\u30f3\u306eSPF\u30fbDKIM\u78ba\u8a8d\u304b\u3089DMARC\u3078\u6bb5\u968e\u7684\u306b\u9032\u3081\u308b<\/li>\n<li>\u53d7\u4fe1\u30e1\u30fc\u30eb\u306b\u5916\u90e8\u7531\u6765\u3092\u793a\u3059\u30e9\u30d9\u30eb\u3092\u4ed8\u3051\u3001\u5224\u65ad\u306e\u624b\u304c\u304b\u308a\u3092\u5897\u3084\u3059<\/li>\n<li>\u6559\u80b2\u9762\u306fID\u30fb\u30d1\u30b9\u30ef\u30fc\u30c9\u306e\u53d6\u308a\u6271\u3044\u3068\u591a\u8981\u7d20\u8a8d\u8a3c\u306e\u627f\u8a8d\u30eb\u30fc\u30eb\u306b\u7d5e\u3063\u3066\u5468\u77e5\u3059\u308b<\/li>\n<li>\u5e741\u56de\u306e\u96c6\u5408\u7814\u4fee\u3060\u3051\u306b\u305b\u305a\u3001\u5165\u793e\u6642\u3068\u5b9a\u671f\u306e\u7e70\u308a\u8fd4\u3057\u3067\u5b9a\u7740\u3055\u305b\u308b<\/li>\n<\/ul>\n<\/div>\n<p>\u4e00\u5ea6\u8aac\u660e\u3057\u305f\u3060\u3051\u3067\u306f\u884c\u52d5\u306f\u5909\u308f\u308a\u307e\u305b\u3093\u3002\u3068\u306f\u3044\u3048\u3001\u5c11\u4eba\u6570\u306e\u60c5\u30b7\u30b9\u304c\u6559\u6750\u3092\u4f5c\u308a\u3001\u5bfe\u8c61\u8005\u3092\u7ba1\u7406\u3057\u3001\u53d7\u8b1b\u72b6\u6cc1\u307e\u3067\u8ffd\u3044\u304b\u3051\u308b\u306e\u306f\u8ca0\u62c5\u304c\u5927\u304d\u3044\u306e\u304c\u5b9f\u60c5\u3067\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.soumu.go.jp\/johotsusintokei\/whitepaper\/ja\/r08\/html\/nd21a240.html\">\u7dcf\u52d9\u7701\u300c\u4ee4\u548c8\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\">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><\/p>\n<h2>\u307e\u3068\u3081\uff5c\u4e00\u6b21\u30c7\u30fc\u30bf\u306b\u57fa\u3065\u3044\u3066\u5bfe\u7b56\u306e\u512a\u5148\u9806\u4f4d\u3092\u3064\u3051\u308b<\/h2>\n<p><strong>\u30d5\u30a3\u30c3\u30b7\u30f3\u30b0\u5bfe\u7b56\u306e\u512a\u5148\u9806\u4f4d\u306f\u3001\u516c\u8868\u3055\u308c\u3066\u3044\u308b\u6570\u5024\u304b\u3089\u7d44\u307f\u7acb\u3066\u3089\u308c\u307e\u3059\u3002<\/strong> \u3053\u306e\u8a18\u4e8b\u3067\u898b\u305f2\u3064\u306e\u4e8b\u5b9f\u304c\u3001\u305d\u306e\u624b\u304c\u304b\u308a\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<p>\u3072\u3068\u3064\u306f\u3001JPCERT\/CC\u3078\u306e\u30d5\u30a3\u30c3\u30b7\u30f3\u30b0\u30b5\u30a4\u30c8\u5831\u544a\u4ef6\u6570\u3067\u3059\u30022025\u5e7410\u301c12\u6708\u306b12,397\u4ef6\u3067\u30d4\u30fc\u30af\u3092\u3064\u3051\u3001\u76f4\u8fd1\u306e2026\u5e744\u301c6\u6708\u306f8,313\u4ef6\u307e\u3067\u6e1b\u308a\u307e\u3057\u305f\u3002\u6e1b\u5c11\u306b\u8ee2\u3058\u305f\u3068\u306f\u3044\u3048\u30012024\u5e74\u307e\u3067\u306e\u6c34\u6e96\u3068\u6bd4\u3079\u308b\u3068\u306a\u304a\u9ad8\u3044\u72b6\u614b\u3067\u3059\u3002<\/p>\n<p>\u3082\u3046\u3072\u3068\u3064\u306f\u3001DMARC\u306eJP\u30c9\u30e1\u30a4\u30f3\u5c0e\u5165\u7387\u3067\u3059\u30022025\u5e7412\u6708\u6642\u70b9\u306737.2%\u306b\u3068\u3069\u307e\u308a\u3001\u4f38\u3073\u308b\u52e2\u3044\u3082\u920d\u5316\u3057\u3066\u3044\u307e\u3059\u3002DMARC\u3092\u8a2d\u5b9a\u3057\u3066\u3044\u306a\u3044JP\u30c9\u30e1\u30a4\u30f3\u306f\u3001\u307e\u30606\u5272\u5f37\u3042\u308a\u307e\u3059\u3002<\/p>\n<p>\u653b\u6483\u306e\u6c34\u6e96\u304c\u4e0b\u304c\u308a\u304d\u3063\u3066\u3044\u306a\u3044\u4e00\u65b9\u3067\u9632\u5fa1\u306e\u666e\u53ca\u30da\u30fc\u30b9\u306f\u920d\u3063\u3066\u3044\u308b\u4ee5\u4e0a\u3001\u6280\u8853\u9762\u306e\u8a2d\u5b9a\u3068\u5f93\u696d\u54e1\u6559\u80b2\u306e\u4e21\u65b9\u3092\u9032\u3081\u308b\u307b\u304b\u3042\u308a\u307e\u305b\u3093\u3002\u307e\u305a\u306f\u81ea\u793e\u30c9\u30e1\u30a4\u30f3\u306e\u8a8d\u8a3c\u8a2d\u5b9a\u306e\u78ba\u8a8d\u3068\u3001ID\u30fb\u30d1\u30b9\u30ef\u30fc\u30c9\u306e\u53d6\u308a\u6271\u3044\u30eb\u30fc\u30eb\u306e\u5468\u77e5\u304b\u3089\u7740\u624b\u3057\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\/qr\/2026\/QR_FY2026-Q1.pdf\">JPCERT\/CC\u300c\u56db\u534a\u671f\u30ec\u30dd\u30fc\u30c8\uff082026\u5e744\u6708\u301c6\u6708\uff09\u300d<\/a>\uff0f<a target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/www.soumu.go.jp\/johotsusintokei\/whitepaper\/ja\/r08\/html\/nd21a240.html\">\u7dcf\u52d9\u7701\u300c\u4ee4\u548c8\u5e74\u7248 \u60c5\u5831\u901a\u4fe1\u767d\u66f8\u300d<\/a><\/p>\n<h2>\u60c5\u30b7\u30b9\u306e\u6559\u80b2\u696d\u52d9\u3092\u4ed5\u7d44\u307f\u306b\u3059\u308b\u300c\u60c5\u30b7\u30b9\u30ab\u30ec\u30c3\u30b8\u300d<\/h2>\n<p style=\"text-align:center;margin:1.8em 0\"><a href=\"https:\/\/www.josys-college.com\/\" target=\"_blank\" rel=\"noopener noreferrer\"><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\" style=\"max-width:100%;height:auto\"><\/a><\/p>\n<p>\u30d5\u30a3\u30c3\u30b7\u30f3\u30b0\u5bfe\u7b56\u3067\u306f\u3001\u5f93\u696d\u54e1\u4e00\u4eba\u3072\u3068\u308a\u306e\u884c\u52d5\u304c\u7d50\u679c\u3092\u5de6\u53f3\u3057\u307e\u3059\u3002\u3068\u306f\u3044\u3048\u3001\u6559\u6750\u3065\u304f\u308a\u304b\u3089\u53d7\u8b1b\u7ba1\u7406\u307e\u3067\u60c5\u30b7\u30b9\u304c\u62b1\u3048\u8fbc\u3080\u3068\u3001\u901a\u5e38\u696d\u52d9\u3092\u5727\u8feb\u3057\u3066\u3057\u307e\u3044\u307e\u3059\u3002<\/p>\n<p>\u60c5\u30b7\u30b9\u30ab\u30ec\u30c3\u30b8\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\u6570\u5206\u306e\u52d5\u753b\u3068\u5c0f\u30c6\u30b9\u30c8\u3092\u7d44\u307f\u5408\u308f\u305b\u3001\u77ed\u3044\u6642\u9593\u3067\u5b66\u3079\u308b\u5f62\u306b\u307e\u3068\u3081\u3066\u3044\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\u9593\u6642\u9593\u306b\u5b66\u7fd2\u3067\u304d\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\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\u8acb\u6c42\u66f8\u6255\u3044\u306b\u3082\u5bfe\u5fdc\u3057\u3066\u3044\u307e\u3059\u3002\u521d\u671f\u8a2d\u5b9a\u306f\u7d0410\u5206\u3067\u5b8c\u4e86\u3059\u308b\u305f\u3081\u3001\u307e\u305a\u306f\u5c0f\u3055\u304f\u59cb\u3081\u3066\u904b\u7528\u306b\u5408\u3046\u304b\u3092\u78ba\u304b\u3081\u3089\u308c\u307e\u3059\u3002<\/p>\n<p style=\"text-align:center;margin:1.8em 0\"><a href=\"https:\/\/www.josys-college.com\/\" target=\"_blank\" rel=\"noopener noreferrer\" style=\"display:inline-block;background:#2d4f8f;color:#fff;font-weight:700;padding:14px 36px;border-radius:6px;text-decoration:none\">\u60c5\u30b7\u30b9\u30ab\u30ec\u30c3\u30b8\u306e\u8a73\u7d30\u3092\u898b\u308b<\/a><\/p>\n<p>\u203b\u51fa\u5178<br \/>\n&#8211; <a target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/www.jpcert.or.jp\/qr\/2026\/QR_FY2026-Q1.pdf\">JPCERT\/CC\u300c\u56db\u534a\u671f\u30ec\u30dd\u30fc\u30c8\uff082026\u5e744\u6708\u301c6\u6708\uff09\u300d<\/a><br \/>\n&#8211; <a target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/www.jpcert.or.jp\/qr\/2026\/QR_FY2025-Q4.pdf\">JPCERT\/CC\u300c\u56db\u534a\u671f\u30ec\u30dd\u30fc\u30c8\uff082026\u5e741\u6708\u301c3\u6708\uff09\u300d<\/a><br \/>\n&#8211; <a target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/www.jpcert.or.jp\/qr\/2026\/QR_FY2025-Q3.pdf\">JPCERT\/CC\u300c\u56db\u534a\u671f\u30ec\u30dd\u30fc\u30c8\uff082025\u5e7410\u6708\u301c12\u6708\uff09\u300d<\/a><br \/>\n&#8211; <a target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/www.jpcert.or.jp\/qr\/2025\/QR_FY2025-Q2.pdf\">JPCERT\/CC\u300c\u56db\u534a\u671f\u30ec\u30dd\u30fc\u30c8\uff082025\u5e747\u6708\u301c9\u6708\uff09\u300d<\/a><br \/>\n&#8211; <a target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/www.jpcert.or.jp\/qr\/2025\/QR_FY2025-Q1.pdf\">JPCERT\/CC\u300c\u56db\u534a\u671f\u30ec\u30dd\u30fc\u30c8\uff082025\u5e744\u6708\u301c6\u6708\uff09\u300d<\/a><br \/>\n&#8211; <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\uff082024\u5e74\u5ea6\u7b2c4\u56db\u534a\u671f\uff09\u300d<\/a><br \/>\n&#8211; <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\uff082024\u5e74\u5ea6\u7b2c3\u56db\u534a\u671f\uff09\u300d<\/a><br \/>\n&#8211; <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\uff082024\u5e74\u5ea6\u7b2c2\u56db\u534a\u671f\uff09\u300d<\/a><br \/>\n&#8211; <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\uff082024\u5e74\u5ea6\u7b2c1\u56db\u534a\u671f\uff09\u300d<\/a><br \/>\n&#8211; <a target=\"_blank\" rel=\"noopener noreferrer\" 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