{"id":11356,"date":"2026-11-02T07:26:19","date_gmt":"2026-11-01T22:26:19","guid":{"rendered":"https:\/\/venu-sys.co.jp\/jo-sys\/?p=11356"},"modified":"2026-11-02T07:26:19","modified_gmt":"2026-11-01T22:26:19","slug":"clickjacking-toha","status":"publish","type":"post","link":"https:\/\/venu-sys.co.jp\/jo-sys\/11356\/","title":{"rendered":"\u3010IPA\u30fb\u7dcf\u52d9\u7701\u30c7\u30fc\u30bf\u3011\u30af\u30ea\u30c3\u30af\u30b8\u30e3\u30c3\u30ad\u30f3\u30b0\u3068\u306f\uff5c\u5c4a\u51fa\u306f2011\u5e74\u958b\u59cb\u3001\u30bd\u30d5\u30c8\u88fd\u54c1\u306f2014\u5e74\u307e\u30670\u4ef6"},"content":{"rendered":"<p>\u300c\u30af\u30ea\u30c3\u30af\u30b8\u30e3\u30c3\u30ad\u30f3\u30b0\u300d\u306f\u8106\u5f31\u6027\u8a3a\u65ad\u306e\u5831\u544a\u66f8\u306a\u3069\u3067\u898b\u304b\u3051\u308b\u8a00\u8449\u3067\u3059\u304c\u3001\u4e2d\u8eab\u306f\u30a4\u30e1\u30fc\u30b8\u3057\u306b\u304f\u3044\u3067\u3059\u3088\u306d\u3002<\/p>\n<ul>\n<li>\u900f\u660e\u306a\u30dc\u30bf\u30f3\u3067\u3060\u307e\u3059\u4ed5\u7d44\u307f\u304c\u5206\u304b\u3089\u306a\u3044<\/li>\n<li>CSRF\u3068\u306e\u9055\u3044\u3092\u8aac\u660e\u3067\u304d\u306a\u3044<\/li>\n<li>\u81ea\u793e\u30b5\u30a4\u30c8\u306e\u5bfe\u7b56\u306e\u78ba\u304b\u3081\u65b9\u304c\u5206\u304b\u3089\u306a\u3044<\/li>\n<\/ul>\n<p>\u7d50\u8ad6\u304b\u3089\u8a00\u3046\u3068\u3001\u30af\u30ea\u30c3\u30af\u30b8\u30e3\u30c3\u30ad\u30f3\u30b0\u306f\u3001\u900f\u660e\u306b\u3057\u305f\u6b63\u898f\u30b5\u30a4\u30c8\u3092\u7f60\u30da\u30fc\u30b8\u306b\u91cd\u306d\u3001\u30ed\u30b0\u30a4\u30f3\u4e2d\u306e\u5229\u7528\u8005\u306b\u610f\u56f3\u3057\u306a\u3044\u30af\u30ea\u30c3\u30af\u3092\u3055\u305b\u308b\u653b\u6483\u3067\u3059\u3002\u5bfe\u7b56\u306e\u4e2d\u5fc3\u306f\u3001X-Frame-Options\u306a\u3069\u3067\u81ea\u793e\u30da\u30fc\u30b8\u306e\u57cb\u3081\u8fbc\u307f\u3092\u9632\u3050\u3053\u3068\u3067\u3059\u3002<\/p>\n<p>\u3053\u306e\u653b\u6483\u306f\u5c4a\u51fa\u7d71\u8a08\u306b\u8868\u308c\u306b\u304f\u304f\u3001\u5bfe\u7b56\u306e\u6709\u7121\u306f\u30b5\u30a4\u30c8\u3054\u3068\u306e\u8a2d\u5b9a\u3067\u6c7a\u307e\u308a\u307e\u3059\u3002WAF\u306e\u5c0e\u5165\u72b6\u6cc1\u304b\u3089\u3082\u5bfe\u7b56\u6e08\u307f\u304b\u306f\u5224\u65ad\u3067\u304d\u307e\u305b\u3093\u3002<\/p>\n<p><strong>\u3053\u306e\u8a18\u4e8b\u306e\u30dd\u30a4\u30f3\u30c8<\/strong><\/p>\n<ul>\n<li>\u900f\u660e\u306b\u3057\u305f\u6b63\u898f\u30b5\u30a4\u30c8\u306e\u4e0a\u3067\u30af\u30ea\u30c3\u30af\u3055\u305b\u308b\u653b\u6483\u3067\u3059<\/li>\n<li>IPA\u306e\u521d\u53d7\u4ed8\u306f2011\u5e74\u3067\u3001\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u88fd\u54c1\u306e\u5c4a\u51fa\u306f2014\u5e74\u7b2c4\u56db\u534a\u671f\u307e\u3067\u306e\u7d2f\u8a08\u30670\u4ef6\u3067\u3059\uff08\u51fa\u5178: <a target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/www.ipa.go.jp\/security\/vuln\/websecurity\/clickjacking.html\">IPA<\/a>\uff09<\/li>\n<li>WAF\u5c0e\u5165\u4f01\u696d\u306f2025\u5e74\u306719.5%\uff08\u5e38\u7528\u96c7\u7528\u8005100\u4eba\u4ee5\u4e0a\u306e\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u5229\u7528\u4f01\u696d\u3002\u51fa\u5178: <a target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/www.soumu.go.jp\/main_content\/001074768.pdf\">\u7dcf\u52d9\u7701<\/a>\uff09\u3067\u3059\u304c\u3001\u5bfe\u7b56\u306e\u5b9f\u65bd\u306f\u610f\u5473\u3057\u307e\u305b\u3093<\/li>\n<\/ul>\n<h2>\u30af\u30ea\u30c3\u30af\u30b8\u30e3\u30c3\u30ad\u30f3\u30b0\u306f\u3001\u900f\u660e\u306b\u3057\u305f\u6b63\u898f\u30b5\u30a4\u30c8\u306e\u4e0a\u3067\u5229\u7528\u8005\u306b\u610f\u56f3\u3057\u306a\u3044\u30af\u30ea\u30c3\u30af\u3092\u3055\u305b\u308b\u653b\u6483<\/h2>\n<p><img decoding=\"async\" alt=\"\u900f\u660e\u306a\u30dc\u30bf\u30f3\u306e\u4ed5\u7d44\u307f\" src=\"https:\/\/venu-sys.co.jp\/jo-sys\/wp-content\/uploads\/sites\/2\/2026\/11\/h2-1-1.png\" \/><\/p>\n<p>\u30af\u30ea\u30c3\u30af\u30b8\u30e3\u30c3\u30ad\u30f3\u30b0\u306f\u3001<strong>\u5229\u7528\u8005\u306b\u898b\u3048\u3066\u3044\u308b\u30dc\u30bf\u30f3\u3068\u306f\u5225\u306e\u30dc\u30bf\u30f3\u3092\u3001\u6c17\u4ed8\u304b\u306a\u3044\u3046\u3061\u306b\u62bc\u3055\u305b\u308b\u653b\u6483<\/strong>\u3067\u3059\u3002\u82f1\u8a9e\u306e clickjacking \u306f\u3001click\uff08\u30af\u30ea\u30c3\u30af\uff09\u3068 hijacking\uff08\u4e57\u3063\u53d6\u308a\uff09\u3092\u7d44\u307f\u5408\u308f\u305b\u305f\u8a00\u8449\u3067\u3059\u3002<\/p>\n<p>\u753b\u9762\u306e\u898b\u305f\u76ee\u3092\u507d\u88c5\u3059\u308b\u3053\u3068\u304b\u3089\u3001\u300cUI\u30ec\u30c3\u30c9\u30ec\u30c3\u30b7\u30f3\u30b0\u300d\u3068\u547c\u3070\u308c\u308b\u3053\u3068\u3082\u3042\u308a\u307e\u3059\u3002Web\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306e<a href=\"https:\/\/venu-sys.co.jp\/jo-sys\/8758\/\">\u8106\u5f31\u6027<\/a>\u3092\u60aa\u7528\u3059\u308b\u653b\u6483\u306e\u4e00\u3064\u3067\u3059\u3002\u3053\u3053\u3067\u306f\u3001\u653b\u6483\u306e\u6d41\u308c\u3001\u88ab\u5bb3\u306e\u7bc4\u56f2\u3001CSRF\u3068\u306e\u9055\u3044\u306e\u9806\u306b\u898b\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n<h3>\u653b\u6483\u8005\u306f\u7f60\u30b5\u30a4\u30c8\u306e\u4e0a\u306b\u6b63\u898f\u30b5\u30a4\u30c8\u3092\u900f\u660e\u306a\u72b6\u614b\u3067\u91cd\u306d\u3001\u898b\u3048\u3066\u3044\u308b\u30dc\u30bf\u30f3\u3068\u306f\u5225\u306e\u30dc\u30bf\u30f3\u3092\u62bc\u3055\u305b\u308b<\/h3>\n<p>\u30af\u30ea\u30c3\u30af\u30b8\u30e3\u30c3\u30ad\u30f3\u30b0\u306e\u8981\u70b9\u306f\u3001<strong>\u6b63\u898f\u30b5\u30a4\u30c8\u3092\u900f\u660e\u306b\u3057\u3066\u3001\u7f60\u30b5\u30a4\u30c8\u306e\u507d\u30dc\u30bf\u30f3\u306e\u771f\u4e0a\u306b\u91cd\u306d\u308b\u3053\u3068<\/strong>\u3067\u3059\u3002\u653b\u6483\u306f\u6b21\u306e4\u6bb5\u968e\u3067\u9032\u307f\u307e\u3059\u3002<\/p>\n<p><img decoding=\"async\" alt=\"\u30af\u30ea\u30c3\u30af\u30b8\u30e3\u30c3\u30ad\u30f3\u30b0\u306e\u91cd\u306d\u5408\u308f\u305b\u306e\u6982\u5ff5\u56f3\uff08\u7f60\u30b5\u30a4\u30c8\u306e\u507d\u30dc\u30bf\u30f3\u3068\u3001\u900f\u660e\u5316\u3057\u305f\u6b63\u898f\u30b5\u30a4\u30c8\u306e\u672c\u7269\u306e\u30dc\u30bf\u30f3\u304c\u540c\u3058\u4f4d\u7f6e\u306b\u91cd\u306a\u308b\uff09\" src=\"https:\/\/venu-sys.co.jp\/jo-sys\/wp-content\/uploads\/sites\/2\/2026\/11\/chart3-concept.png\" \/><\/p>\n<ol>\n<li>\u5229\u7528\u8005\u304c\u3001\u6a19\u7684\u3068\u306a\u308bWeb\u30b5\u30a4\u30c8\u306b\u30ed\u30b0\u30a4\u30f3\u3057\u3066\u3044\u308b<\/li>\n<li>\u653b\u6483\u8005\u304c\u3001\u30e1\u30fc\u30eb\u3084SNS\u306e\u6295\u7a3f\u3067\u5229\u7528\u8005\u3092\u7f60\u30b5\u30a4\u30c8\u3078\u8a98\u5c0e\u3059\u308b<\/li>\n<li>\u7f60\u30b5\u30a4\u30c8\u304c\u6a19\u7684\u30b5\u30a4\u30c8\u3092\u8aad\u307f\u8fbc\u307f\u3001\u900f\u660e\u306b\u3057\u3066\u300c\u30d7\u30ec\u30bc\u30f3\u30c8\u306b\u5fdc\u52df\u300d\u306a\u3069\u306e\u507d\u30dc\u30bf\u30f3\u306e\u771f\u4e0a\u306b\u91cd\u306d\u308b<\/li>\n<li>\u5229\u7528\u8005\u306f\u507d\u30dc\u30bf\u30f3\u3092\u62bc\u3057\u305f\u3064\u3082\u308a\u3067\u3082\u3001\u5b9f\u969b\u306b\u306f\u6a19\u7684\u30b5\u30a4\u30c8\u306e\u30dc\u30bf\u30f3\u3092\u62bc\u3057\u3066\u3044\u308b<\/li>\n<\/ol>\n<p>3\u306e\u8aad\u307f\u8fbc\u307f\u306b\u306f\u3001iframe\u3068\u3044\u3046\u4ed5\u7d44\u307f\u304c\u4f7f\u308f\u308c\u307e\u3059\u3002iframe\u306f\u3001\u3042\u308b\u30da\u30fc\u30b8\u306e\u4e2d\u306b\u3001\u307b\u304b\u306e\u30b5\u30a4\u30c8\u306e\u30da\u30fc\u30b8\u3092\u57cb\u3081\u8fbc\u3093\u3067\u8868\u793a\u3059\u308b\u6a5f\u80fd\u3067\u3059\u3002<\/p>\n<p>\u653b\u6483\u8005\u306f\u6b63\u898f\u30b5\u30a4\u30c8\u3092\u66f8\u304d\u63db\u3048\u308b\u308f\u3051\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u5916\u90e8\u306e\u7f60\u30b5\u30a4\u30c8\u304b\u3089\u6b63\u898f\u30b5\u30a4\u30c8\u3092\u8aad\u307f\u8fbc\u3080\u3060\u3051\u306a\u306e\u3067\u3001Web\u30b5\u30a4\u30c8\u306e\u6539\u3056\u3093\u3068\u306f\u5225\u306e\u653b\u6483\u3067\u3059\u3002<strong>\u5229\u7528\u8005\u306b\u306f\u7f60\u30b5\u30a4\u30c8\u3057\u304b\u898b\u3048\u3066\u3044\u306a\u3044<\/strong>\u70b9\u3092\u62bc\u3055\u3048\u3066\u304a\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n<h3>\u88ab\u5bb3\u306f\u3001\u30ed\u30b0\u30a4\u30f3\u4e2d\u306e\u5229\u7528\u8005\u304c\u30de\u30a6\u30b9\u64cd\u4f5c\u3060\u3051\u3067\u5b9f\u884c\u3067\u304d\u308b\u8a2d\u5b9a\u5909\u66f4\u3084\u60c5\u5831\u767a\u4fe1\u306b\u53ca\u3076<\/h3>\n<p>\u30af\u30ea\u30c3\u30af\u30b8\u30e3\u30c3\u30ad\u30f3\u30b0\u306e\u88ab\u5bb3\u306f\u3001<strong>\u30ed\u30b0\u30a4\u30f3\u5f8c\u306e\u5229\u7528\u8005\u304c\u4f7f\u3048\u308b\u6a5f\u80fd\u306e\u3046\u3061\u3001\u30af\u30ea\u30c3\u30af\u3060\u3051\u3067\u5b8c\u4e86\u3059\u308b\u64cd\u4f5c<\/strong>\u306b\u9650\u3089\u308c\u307e\u3059\u3002\u653b\u6483\u8005\u304c\u5229\u7528\u8005\u306b\u884c\u308f\u305b\u3089\u308c\u308b\u306e\u306f\u3001\u30dc\u30bf\u30f3\u3092\u62bc\u3059\u3053\u3068\u3060\u3051\u3060\u304b\u3089\u3067\u3059\u3002<\/p>\n<p>IPA\u306e\u300c\u5b89\u5168\u306a\u30a6\u30a7\u30d6\u30b5\u30a4\u30c8\u306e\u4f5c\u308a\u65b9\u300d\u3067\u3082\u3001\u30de\u30a6\u30b9\u64cd\u4f5c\u3060\u3051\u3067\u5b9f\u884c\u3067\u304d\u308b\u6a5f\u80fd\u304c\u3042\u308b\u3053\u3068\u3092\u3001\u3053\u306e\u8106\u5f31\u6027\u306e\u524d\u63d0\u3068\u3057\u3066\u8aac\u660e\u3057\u3066\u3044\u307e\u3059\u3002\u305f\u3068\u3048\u3070\u3001SNS\u3084Web\u30b5\u30fc\u30d3\u30b9\u3067\u306e\u516c\u958b\u7bc4\u56f2\u306e\u5909\u66f4\u3001\u610f\u56f3\u3057\u306a\u3044\u66f8\u304d\u8fbc\u307f\u3084\u300c\u3044\u3044\u306d\u300d\u3001\u9000\u4f1a\u306e\u624b\u7d9a\u304d\u3001\u5404\u7a2e\u306e\u8a2d\u5b9a\u5909\u66f4\u306a\u3069\u304c\u8003\u3048\u3089\u308c\u307e\u3059\u3002<\/p>\n<p>\u4e00\u65b9\u3067\u3001\u30d1\u30b9\u30ef\u30fc\u30c9\u3084\u9001\u91d1\u5148\u306e\u53e3\u5ea7\u756a\u53f7\u306e\u5165\u529b\u306e\u3088\u3046\u306b\u3001\u30ad\u30fc\u30dc\u30fc\u30c9\u3067\u6587\u5b57\u3092\u6253\u3064\u5fc5\u8981\u304c\u3042\u308b\u64cd\u4f5c\u306f\u72d9\u308f\u308c\u306b\u304f\u304f\u306a\u308a\u307e\u3059\u3002\u5229\u7528\u8005\u306b\u6587\u5b57\u3092\u5165\u529b\u3055\u305b\u308b\u3053\u3068\u306f\u3001\u30af\u30ea\u30c3\u30af\u3088\u308a\u3082\u96e3\u3057\u3044\u305f\u3081\u3067\u3059\u3002<\/p>\n<p>\u3064\u307e\u308a\u3001\u88ab\u5bb3\u306e\u5927\u304d\u3055\u306f\u300c\u30af\u30ea\u30c3\u30af\u3060\u3051\u3067\u4f55\u304c\u3067\u304d\u308b\u753b\u9762\u304b\u300d\u3067\u6c7a\u307e\u308a\u307e\u3059\u3002\u3053\u306e\u6027\u8cea\u306f\u3001\u5f8c\u3067\u8aac\u660e\u3059\u308b\u5bfe\u7b56\u306e\u8003\u3048\u65b9\u306b\u3082\u3064\u306a\u304c\u308a\u307e\u3059\u3002<\/p>\n<h3>\u30af\u30ea\u30c3\u30af\u30b8\u30e3\u30c3\u30ad\u30f3\u30b0\u3068CSRF\u306f\u88ab\u5bb3\u304c\u4f3c\u3066\u3044\u308b\u304c\u3001\u653b\u6483\u306e\u624b\u6bb5\u3068\u5bfe\u7b56\u304c\u7570\u306a\u308b\u305f\u3081\u5225\u3005\u306b\u5bfe\u7b56\u304c\u5fc5\u8981<\/h3>\n<p>\u30af\u30ea\u30c3\u30af\u30b8\u30e3\u30c3\u30ad\u30f3\u30b0\u306e\u88ab\u5bb3\u306e\u5185\u5bb9\u306f\u3001<a href=\"https:\/\/venu-sys.co.jp\/jo-sys\/11345\/\">CSRF\uff08\u30af\u30ed\u30b9\u30b5\u30a4\u30c8\u30ea\u30af\u30a8\u30b9\u30c8\u30d5\u30a9\u30fc\u30b8\u30a7\u30ea\uff09<\/a>\u3068\u3088\u304f\u4f3c\u3066\u3044\u307e\u3059\u3002\u3057\u304b\u3057\u3001<strong>\u653b\u6483\u306e\u624b\u6bb5\u3068\u5bfe\u7b56\u306f\u5225\u7269<\/strong>\u306a\u306e\u3067\u3001\u7247\u65b9\u306e\u5bfe\u7b56\u3060\u3051\u3067\u306f\u8db3\u308a\u307e\u305b\u3093\u3002\u4e3b\u306a\u9055\u3044\u3092\u8868\u306b\u307e\u3068\u3081\u307e\u3057\u305f\u3002<\/p>\n<table>\n<thead>\n<tr>\n<th>\u9805\u76ee<\/th>\n<th>\u30af\u30ea\u30c3\u30af\u30b8\u30e3\u30c3\u30ad\u30f3\u30b0<\/th>\n<th>CSRF<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u5229\u7528\u8005\u306b\u3055\u305b\u308b\u3053\u3068<\/td>\n<td>\u6b63\u898f\u30b5\u30a4\u30c8\u306e\u30dc\u30bf\u30f3\u3092\u81ea\u5206\u3067\u62bc\u3055\u305b\u308b<\/td>\n<td>\u7f60\u30da\u30fc\u30b8\u3092\u958b\u304b\u305b\u308b\u3060\u3051<\/td>\n<\/tr>\n<tr>\n<td>\u653b\u6483\u306b\u4f7f\u3046\u4ed5\u7d44\u307f<\/td>\n<td>\u900f\u660e\u306b\u3057\u305f\u6b63\u898f\u30b5\u30a4\u30c8\u306e\u91cd\u306d\u5408\u308f\u305b\uff08iframe\uff09<\/td>\n<td>\u7f60\u30da\u30fc\u30b8\u304b\u3089\u81ea\u52d5\u3067\u9001\u308b\u30ea\u30af\u30a8\u30b9\u30c8<\/td>\n<\/tr>\n<tr>\n<td>\u4e3b\u306a\u88ab\u5bb3<\/td>\n<td>\u8a2d\u5b9a\u5909\u66f4\u3001\u610f\u56f3\u3057\u306a\u3044\u6295\u7a3f\u3001\u9000\u4f1a\u306a\u3069<\/td>\n<td>\u8a2d\u5b9a\u5909\u66f4\u3001\u610f\u56f3\u3057\u306a\u3044\u6295\u7a3f\u3001\u9001\u91d1\u306a\u3069<\/td>\n<\/tr>\n<tr>\n<td>\u5bfe\u7b56\u306e\u4e2d\u5fc3<\/td>\n<td>\u307b\u304b\u306e\u30b5\u30a4\u30c8\u3078\u306e\u57cb\u3081\u8fbc\u307f\u8868\u793a\u306e\u5236\u9650<\/td>\n<td>\u30c8\u30fc\u30af\u30f3\u691c\u8a3c\u3001Cookie\u306eSameSite\u5c5e\u6027<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>IPA\u306e\u89e3\u8aac\u3067\u3082\u3001\u30af\u30ea\u30c3\u30af\u30b8\u30e3\u30c3\u30ad\u30f3\u30b0\u306fCSRF\u3068\u540c\u3058\u7a2e\u985e\u306e\u88ab\u5bb3\u3092\u751f\u3080\u3068\u8aac\u660e\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u305f\u3060\u3057\u3001\u30af\u30ea\u30c3\u30af\u30b8\u30e3\u30c3\u30ad\u30f3\u30b0\u3067\u306f\u5229\u7528\u8005\u304c\u6b63\u898f\u306e\u753b\u9762\u3092\u64cd\u4f5c\u3059\u308b\u305f\u3081\u3001CSRF\u7528\u306e\u30c8\u30fc\u30af\u30f3\u3082\u6b63\u3057\u304f\u9001\u3089\u308c\u3066\u3057\u307e\u3044\u307e\u3059\u3002<\/p>\n<p>\u9006\u306b\u3001\u57cb\u3081\u8fbc\u307f\u8868\u793a\u306e\u5236\u9650\u306f\u3001\u7f60\u30da\u30fc\u30b8\u304b\u3089\u76f4\u63a5\u9001\u3089\u308c\u308bCSRF\u306e\u30ea\u30af\u30a8\u30b9\u30c8\u306b\u306f\u52b9\u304d\u307e\u305b\u3093\u3002<strong>2\u3064\u306e\u653b\u6483\u306b\u306f\u3001\u305d\u308c\u305e\u308c\u306e\u5bfe\u7b56\u304c\u5fc5\u8981<\/strong>\u3060\u3068\u899a\u3048\u3066\u304a\u304d\u307e\u3057\u3087\u3046\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\/vuln\/websecurity\/clickjacking.html\">IPA\u300c\u5b89\u5168\u306a\u30a6\u30a7\u30d6\u30b5\u30a4\u30c8\u306e\u4f5c\u308a\u65b9\u300d\u30af\u30ea\u30c3\u30af\u30b8\u30e3\u30c3\u30ad\u30f3\u30b0<\/a><\/p>\n<h2>\u30af\u30ea\u30c3\u30af\u30b8\u30e3\u30c3\u30ad\u30f3\u30b0\u306e\u5c4a\u51fa\u306f2011\u5e74\u306bIPA\u3067\u521d\u3081\u3066\u53d7\u3051\u4ed8\u3051\u3089\u308c\u3001\u5c4a\u51fa\u7d71\u8a08\u306b\u306f\u8868\u308c\u306b\u304f\u3044<\/h2>\n<p><img decoding=\"async\" alt=\"IPA\u5c4a\u51fa\u5236\u5ea6\u3067\u306e\u4f4d\u7f6e\u3065\u3051\" src=\"https:\/\/venu-sys.co.jp\/jo-sys\/wp-content\/uploads\/sites\/2\/2026\/11\/h2-2-1.png\" \/><\/p>\n<p>IPA\u3068JPCERT\/CC\u306f\u3001\u30a6\u30a7\u30d6\u30b5\u30a4\u30c8\u3068\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u88fd\u54c1\u306e\u8106\u5f31\u6027\u95a2\u9023\u60c5\u5831\u306e\u5c4a\u51fa\u3092\u53d7\u3051\u4ed8\u3051\u3066\u3044\u307e\u3059\u3002\u5c4a\u51fa\u306e\u4ef6\u6570\u306f\u3001\u56db\u534a\u671f\u3054\u3068\u306b\u96c6\u8a08\u30fb\u516c\u8868\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u305f\u3060\u3057\u3001\u3053\u308c\u306f\u767a\u898b\u8005\u304c\u4efb\u610f\u3067\u5c4a\u3051\u51fa\u305f\u8106\u5f31\u6027\u306e\u6570\u3067\u3059\u3002\u5b9f\u969b\u306b\u8d77\u304d\u305f\u88ab\u5bb3\u306e\u4ef6\u6570\u3067\u306f\u306a\u3044\u70b9\u306b\u6ce8\u610f\u3057\u3066\u304f\u3060\u3055\u3044\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\u7ae0\u306e\u6570\u5024\u306e\u3046\u3061\u3001\u30af\u30ea\u30c3\u30af\u30b8\u30e3\u30c3\u30ad\u30f3\u30b0\u56fa\u6709\u306e\u3082\u306e\u306f\u300c2011\u5e74\u306e\u521d\u53d7\u4ed8\u300d\u3068\u300c\u53d7\u4ed8\u958b\u59cb\u304b\u30892014\u5e74\u7b2c4\u56db\u534a\u671f\u307e\u3067\u306e\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u88fd\u54c1\u306e\u5c4a\u51fa0\u4ef6\u300d\u306e2\u3064\u3060\u3051\u3067\u3059\u3002<strong>\u305d\u308c\u4ee5\u5916\u306f\u3001\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u88fd\u54c1\u3068\u30a6\u30a7\u30d6\u30b5\u30a4\u30c8\u3092\u5408\u308f\u305b\u305f\u5c4a\u51fa\u5168\u4f53\u3001\u30a6\u30a7\u30d6\u30b5\u30a4\u30c8\u306e\u8106\u5f31\u6027\u5168\u822c\u3001XSS\u3001SQL\u30a4\u30f3\u30b8\u30a7\u30af\u30b7\u30e7\u30f3\u3001\u8106\u5f31\u6027\u306e\u60aa\u7528\u5168\u822c\u306e\u5024\u3067\u3059\u3002<\/strong>\u30af\u30ea\u30c3\u30af\u30b8\u30e3\u30c3\u30ad\u30f3\u30b0\u306e\u4ef6\u6570\u3084\u5272\u5408\u3068\u3057\u3066\u5f15\u7528\u3057\u306a\u3044\u3067\u304f\u3060\u3055\u3044\u3002<\/p>\n<\/div>\n<h3>\u30af\u30ea\u30c3\u30af\u30b8\u30e3\u30c3\u30ad\u30f3\u30b0\u306e\u5c4a\u51fa\u306f2011\u5e74\u306b\u59cb\u307e\u308a\u3001\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u88fd\u54c1\u306e\u5c4a\u51fa\u306f2014\u5e74\u7b2c4\u56db\u534a\u671f\u307e\u30670\u4ef6\u3060\u3063\u305f<\/h3>\n<p>IPA\u304c\u516c\u8868\u3057\u3066\u3044\u308b\u30af\u30ea\u30c3\u30af\u30b8\u30e3\u30c3\u30ad\u30f3\u30b0\u56fa\u6709\u306e\u30c7\u30fc\u30bf\u306f\u3001<strong>\u5c4a\u51fa\u304c\u59cb\u307e\u3063\u305f\u5e74\u3068\u3001\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u88fd\u54c1\u306e\u5c4a\u51fa\u4ef6\u6570<\/strong>\u306e2\u3064\u3067\u3059\u3002<\/p>\n<p>IPA\u306e\u300c\u5b89\u5168\u306a\u30a6\u30a7\u30d6\u30b5\u30a4\u30c8\u306e\u4f5c\u308a\u65b9\u300d\u306b\u3088\u308b\u3068\u3001\u30af\u30ea\u30c3\u30af\u30b8\u30e3\u30c3\u30ad\u30f3\u30b0\u306e\u5c4a\u51fa\u3092\u521d\u3081\u3066\u53d7\u3051\u4ed8\u3051\u305f\u306e\u306f2011\u5e74\u3067\u3057\u305f\u3002\u3053\u308c\u306f\u30a6\u30a7\u30d6\u30b5\u30a4\u30c8\u306b\u95a2\u3059\u308b\u5c4a\u51fa\u3067\u3059\u3002<\/p>\n<p>\u4e00\u65b9\u3001\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u88fd\u54c1\u306b\u95a2\u3059\u308b\u5c4a\u51fa\u306f\u3001\u53d7\u4ed8\u958b\u59cb\u304b\u30892014\u5e74\u7b2c4\u56db\u534a\u671f\u307e\u3067\u306e\u7d2f\u8a08\u30670\u4ef6\u3067\u3057\u305f\u3002\u3053\u308c\u306f2014\u5e74\u7b2c4\u56db\u534a\u671f\u307e\u3067\u306e\u7d2f\u8a08\u3067\u3042\u308a\u3001\u73fe\u5728\u306e\u4ef6\u6570\u3092\u793a\u3059\u5024\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n<p><img decoding=\"async\" alt=\"IPA\u5c4a\u51fa\u5236\u5ea6\u306b\u304a\u3051\u308b\u30af\u30ea\u30c3\u30af\u30b8\u30e3\u30c3\u30ad\u30f3\u30b0\u306e\u4f4d\u7f6e\u3065\u3051\uff082008\u5e74\u306f\u5c4a\u51fa\u4ef6\u6570\u6700\u591a\u306e2,622\u4ef6\u3067\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u88fd\u54c1\u3068\u30a6\u30a7\u30d6\u30b5\u30a4\u30c8\u306e\u5408\u8a08\u30012011\u5e74\u306b\u30af\u30ea\u30c3\u30af\u30b8\u30e3\u30c3\u30ad\u30f3\u30b0\u306e\u5c4a\u51fa\u3092\u521d\u53d7\u4ed8\u3001\u53d7\u4ed8\u958b\u59cb\u301c2014\u5e74\u7b2c4\u56db\u534a\u671f\u306e\u7d2f\u8a08\u3067\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u88fd\u54c1\u306e\u5c4a\u51fa\u306f0\u4ef6\uff09\" src=\"https:\/\/venu-sys.co.jp\/jo-sys\/wp-content\/uploads\/sites\/2\/2026\/11\/chart1-timeline.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\/vuln\/websecurity\/clickjacking.html\">IPA\u300c\u5b89\u5168\u306a\u30a6\u30a7\u30d6\u30b5\u30a4\u30c8\u306e\u4f5c\u308a\u65b9\u300d\u30af\u30ea\u30c3\u30af\u30b8\u30e3\u30c3\u30ad\u30f3\u30b0<\/a>\uff0f<a target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/www.ipa.go.jp\/security\/reports\/vuln\/software\/2025q4.html\">IPA\u300c\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u7b49\u306e\u8106\u5f31\u6027\u95a2\u9023\u60c5\u5831\u306b\u95a2\u3059\u308b\u5c4a\u51fa\u72b6\u6cc1\u300d2025\u5e74\u7b2c4\u56db\u534a\u671f<\/a>\u306e\u30c7\u30fc\u30bf\u3092\u3082\u3068\u306b\u4f5c\u6210<\/p>\n<p>\u307e\u305f\u3001IPA\u306f\u3001\u30af\u30ea\u30c3\u30af\u30b8\u30e3\u30c3\u30ad\u30f3\u30b0\u306e\u5c4a\u51fa\u306f\u591a\u304f\u306a\u3044\u3068\u8aac\u660e\u3057\u3066\u3044\u307e\u3059\u3002<strong>\u5c4a\u51fa\u306e\u6b74\u53f2\u304c\u6d45\u304f\u3001\u4ef6\u6570\u3082\u5c11\u306a\u3044<\/strong>\u305f\u3081\u3001\u5c4a\u51fa\u7d71\u8a08\u306e\u4e0a\u3067\u306f\u76ee\u7acb\u3061\u306b\u304f\u3044\u8106\u5f31\u6027\u3060\u3068\u8a00\u3048\u307e\u3059\u3002<\/p>\n<h3>\u5c4a\u51fa\u4ef6\u6570\u304c\u6700\u3082\u591a\u304b\u3063\u305f2008\u5e74\u306e2,622\u4ef6\u306f\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u88fd\u54c1\u3068\u30a6\u30a7\u30d6\u30b5\u30a4\u30c8\u306e\u5408\u8a08\u3067\u3042\u308a\u3001\u30af\u30ea\u30c3\u30af\u30b8\u30e3\u30c3\u30ad\u30f3\u30b0\u306e\u5c4a\u51fa\u958b\u59cb\u3088\u308a\u524d\u306e\u6570\u5b57<\/h3>\n<p>\u8106\u5f31\u6027\u306e\u5c4a\u51fa\u306e\u7d2f\u8a08\u30c7\u30fc\u30bf\u306f\u3001<strong>\u30af\u30ea\u30c3\u30af\u30b8\u30e3\u30c3\u30ad\u30f3\u30b0\u306e\u5c4a\u51fa\u304c\u59cb\u307e\u308b\u524d\u306e\u6642\u671f\u306e\u5f71\u97ff\u3092\u5f37\u304f\u53d7\u3051\u3066\u3044\u307e\u3059<\/strong>\u3002<\/p>\n<p>IPA\u306b\u3088\u308b\u3068\u3001\u5c4a\u51fa\u4ef6\u6570\u304c\u6700\u3082\u591a\u304b\u3063\u305f\u306e\u306f2008\u5e74\u3067\u30012,622\u4ef6\u3067\u3057\u305f\u3002\u3053\u308c\u306f\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u88fd\u54c1\u3068\u30a6\u30a7\u30d6\u30b5\u30a4\u30c8\u3092\u5408\u308f\u305b\u305f\u4ef6\u6570\u3067\u3001\u30a6\u30a7\u30d6\u30b5\u30a4\u30c8\u5358\u72ec\u306e\u5024\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u3053\u306e\u5e74\u306fXSS\u3068DNS\u60c5\u5831\u306e\u8a2d\u5b9a\u4e0d\u5099\u306e\u5c4a\u51fa\u304c\u591a\u304b\u3063\u305f\u3068\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u30a6\u30a7\u30d6\u30b5\u30a4\u30c8\u306e\u5c4a\u51fa\u306b\u9650\u3063\u305f\u7a2e\u985e\u5225\u306e\u7d2f\u8a08\u30b7\u30a7\u30a2\u3067\u306f\u30012025\u5e74\u7b2c4\u56db\u534a\u671f\u672b\u6642\u70b9\u3067XSS\u304c57%\u3092\u5360\u3081\u307e\u3059\u3002\u6bcd\u6570\u306f\u4e0d\u53d7\u7406\u3092\u9664\u304f13,171\u4ef6\u3067\u3059\u3002<\/p>\n<p>SQL\u30a4\u30f3\u30b8\u30a7\u30af\u30b7\u30e7\u30f3\u306f\u30012026\u5e74\u7b2c2\u56db\u534a\u671f\u672b\u6642\u70b9\u306e\u7d2f\u8a08\u306711%\u3067\u3059\u30022\u3064\u306f\u96c6\u8a08\u6642\u70b9\u3068\u6bcd\u6570\u304c\u9055\u3046\u305f\u3081\u3001\u8db3\u3057\u5408\u308f\u305b\u308b\u3053\u3068\u306f\u3067\u304d\u307e\u305b\u3093\u3002<\/p>\n<p>\u3053\u308c\u3089\u306e\u6570\u5024\u304b\u3089\u8aad\u307f\u53d6\u308c\u308b\u306e\u306f\u3001\u5c4a\u51fa\u304c\u591a\u304b\u3063\u305f\u6642\u671f\u306e\u591a\u304f\u304c\u3001\u30af\u30ea\u30c3\u30af\u30b8\u30e3\u30c3\u30ad\u30f3\u30b0\u306e\u5c4a\u51fa\u304c\u521d\u3081\u3066\u53d7\u3051\u4ed8\u3051\u3089\u308c\u308b\u524d\u306b\u96c6\u4e2d\u3057\u3066\u3044\u308b\u3068\u3044\u3046\u70b9\u3067\u3059\u3002\u6700\u591a\u306e2008\u5e74\u306f\u3001\u30af\u30ea\u30c3\u30af\u30b8\u30e3\u30c3\u30ad\u30f3\u30b0\u306e\u5c4a\u51fa\u304c\u59cb\u307e\u3063\u305f2011\u5e74\u306e3\u5e74\u524d\u3067\u3059\u3002<\/p>\n<p>XSS\u306e\u7d2f\u8a08\u30b7\u30a7\u30a2\u304c\u5927\u304d\u3044\u306e\u3082\u3001\u3053\u306e\u6642\u671f\u306e\u9055\u3044\u3067\u8aac\u660e\u3067\u304d\u308b\u90e8\u5206\u304c\u3042\u308b\u3068\u8003\u3048\u3089\u308c\u307e\u3059\u3002<strong>\u7d2f\u8a08\u30b7\u30a7\u30a2\u3067\u76ee\u7acb\u305f\u306a\u3044\u3053\u3068\u3092\u3001\u5bfe\u7b56\u306e\u512a\u5148\u5ea6\u304c\u4f4e\u3044\u6839\u62e0\u306b\u306f\u3067\u304d\u307e\u305b\u3093<\/strong>\u3002\u305f\u3060\u3057\u30012011\u5e74\u4ee5\u964d\u306b\u9650\u3063\u3066\u3082\u5c11\u6570\u3067\u3042\u308b\u53ef\u80fd\u6027\u306f\u5341\u5206\u306b\u3042\u308a\u3001\u300c\u5b9f\u306f\u591a\u3044\u300d\u3068\u8a00\u3048\u308b\u308f\u3051\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n<h3>\u30a6\u30a7\u30d6\u30b5\u30a4\u30c8\u306e\u8106\u5f31\u6027\u5168\u822c\u306e\u5c4a\u51fa\u306f2023\u5e74\u306e505\u4ef6\u304b\u30892025\u5e74\u306e178\u4ef6\u3078\u6e1b\u3063\u305f\u304c\u3001\u8106\u5f31\u6027\u306e\u60aa\u7528\u306f2026\u5e74\u724810\u5927\u8105\u5a01\uff08\u7d44\u7e54\uff09\u30674\u4f4d\u306b\u5165\u3063\u3066\u3044\u308b<\/h3>\n<p>\u30a6\u30a7\u30d6\u30b5\u30a4\u30c8\u306e\u8106\u5f31\u6027\u5168\u822c\u306e\u5c4a\u51fa\u306f\u6e1b\u3063\u3066\u3044\u307e\u3059\u304c\u3001<strong>\u8106\u5f31\u6027\u306e\u60aa\u7528\u306f\u4eca\u3082\u4e3b\u8981\u306a\u8105\u5a01\u3067\u3059<\/strong>\u3002\u5c4a\u51fa\u4ef6\u6570\u306f\u6b21\u306e\u3068\u304a\u308a\u3067\u3059\u3002<\/p>\n<table>\n<thead>\n<tr>\n<th>\u5e74<\/th>\n<th>\u30a6\u30a7\u30d6\u30b5\u30a4\u30c8\u533a\u5206\u306e\u5c4a\u51fa\u4ef6\u6570\uff08\u5168\u7a2e\u985e\u306e\u5408\u8a08\u3067\u3001\u30af\u30ea\u30c3\u30af\u30b8\u30e3\u30c3\u30ad\u30f3\u30b0\u5358\u72ec\u3067\u306f\u306a\u3044\uff09<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>2023\u5e74<\/td>\n<td>505\u4ef6<\/td>\n<\/tr>\n<tr>\n<td>2024\u5e74<\/td>\n<td>336\u4ef6<\/td>\n<\/tr>\n<tr>\n<td>2025\u5e74<\/td>\n<td>178\u4ef6<\/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\/vuln\/software\/2023q4.html\">IPA\u300c\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u7b49\u306e\u8106\u5f31\u6027\u95a2\u9023\u60c5\u5831\u306b\u95a2\u3059\u308b\u5c4a\u51fa\u72b6\u6cc1\u300d2023\u5e74\u7b2c4\u56db\u534a\u671f<\/a>\uff0f<a target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/www.ipa.go.jp\/security\/reports\/vuln\/software\/2024q4.html\">2024\u5e74\u7b2c4\u56db\u534a\u671f<\/a>\uff0f<a target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/www.ipa.go.jp\/security\/reports\/vuln\/software\/2025q4.html\">2025\u5e74\u7b2c4\u56db\u534a\u671f<\/a>\u306e\u30c7\u30fc\u30bf\u3092\u3082\u3068\u306b\u4f5c\u6210<\/p>\n<p>\u4e00\u65b9\u3001IPA\u306f\u300c\u30b7\u30b9\u30c6\u30e0\u306e\u8106\u5f31\u6027\u3092\u60aa\u7528\u3057\u305f\u653b\u6483\u300d\u30922026\u5e74\u724810\u5927\u8105\u5a01\uff08\u7d44\u7e54\uff09\u306e4\u4f4d\u306b\u6319\u3052\u3066\u304a\u308a\u3001\u9078\u51fa\u306f6\u5e74\u9023\u7d9a\u3067\u3059\u3002<\/p>\n<p>\u3053\u306e2\u3064\u304b\u3089\u8aad\u307f\u53d6\u308c\u308b\u306e\u306f\u3001\u5c4a\u51fa\u306e\u6e1b\u5c11\u3092\u30b5\u30a4\u30c8\u304c\u5b89\u5168\u306b\u306a\u3063\u305f\u8a3c\u62e0\u3068\u306f\u898b\u306a\u305b\u306a\u3044\u3068\u3044\u3046\u70b9\u3067\u3059\u3002\u5c4a\u51fa\u306f\u4efb\u610f\u3067\u3042\u308a\u3001\u60aa\u7528\u306f\u5f15\u304d\u7d9a\u304d\u4e3b\u8981\u306a\u8105\u5a01\u3067\u3059\u3002<\/p>\n<p>\u7a2e\u985e\u5225\u306e\u5e74\u9593\u5185\u8a33\u306f\u975e\u516c\u8868\u3067\u3001\u30af\u30ea\u30c3\u30af\u30b8\u30e3\u30c3\u30ad\u30f3\u30b0\u306e\u5897\u6e1b\u306f\u5206\u304b\u308a\u307e\u305b\u3093\u3002<mark>\u4ef6\u6570\u306e\u5c11\u306a\u3055\u3084\u6e1b\u5c11\u3092\u7406\u7531\u306b\u5bfe\u7b56\u3092\u5f8c\u56de\u3057\u306b\u3057\u306a\u3044<\/mark>\u3053\u3068\u304c\u5927\u5207\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.ipa.go.jp\/security\/vuln\/websecurity\/clickjacking.html\">IPA\u300c\u5b89\u5168\u306a\u30a6\u30a7\u30d6\u30b5\u30a4\u30c8\u306e\u4f5c\u308a\u65b9\u300d\u30af\u30ea\u30c3\u30af\u30b8\u30e3\u30c3\u30ad\u30f3\u30b0<\/a>\uff0f<a target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/www.ipa.go.jp\/security\/reports\/vuln\/software\/2023q4.html\">IPA\u300c\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u7b49\u306e\u8106\u5f31\u6027\u95a2\u9023\u60c5\u5831\u306b\u95a2\u3059\u308b\u5c4a\u51fa\u72b6\u6cc1\u300d2023\u5e74\u7b2c4\u56db\u534a\u671f<\/a>\uff0f<a target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/www.ipa.go.jp\/security\/reports\/vuln\/software\/2024q4.html\">2024\u5e74\u7b2c4\u56db\u534a\u671f<\/a>\uff0f<a target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/www.ipa.go.jp\/security\/reports\/vuln\/software\/2025q4.html\">2025\u5e74\u7b2c4\u56db\u534a\u671f<\/a>\uff0f<a target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/www.ipa.go.jp\/security\/reports\/vuln\/software\/omgdg50000007gdr-att\/vuln_software_report_2025q4.pdf\">\u540c 2025\u5e74\u7b2c4\u56db\u534a\u671f \u30ec\u30dd\u30fc\u30c8\uff08PDF\uff09<\/a>\uff0f<a target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/www.ipa.go.jp\/security\/reports\/vuln\/software\/rcu1hd00000162jv-att\/vuln_software_report_2026q2.pdf\">\u540c 2026\u5e74\u7b2c2\u56db\u534a\u671f \u30ec\u30dd\u30fc\u30c8\uff08PDF\uff09<\/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\u300d\u7d44\u7e54\u7de8 \u89e3\u8aac\u66f8<\/a><\/p>\n<h2>\u30af\u30ea\u30c3\u30af\u30b8\u30e3\u30c3\u30ad\u30f3\u30b0\u306e\u6839\u672c\u5bfe\u7b56\u306f\u3001X-Frame-Options\u306a\u3069\u3067\u307b\u304b\u306e\u30b5\u30a4\u30c8\u304b\u3089\u306e\u57cb\u3081\u8fbc\u307f\u8868\u793a\u3092\u5236\u9650\u3059\u308b\u3053\u3068<\/h2>\n<p><img decoding=\"async\" alt=\"\u30b5\u30a4\u30c8\u5074\u306e\u5bfe\u7b56\" src=\"https:\/\/venu-sys.co.jp\/jo-sys\/wp-content\/uploads\/sites\/2\/2026\/11\/h2-3-1.png\" \/><\/p>\n<p>\u30af\u30ea\u30c3\u30af\u30b8\u30e3\u30c3\u30ad\u30f3\u30b0\u306f\u3001\u6b63\u898f\u30b5\u30a4\u30c8\u304c\u307b\u304b\u306e\u30b5\u30a4\u30c8\u306e\u4e2d\u306b\u57cb\u3081\u8fbc\u307e\u308c\u3066\u8868\u793a\u3055\u308c\u308b\u3053\u3068\u3092\u524d\u63d0\u306b\u3057\u305f\u653b\u6483\u3067\u3059\u3002\u305d\u306e\u305f\u3081\u3001\u6839\u672c\u5bfe\u7b56\u306f<strong>\u81ea\u793e\u306e\u30da\u30fc\u30b8\u3092\u3001\u8a31\u53ef\u3057\u3066\u3044\u306a\u3044\u30b5\u30a4\u30c8\u306b\u57cb\u3081\u8fbc\u307e\u305b\u306a\u3044\u8a2d\u5b9a\u3092\u30b5\u30a4\u30c8\u5074\u3067\u884c\u3046\u3053\u3068<\/strong>\u3067\u3059\u3002<\/p>\n<p>\u3053\u306e\u7ae0\u3067\u306f\u3001\u5b9f\u88c5\u306e\u624b\u9806\u3067\u306f\u306a\u304f\u5bfe\u7b56\u306e\u8003\u3048\u65b9\u3092\u8aac\u660e\u3057\u307e\u3059\u3002\u958b\u767a\u4f1a\u793e\u3084\u59d4\u8a17\u5148\u306b\u300c\u4f55\u304c\u8a2d\u5b9a\u3055\u308c\u3066\u3044\u308b\u304b\u300d\u3092\u78ba\u8a8d\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308b\u3053\u3068\u304c\u76ee\u7684\u3067\u3059\u3002<\/p>\n<h3>X-Frame-Options\u306fDENY\u304bSAMEORIGIN\u3092\u6307\u5b9a\u3057\u3001CSP\u306eframe-ancestors\u3068\u3042\u308f\u305b\u3066\u5916\u90e8\u30b5\u30a4\u30c8\u3078\u306e\u57cb\u3081\u8fbc\u307f\u3092\u62d2\u5426\u3059\u308b<\/h3>\n<p>\u57cb\u3081\u8fbc\u307f\u8868\u793a\u306e\u5236\u9650\u306f\u3001<strong>\u30b5\u30a4\u30c8\u304c\u8fd4\u3059\u30ec\u30b9\u30dd\u30f3\u30b9\u30d8\u30c3\u30c0\u3067\u3001\u57cb\u3081\u8fbc\u307f\u3092\u8a31\u3059\u304b\u3069\u3046\u304b\u3092\u30d6\u30e9\u30a6\u30b6\u306b\u4f1d\u3048\u308b<\/strong>\u4ed5\u7d44\u307f\u3067\u3059\u3002\u30d6\u30e9\u30a6\u30b6\u306f\u3053\u306e\u6307\u793a\u3092\u898b\u3066\u3001\u8a31\u53ef\u3055\u308c\u3066\u3044\u306a\u3044\u57cb\u3081\u8fbc\u307f\u3092\u8868\u793a\u3057\u307e\u305b\u3093\u3002\u4e3b\u306a\u6307\u5b9a\u65b9\u6cd5\u3092\u8868\u306b\u307e\u3068\u3081\u307e\u3057\u305f\u3002<\/p>\n<table>\n<thead>\n<tr>\n<th>\u6307\u5b9a\u65b9\u6cd5<\/th>\n<th>\u57cb\u3081\u8fbc\u307f\u3092\u8a31\u3059\u7bc4\u56f2<\/th>\n<th>\u6ce8\u610f\u70b9<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>X-Frame-Options: DENY<\/td>\n<td>\u3069\u306e\u30b5\u30a4\u30c8\u306b\u3082\u8a31\u3055\u306a\u3044<\/td>\n<td>\u81ea\u793e\u30b5\u30a4\u30c8\u5185\u3067\u306e\u57cb\u3081\u8fbc\u307f\u3082\u3067\u304d\u306a\u304f\u306a\u308b<\/td>\n<\/tr>\n<tr>\n<td>X-Frame-Options: SAMEORIGIN<\/td>\n<td>\u540c\u3058\u30b5\u30a4\u30c8\u306e\u4e2d\u3060\u3051\u8a31\u3059<\/td>\n<td>\u81ea\u793e\u30b5\u30a4\u30c8\u5185\u3067\u57cb\u3081\u8fbc\u307f\u3092\u4f7f\u3046\u5834\u5408\u306e\u57fa\u672c<\/td>\n<\/tr>\n<tr>\n<td>X-Frame-Options: ALLOW-FROM<\/td>\n<td>\u6307\u5b9a\u3057\u305f1\u3064\u306e\u30b5\u30a4\u30c8\u3060\u3051\u8a31\u3059<\/td>\n<td>\u5ec3\u6b62\u3055\u308c\u305f\u6307\u5b9a\u3067\u3001\u73fe\u5728\u306e\u4e3b\u8981\u30d6\u30e9\u30a6\u30b6\u3067\u306f\u6a5f\u80fd\u3057\u306a\u3044\u305f\u3081\u4f7f\u308f\u306a\u3044<\/td>\n<\/tr>\n<tr>\n<td>CSP frame-ancestors<\/td>\n<td>\u8a31\u53ef\u3059\u308b\u30b5\u30a4\u30c8\u3092\u7d30\u304b\u304f\u6307\u5b9a\u3067\u304d\u308b<\/td>\n<td>X-Frame-Options\u306e\u5f8c\u7d99\u3068\u306a\u308b\u65b9\u6cd5\u3002\u4e21\u65b9\u3092\u51fa\u3059\u3068\u3001\u5bfe\u5fdc\u30d6\u30e9\u30a6\u30b6\u306fframe-ancestors\u3092\u512a\u5148\u3059\u308b<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u307b\u304b\u306e\u30b5\u30a4\u30c8\u306b\u57cb\u3081\u8fbc\u307e\u305b\u308b\u5fc5\u8981\u304c\u7121\u3044\u30da\u30fc\u30b8\u306a\u3089\u3001DENY\u3092\u9078\u3073\u307e\u3059\u3002\u81ea\u793e\u30b5\u30a4\u30c8\u306e\u4e2d\u3067\u57cb\u3081\u8fbc\u307f\u3092\u4f7f\u3063\u3066\u3044\u308b\u5834\u5408\u306f\u3001SAMEORIGIN\u304c\u57fa\u672c\u3067\u3059\u3002<\/p>\n<p>CSP\uff08\u30b3\u30f3\u30c6\u30f3\u30c4\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u30dd\u30ea\u30b7\u30fc\uff09\u306eframe-ancestors\u306f\u3001\u8907\u6570\u306e\u8a31\u53ef\u5148\u3092\u6307\u5b9a\u3057\u305f\u3044\u5834\u5408\u306b\u3082\u4f7f\u3048\u307e\u3059\u3002\u7279\u5b9a\u306e\u5916\u90e8\u30b5\u30a4\u30c8\u306b\u3060\u3051\u57cb\u3081\u8fbc\u307f\u3092\u8a31\u3057\u305f\u3044\u5834\u5408\u306f\u3001ALLOW-FROM\u3067\u306f\u306a\u304fframe-ancestors\u3067\u8a31\u53ef\u5148\u3092\u6307\u5b9a\u3057\u307e\u3059\u3002\u3069\u3061\u3089\u306e\u65b9\u6cd5\u3082\u3001HTML\u306emeta\u30bf\u30b0\u3067\u306f\u306a\u304f\u3001HTTP\u30ec\u30b9\u30dd\u30f3\u30b9\u30d8\u30c3\u30c0\u3067\u51fa\u529b\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<strong>\u30ed\u30b0\u30a4\u30f3\u5f8c\u306e\u753b\u9762\u306b\u306f\u3001\u3069\u3061\u3089\u304b\u306e\u65b9\u6cd5\u3067\u5fc5\u305a\u5236\u9650\u3092\u304b\u3051\u3066\u304a\u304f<\/strong>\u3053\u3068\u304c\u5927\u5207\u3067\u3059\u3002<\/p>\n<h3>\u91cd\u8981\u306a\u64cd\u4f5c\u306e\u76f4\u524d\u306b\u30d1\u30b9\u30ef\u30fc\u30c9\u306e\u518d\u5165\u529b\u3092\u6c42\u3081\u308b\u3068\u3001\u30d8\u30c3\u30c0\u5bfe\u7b56\u306b\u52a0\u3048\u3066\u3082\u3046\u4e00\u6bb5\u306e\u9632\u5fa1\u306b\u306a\u308b<\/h3>\n<p>\u30d8\u30c3\u30c0\u306b\u3088\u308b\u5236\u9650\u306b\u52a0\u3048\u3066\u3001<strong>\u91cd\u8981\u306a\u64cd\u4f5c\u306e\u76f4\u524d\u306b\u30d1\u30b9\u30ef\u30fc\u30c9\u3092\u5165\u308c\u76f4\u3057\u3066\u3082\u3089\u3046\u65b9\u6cd5<\/strong>\u3082\u6709\u52b9\u3067\u3059\u3002IPA\u306e\u300c\u5b89\u5168\u306a\u30a6\u30a7\u30d6\u30b5\u30a4\u30c8\u306e\u4f5c\u308a\u65b9\u300d\u3067\u3082\u3001\u6839\u672c\u7684\u306a\u5bfe\u7b56\u306e\u4e00\u3064\u3068\u3057\u3066\u7d39\u4ecb\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u5148\u306b\u8aac\u660e\u3057\u305f\u3068\u304a\u308a\u3001\u30af\u30ea\u30c3\u30af\u30b8\u30e3\u30c3\u30ad\u30f3\u30b0\u306f\u30af\u30ea\u30c3\u30af\u3060\u3051\u3067\u7d42\u308f\u308b\u64cd\u4f5c\u3092\u72d9\u3046\u653b\u6483\u3067\u3059\u3002\u64cd\u4f5c\u306e\u9014\u4e2d\u3067\u30ad\u30fc\u30dc\u30fc\u30c9\u5165\u529b\u304c\u5fc5\u8981\u306b\u306a\u308c\u3070\u3001\u653b\u6483\u8005\u306f\u5229\u7528\u8005\u306b\u4e00\u9023\u306e\u64cd\u4f5c\u3092\u5b8c\u4e86\u3055\u305b\u306b\u304f\u304f\u306a\u308a\u307e\u3059\u3002IPA\u306f\u3001\u30de\u30a6\u30b9\u3060\u3051\u3067\u64cd\u4f5c\u3092\u7d42\u3048\u3089\u308c\u306a\u3044\u3088\u3046\u306b\u3059\u308b\u5de5\u592b\u3092\u3001\u4fdd\u967a\u7684\u306a\u5bfe\u7b56\u3068\u3057\u3066\u3082\u6319\u3052\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u305f\u3060\u3057\u3001\u518d\u5165\u529b\u3092\u6c42\u3081\u308b\u753b\u9762\u304c\u5897\u3048\u308b\u3068\u3001\u5229\u7528\u8005\u306b\u3068\u3063\u3066\u306f\u624b\u9593\u306b\u306a\u308a\u307e\u3059\u3002\u753b\u9762\u306e\u8a2d\u8a08\u3082\u5909\u3048\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<p>\u305d\u306e\u305f\u3081\u3001\u3059\u3079\u3066\u306e\u64cd\u4f5c\u306b\u9069\u7528\u3059\u308b\u306e\u3067\u306f\u306a\u304f\u3001\u9000\u4f1a\u3001\u9001\u91d1\u3001\u516c\u958b\u7bc4\u56f2\u306e\u5909\u66f4\u306e\u3088\u3046\u306a\u91cd\u8981\u306a\u64cd\u4f5c\u306b\u7d5e\u308b\u306e\u304c\u73fe\u5b9f\u7684\u3067\u3059\u3002<strong>\u30d8\u30c3\u30c0\u5bfe\u7b56\u3092\u571f\u53f0\u306b\u3057\u3066\u3001\u91cd\u8981\u306a\u64cd\u4f5c\u3060\u3051\u306b\u518d\u8a8d\u8a3c\u3092\u8ffd\u52a0\u3059\u308b<\/strong>\u3068\u8003\u3048\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<p>\u306a\u304a\u3001\u5225\u30a6\u30a3\u30f3\u30c9\u30a6\u3068\u30c0\u30d6\u30eb\u30af\u30ea\u30c3\u30af\u3092\u7d44\u307f\u5408\u308f\u305b\u308b\u300c\u30c0\u30d6\u30eb\u30af\u30ea\u30c3\u30af\u30b8\u30e3\u30c3\u30ad\u30f3\u30b0\u300d\u3068\u3044\u3046\u624b\u53e3\u306f\u3001\u57cb\u3081\u8fbc\u307f\u3092\u4f7f\u308f\u306a\u3044\u305f\u3081\u3001\u30d8\u30c3\u30c0\u306b\u3088\u308b\u5236\u9650\u3067\u306f\u9632\u3052\u307e\u305b\u3093\u3002\u91cd\u8981\u306a\u64cd\u4f5c\u306e\u76f4\u524d\u306b\u5185\u5bb9\u306e\u78ba\u8a8d\u3084\u518d\u8a8d\u8a3c\u3092\u6c42\u3081\u308b\u4ed5\u7d44\u307f\u306f\u3001\u3053\u3046\u3057\u305f\u624b\u53e3\u3078\u306e\u5099\u3048\u306b\u3082\u306a\u308a\u307e\u3059\u3002<\/p>\n<h3>WAF\u3092\u5c0e\u5165\u3057\u3066\u3044\u308b\u4f01\u696d\u306f2025\u5e74\u306719.5%\u3060\u304c\u3001WAF\u306e\u5c0e\u5165\u306f\u30af\u30ea\u30c3\u30af\u30b8\u30e3\u30c3\u30ad\u30f3\u30b0\u5bfe\u7b56\u306e\u5b9f\u65bd\u3092\u610f\u5473\u3057\u306a\u3044<\/h3>\n<p>\u7dcf\u52d9\u7701\u306e\u901a\u4fe1\u5229\u7528\u52d5\u5411\u8abf\u67fb\u306b\u3088\u308b\u3068\u3001WAF\uff08Web\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\uff09\u3092\u5c0e\u5165\u3057\u3066\u3044\u308b\u4f01\u696d\u306f\u30012024\u5e74\u304c17.4%\u3001<strong>2025\u5e74\u304c19.5%<\/strong>\u3067\u3057\u305f\u3002<\/p>\n<p>\u5bfe\u8c61\u306f\u3001\u516c\u52d9\u3092\u9664\u304f\u5bfe\u8c61\u7523\u696d\u306b\u5c5e\u3059\u308b\u5e38\u7528\u96c7\u7528\u8005100\u4eba\u4ee5\u4e0a\u306e\u4f01\u696d\uff08\u4e8b\u696d\u6240\u672c\u6240\u53c8\u306f\u5358\u72ec\u4e8b\u696d\u6240\uff09\u306e\u3046\u3061\u3001\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u5229\u7528\u4f01\u696d\u3067\u3059\u3002\u8907\u6570\u56de\u7b54\u306e\u8a2d\u554f\u3067\u30012\u6642\u70b9\u306e\u6bd4\u8f03\u306e\u305f\u3081\u5897\u52a0\u50be\u5411\u3068\u307e\u3067\u306f\u8a00\u3048\u307e\u305b\u3093\u3002<\/p>\n<p><img decoding=\"async\" alt=\"WAF\u3092\u5c0e\u5165\u3057\u3066\u3044\u308b\u4f01\u696d\u306e\u5272\u5408\uff082024\u5e7417.4%\u30012025\u5e7419.5%\u3002\u5e38\u7528\u96c7\u7528\u8005100\u4eba\u4ee5\u4e0a\u306e\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u5229\u7528\u4f01\u696d\u3001\u8907\u6570\u56de\u7b54\uff09\" src=\"https:\/\/venu-sys.co.jp\/jo-sys\/wp-content\/uploads\/sites\/2\/2026\/11\/chart2-waf-rate.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.soumu.go.jp\/main_content\/001074768.pdf\">\u7dcf\u52d9\u7701\u300c\u4ee4\u548c7\u5e74\u901a\u4fe1\u5229\u7528\u52d5\u5411\u8abf\u67fb\u306e\u7d50\u679c\uff08\u6982\u8981\uff09\u5225\u7d192\u300d<\/a>\uff0f<a target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/www.soumu.go.jp\/johotsusintokei\/statistics\/pdf\/HR202500_002.pdf\">\u7dcf\u52d9\u7701\u300c\u4ee4\u548c7\u5e74\u901a\u4fe1\u5229\u7528\u52d5\u5411\u8abf\u67fb\u5831\u544a\u66f8\uff08\u4f01\u696d\u7de8\uff09\u300d\u8abf\u67fb\u306e\u6982\u8981<\/a>\u306e\u30c7\u30fc\u30bf\u3092\u3082\u3068\u306b\u4f5c\u6210<\/p>\n<p>\u3053\u306e\u6570\u5024\u304b\u3089\u8aad\u307f\u53d6\u308c\u308b\u306e\u306f\u3001<mark>WAF\u306e\u5c0e\u5165\u7387\u3092\u3001\u30af\u30ea\u30c3\u30af\u30b8\u30e3\u30c3\u30ad\u30f3\u30b0\u5bfe\u7b56\u306e\u666e\u53ca\u5ea6\u3068\u3057\u3066\u8aad\u3080\u3053\u3068\u306f\u3067\u304d\u306a\u3044<\/mark>\u3068\u3044\u3046\u70b9\u3067\u3059\u3002\u4ee5\u4e0b\u306f\u6280\u8853\u7684\u306a\u4e00\u822c\u8ad6\u306b\u3082\u3068\u3065\u304f\u898b\u89e3\u3067\u3059\u3002<\/p>\n<p>\u30af\u30ea\u30c3\u30af\u30b8\u30e3\u30c3\u30ad\u30f3\u30b0\u306e\u30ea\u30af\u30a8\u30b9\u30c8\u306f\u901a\u5e38\u306e\u64cd\u4f5c\u3068\u540c\u3058\u5f62\u306e\u305f\u3081\u3001WAF\u3067\u306f\u898b\u5206\u3051\u306b\u304f\u3044\u3068\u8003\u3048\u3089\u308c\u307e\u3059\u3002\u5bfe\u7b56\u3082\u3001\u30b5\u30a4\u30c8\u304c\u8fd4\u3059\u30ec\u30b9\u30dd\u30f3\u30b9\u5074\u306e\u8a2d\u5b9a\u3067\u884c\u3044\u307e\u3059\u3002\u305f\u3060\u3057\u3001\u30d8\u30c3\u30c0\u3092\u4ed8\u3051\u52a0\u3048\u308b\u6a5f\u80fd\u3092\u6301\u3064WAF\u3084CDN\u3082\u3042\u308a\u3001\u7121\u95a2\u4fc2\u3068\u307e\u3067\u306f\u8a00\u3048\u307e\u305b\u3093\u3002<\/p>\n<h3>\u5bfe\u7b56\u306e\u6709\u7121\u306f\u30b5\u30a4\u30c8\u3054\u3068\u306e\u8a2d\u5b9a\u3067\u6c7a\u307e\u308b\u305f\u3081\u3001\u60c5\u30b7\u30b9\u306f\u81ea\u793e\u30b5\u30a4\u30c8\u3068\u59d4\u8a17\u5148\u30b5\u30a4\u30c8\u306e\u30d8\u30c3\u30c0\u8a2d\u5b9a\u3092\u78ba\u8a8d\u3059\u308b<\/h3>\n<p><strong>\u5bfe\u7b56\u306e\u6709\u7121\u306f\u3001\u88fd\u54c1\u306e\u4fee\u6b63\u30d1\u30c3\u30c1\u3067\u306f\u306a\u304f\u30b5\u30a4\u30c8\u3054\u3068\u306e\u8a2d\u5b9a\u3067\u6c7a\u307e\u308a\u307e\u3059<\/strong>\u3002<\/p>\n<p>IPA\u306b\u3088\u308b\u3068\u3001\u5c4a\u51fa\u306f2011\u5e74\u306b\u30a6\u30a7\u30d6\u30b5\u30a4\u30c8\u306e\u533a\u5206\u3067\u59cb\u307e\u308a\u3001\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u88fd\u54c1\u306e\u5c4a\u51fa\u306f\u53d7\u4ed8\u958b\u59cb\u304b\u30892014\u5e74\u7b2c4\u56db\u534a\u671f\u307e\u3067\u306e\u7d2f\u8a08\u30670\u4ef6\u3067\u3057\u305f\u3002<\/p>\n<p>\u3053\u3053\u304b\u3089\u8aad\u307f\u53d6\u308c\u308b\u306e\u306f\u3001\u5bfe\u7b56\u306e\u8cac\u4efb\u304c\u30b5\u30a4\u30c8\u904b\u55b6\u8005\u5074\u306b\u96c6\u307e\u308a\u3084\u3059\u3044\u3068\u3044\u3046\u70b9\u3067\u3059\u3002\u305f\u3060\u3057\u3001\u3053\u306e\u30c7\u30fc\u30bf\u306f10\u5e74\u4ee5\u4e0a\u524d\u306e\u3082\u306e\u3067\u30010\u4ef6\u306f\u88fd\u54c1\u306b\u8106\u5f31\u6027\u304c\u7121\u3044\u3053\u3068\u3082\u793a\u3057\u307e\u305b\u3093\u3002<\/p>\n<p>\u81ea\u793e\u3084\u59d4\u8a17\u5148\u306e\u30b5\u30a4\u30c8\u3067\u3001\u6b21\u306e\u70b9\u3092\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<ul>\n<li>\u30ed\u30b0\u30a4\u30f3\u5f8c\u306e\u753b\u9762\u306bX-Frame-Options\u304bframe-ancestors\u304c\u51fa\u529b\u3055\u308c\u3066\u3044\u308b\u304b<\/li>\n<li>\u5916\u90e8\u3078\u306e\u57cb\u3081\u8fbc\u307f\u304c\u672c\u5f53\u306b\u5fc5\u8981\u306a\u753b\u9762\u306f\u3069\u308c\u304b<\/li>\n<li>\u9000\u4f1a\u306a\u3069\u306e\u91cd\u8981\u306a\u64cd\u4f5c\u3067\u518d\u8a8d\u8a3c\u3092\u6c42\u3081\u3066\u3044\u308b\u304b<\/li>\n<li>\u59d4\u8a17\u5148\u3068\u306e\u5951\u7d04\u30fb\u4ed5\u69d8\u66f8\u3067\u5bfe\u7b56\u3092\u78ba\u8a8d\u3057\u3066\u3044\u308b\u304b<\/li>\n<li>\u8106\u5f31\u6027\u8a3a\u65ad\u306e\u5bfe\u8c61\u306b\u30af\u30ea\u30c3\u30af\u30b8\u30e3\u30c3\u30ad\u30f3\u30b0\u3092\u542b\u3081\u3066\u3044\u308b\u304b<\/li>\n<\/ul>\n<p><mark>\u81ea\u793e\u30b5\u30a4\u30c8\u306e\u30d8\u30c3\u30c0\u8a2d\u5b9a\u306f\u3001\u60c5\u30b7\u30b9\u81ea\u8eab\u304c\u78ba\u304b\u3081\u308b<\/mark>\u3088\u3046\u306b\u3057\u307e\u3057\u3087\u3046\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\/vuln\/websecurity\/clickjacking.html\">IPA\u300c\u5b89\u5168\u306a\u30a6\u30a7\u30d6\u30b5\u30a4\u30c8\u306e\u4f5c\u308a\u65b9\u300d\u30af\u30ea\u30c3\u30af\u30b8\u30e3\u30c3\u30ad\u30f3\u30b0<\/a>\uff0f<a target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/cheatsheetseries.owasp.org\/cheatsheets\/Clickjacking_Defense_Cheat_Sheet.html\">OWASP\u300cClickjacking Defense Cheat Sheet\u300d<\/a>\uff0f<a target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/www.w3.org\/TR\/CSP3\/\">W3C\u300cContent Security Policy Level 3\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\u306e\u7d50\u679c\uff08\u6982\u8981\uff09\u5225\u7d192\u300d<\/a>\uff0f<a target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/www.soumu.go.jp\/johotsusintokei\/statistics\/pdf\/HR202500_002.pdf\">\u7dcf\u52d9\u7701\u300c\u4ee4\u548c7\u5e74\u901a\u4fe1\u5229\u7528\u52d5\u5411\u8abf\u67fb\u5831\u544a\u66f8\uff08\u4f01\u696d\u7de8\uff09\u300d\u8abf\u67fb\u306e\u6982\u8981<\/a><\/p>\n<h2>\u5229\u7528\u8005\u5074\u3067\u306f\u3001\u30ed\u30b0\u30a4\u30f3\u3057\u305f\u307e\u307e\u4e0d\u5be9\u306a\u30ea\u30f3\u30af\u3092\u958b\u304b\u306a\u3044\u3053\u3068\u3068\u3001\u30d6\u30e9\u30a6\u30b6\u3092\u6700\u65b0\u306b\u4fdd\u3064\u3053\u3068\u304c\u88ab\u5bb3\u3092\u6e1b\u3089\u3059<\/h2>\n<p><img decoding=\"async\" alt=\"\u5229\u7528\u8005\u5074\u306e\u6ce8\u610f\u70b9\" src=\"https:\/\/venu-sys.co.jp\/jo-sys\/wp-content\/uploads\/sites\/2\/2026\/11\/h2-4-1.png\" \/><\/p>\n<p>\u30af\u30ea\u30c3\u30af\u30b8\u30e3\u30c3\u30ad\u30f3\u30b0\u306f\u3001<strong>\u5229\u7528\u8005\u304c\u30ed\u30b0\u30a4\u30f3\u3057\u3066\u3044\u308b\u72b6\u614b\u3092\u524d\u63d0\u306b\u3057\u305f\u653b\u6483<\/strong>\u3067\u3059\u3002\u305d\u306e\u305f\u3081\u3001\u5229\u7528\u8005\u5074\u306e\u6ce8\u610f\u3067\u3082\u88ab\u5bb3\u3092\u6e1b\u3089\u305b\u307e\u3059\u3002<\/p>\n<p>\u30ed\u30b0\u30a4\u30f3\u3057\u3066\u3044\u306a\u3051\u308c\u3070\u3001\u7f60\u30b5\u30a4\u30c8\u306b\u8aad\u307f\u8fbc\u307e\u308c\u305f\u6b63\u898f\u30b5\u30a4\u30c8\u3067\u306f\u91cd\u8981\u306a\u64cd\u4f5c\u304c\u3067\u304d\u307e\u305b\u3093\u3002\u307e\u305f\u3001\u57cb\u3081\u8fbc\u307f\u306e\u5236\u9650\u306f\u30d6\u30e9\u30a6\u30b6\u304c\u6307\u793a\u3092\u5b88\u308b\u3053\u3068\u3067\u6a5f\u80fd\u3059\u308b\u305f\u3081\u3001\u30d6\u30e9\u30a6\u30b6\u306e\u72b6\u614b\u3082\u5927\u5207\u3067\u3059\u3002\u793e\u54e1\u306b\u306f\u3001\u6b21\u306e4\u70b9\u3092\u610f\u8b58\u3057\u3066\u3082\u3089\u3044\u307e\u3057\u3087\u3046\u3002<\/p>\n<ul>\n<li>\u4f7f\u3044\u7d42\u308f\u3063\u305fWeb\u30b5\u30fc\u30d3\u30b9\u304b\u3089\u306f\u3001\u3053\u307e\u3081\u306b\u30ed\u30b0\u30a2\u30a6\u30c8\u3059\u308b<\/li>\n<li>\u30e1\u30fc\u30eb\u3084SNS\u306e\u300c\u5f53\u9078\u300d\u300c\u7121\u6599\u300d\u3068\u3044\u3063\u305f\u30ea\u30f3\u30af\u304b\u3089\u3001\u30ed\u30b0\u30a4\u30f3\u304c\u5fc5\u8981\u306a\u30b5\u30fc\u30d3\u30b9\u3092\u958b\u304b\u306a\u3044<\/li>\n<li>\u30d6\u30e9\u30a6\u30b6\u3092\u6700\u65b0\u7248\u306b\u4fdd\u3064\uff08\u53e4\u3044\u30d6\u30e9\u30a6\u30b6\u306f\u3001X-Frame-Options\u306b\u5bfe\u5fdc\u3057\u3066\u3044\u306a\u3044\u5834\u5408\u304c\u3042\u308b\uff09<\/li>\n<li>\u898b\u899a\u3048\u306e\u306a\u3044\u8a2d\u5b9a\u5909\u66f4\u3084\u6295\u7a3f\u306b\u6c17\u4ed8\u3044\u305f\u3089\u3001\u3059\u3050\u306b\u60c5\u30b7\u30b9\u3078\u9023\u7d61\u3059\u308b<\/li>\n<\/ul>\n<p>\u3069\u308c\u3082\u7279\u5225\u306a\u77e5\u8b58\u304c\u7121\u304f\u3066\u3082\u5b9f\u884c\u3067\u304d\u308b\u5185\u5bb9\u3067\u3059\u3002\u4e00\u65b9\u3067\u3001\u5229\u7528\u8005\u306e\u6ce8\u610f\u3060\u3051\u3067\u653b\u6483\u3092\u5b8c\u5168\u306b\u9632\u3050\u3053\u3068\u306f\u3067\u304d\u307e\u305b\u3093\u3002<\/p>\n<p><strong>\u30b5\u30a4\u30c8\u5074\u306e\u5bfe\u7b56\u3068\u5229\u7528\u8005\u5074\u306e\u6ce8\u610f\u3092\u7d44\u307f\u5408\u308f\u305b\u308b<\/strong>\u3053\u3068\u304c\u57fa\u672c\u3067\u3059\u3002\u60c5\u30b7\u30b9\u306e\u65b9\u306f\u3001\u3053\u308c\u3089\u306e\u9805\u76ee\u3092\u305d\u306e\u307e\u307e\u793e\u5185\u3078\u306e\u6ce8\u610f\u559a\u8d77\u306b\u4f7f\u3063\u3066\u307f\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<h2>\u307e\u3068\u3081\uff1a\u30af\u30ea\u30c3\u30af\u30b8\u30e3\u30c3\u30ad\u30f3\u30b0\u306f\u7d71\u8a08\u306b\u8868\u308c\u306b\u304f\u3044\u305f\u3081\u3001\u81ea\u793e\u30b5\u30a4\u30c8\u306e\u30d8\u30c3\u30c0\u8a2d\u5b9a\u3067\u5bfe\u7b56\u3092\u78ba\u304b\u3081\u308b<\/h2>\n<p><img decoding=\"async\" alt=\"\u307e\u3068\u3081\uff1a\u78ba\u8a8d\u3059\u3079\u304d\u3053\u3068\" src=\"https:\/\/venu-sys.co.jp\/jo-sys\/wp-content\/uploads\/sites\/2\/2026\/11\/h2-5-1.png\" \/><\/p>\n<p>\u30af\u30ea\u30c3\u30af\u30b8\u30e3\u30c3\u30ad\u30f3\u30b0\u306f\u3001\u900f\u660e\u306b\u3057\u305f\u6b63\u898f\u30b5\u30a4\u30c8\u3092\u7f60\u30da\u30fc\u30b8\u306b\u91cd\u306d\u3066\u30af\u30ea\u30c3\u30af\u3055\u305b\u308b\u653b\u6483\u3067\u3001CSRF\u3068\u306f\u5bfe\u7b56\u304c\u5225\u7269\u3067\u3059\u3002<\/p>\n<p>IPA\u306e\u5c4a\u51fa\u306f2011\u5e74\u306b\u59cb\u307e\u308a\u3001\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u88fd\u54c1\u306e\u5c4a\u51fa\u306f2014\u5e74\u7b2c4\u56db\u534a\u671f\u307e\u3067\u306e\u7d2f\u8a08\u30670\u4ef6\u3067\u3057\u305f\u3002\u7d71\u8a08\u306b\u8868\u308c\u306b\u304f\u304f\u3066\u3082\u3001\u5f8c\u56de\u3057\u306b\u3059\u308b\u7406\u7531\u306b\u306f\u306a\u308a\u307e\u305b\u3093\u3002<\/p>\n<p>2025\u5e74\u306eWAF\u5c0e\u5165\u4f01\u696d\u306f19.5%\uff08\u5e38\u7528\u96c7\u7528\u8005100\u4eba\u4ee5\u4e0a\uff09\u3067\u3059\u304c\u3001\u5bfe\u7b56\u306e\u666e\u53ca\u5ea6\u306f\u793a\u3057\u307e\u305b\u3093\u3002<mark>\u5bfe\u7b56\u306f\u81ea\u793e\u30b5\u30a4\u30c8\u306e\u30d8\u30c3\u30c0\u8a2d\u5b9a\u3067\u78ba\u304b\u3081\u307e\u3057\u3087\u3046\u3002<\/mark><\/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>\u4ed5\u7d44\u307f: \u900f\u660e\u306b\u3057\u305f\u6b63\u898f\u30b5\u30a4\u30c8\u306e\u4e0a\u3067\u3001\u5229\u7528\u8005\u306b\u30af\u30ea\u30c3\u30af\u3055\u305b\u308b<\/li>\n<li>CSRF\u3068\u306f\u653b\u6483\u306e\u624b\u6bb5\u3082\u5bfe\u7b56\u3082\u7570\u306a\u308b\u305f\u3081\u3001\u5225\u3005\u306b\u5bfe\u7b56\u3059\u308b<\/li>\n<li>\u5c4a\u51fa\u7d71\u8a08\u306b\u8868\u308c\u306b\u304f\u3044\u304c\u3001\u4ef6\u6570\u306e\u5c11\u306a\u3055\u306f\u5f8c\u56de\u3057\u306b\u3059\u308b\u7406\u7531\u306b\u306a\u3089\u306a\u3044<\/li>\n<li>\u5bfe\u7b56\u306e\u4e2d\u5fc3\u306fX-Frame-Options\u3068frame-ancestors\u3002WAF\u306e\u5c0e\u5165\u3068\u306f\u5225\u306b\u78ba\u8a8d\u3059\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\/vuln\/websecurity\/clickjacking.html\">IPA\u300c\u5b89\u5168\u306a\u30a6\u30a7\u30d6\u30b5\u30a4\u30c8\u306e\u4f5c\u308a\u65b9\u300d\u30af\u30ea\u30c3\u30af\u30b8\u30e3\u30c3\u30ad\u30f3\u30b0<\/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\u306e\u7d50\u679c\uff08\u6982\u8981\uff09\u5225\u7d192\u300d<\/a>\uff0f<a target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/www.soumu.go.jp\/johotsusintokei\/statistics\/pdf\/HR202500_002.pdf\">\u7dcf\u52d9\u7701\u300c\u4ee4\u548c7\u5e74\u901a\u4fe1\u5229\u7528\u52d5\u5411\u8abf\u67fb\u5831\u544a\u66f8\uff08\u4f01\u696d\u7de8\uff09\u300d\u8abf\u67fb\u306e\u6982\u8981<\/a><\/p>\n<h2>Web\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u306e\u57fa\u790e\u3092\u5b66\u3076\u306a\u3089\u300c\u60c5\u30b7\u30b9\u30ab\u30ec\u30c3\u30b8\u300d<\/h2>\n<p style=\"text-align:center;margin:1.5em 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>\u30af\u30ea\u30c3\u30af\u30b8\u30e3\u30c3\u30ad\u30f3\u30b0\u306e\u3088\u3046\u306b\u7d71\u8a08\u306b\u8868\u308c\u306b\u304f\u3044\u8105\u5a01\u306f\u3001\u62c5\u5f53\u8005\u304c\u4ed5\u7d44\u307f\u3092\u7406\u89e3\u3057\u3066\u3044\u308b\u304b\u3069\u3046\u304b\u3067\u78ba\u8a8d\u306e\u8cea\u304c\u5909\u308f\u308a\u307e\u3059\u3002\u3068\u306f\u3044\u3048\u3001\u65b0\u4efb\u3084\u3072\u3068\u308a\u60c5\u30b7\u30b9\u306e\u65b9\u307b\u3069\u3001\u307e\u3068\u307e\u3063\u305f\u5b66\u7fd2\u306e\u6642\u9593\u306f\u53d6\u308a\u306b\u304f\u3044\u3067\u3059\u3088\u306d\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\u6570\u5206\u306e\u52d5\u753b\u3068\u5c0f\u30c6\u30b9\u30c8\u3067\u3001\u696d\u52d9\u306e\u5408\u9593\u306b\u5c11\u3057\u305a\u3064\u5b66\u3079\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\u9032\u3081\u308b\u30de\u30a4\u30af\u30ed\u30e9\u30fc\u30cb\u30f3\u30b0\u5f62\u5f0f<\/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\u304a\u3088\u305d10\u5206\u3067\u5b8c\u4e86\u3057\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<\/p>\n<ul>\n<li><a target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/www.ipa.go.jp\/security\/vuln\/websecurity\/clickjacking.html\">IPA\u300c\u5b89\u5168\u306a\u30a6\u30a7\u30d6\u30b5\u30a4\u30c8\u306e\u4f5c\u308a\u65b9\u300d\u30af\u30ea\u30c3\u30af\u30b8\u30e3\u30c3\u30ad\u30f3\u30b0<\/a><\/li>\n<li><a target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/www.ipa.go.jp\/security\/reports\/vuln\/software\/2023q4.html\">IPA\u300c\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u7b49\u306e\u8106\u5f31\u6027\u95a2\u9023\u60c5\u5831\u306b\u95a2\u3059\u308b\u5c4a\u51fa\u72b6\u6cc1\uff3b2023\u5e74\u7b2c4\u56db\u534a\u671f\uff0810\u6708\u301c12\u6708\uff09\uff3d\u300d<\/a><\/li>\n<li><a target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/www.ipa.go.jp\/security\/reports\/vuln\/software\/2024q4.html\">IPA\u300c\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u7b49\u306e\u8106\u5f31\u6027\u95a2\u9023\u60c5\u5831\u306b\u95a2\u3059\u308b\u5c4a\u51fa\u72b6\u6cc1\uff3b2024\u5e74\u7b2c4\u56db\u534a\u671f\uff0810\u6708\u301c12\u6708\uff09\uff3d\u300d<\/a><\/li>\n<li><a target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/www.ipa.go.jp\/security\/reports\/vuln\/software\/2025q4.html\">IPA\u300c\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u7b49\u306e\u8106\u5f31\u6027\u95a2\u9023\u60c5\u5831\u306b\u95a2\u3059\u308b\u5c4a\u51fa\u72b6\u6cc1\uff3b2025\u5e74\u7b2c4\u56db\u534a\u671f\uff0810\u6708\u301c12\u6708\uff09\uff3d\u300d<\/a><\/li>\n<li><a target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/www.ipa.go.jp\/security\/reports\/vuln\/software\/omgdg50000007gdr-att\/vuln_software_report_2025q4.pdf\">IPA\u300c\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u7b49\u306e\u8106\u5f31\u6027\u95a2\u9023\u60c5\u5831\u306b\u95a2\u3059\u308b\u5c4a\u51fa\u72b6\u6cc1\uff3b2025\u5e74\u7b2c4\u56db\u534a\u671f\uff3d\u300d\u30ec\u30dd\u30fc\u30c8\uff08PDF\uff09<\/a><\/li>\n<li><a target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/www.ipa.go.jp\/security\/reports\/vuln\/software\/rcu1hd00000162jv-att\/vuln_software_report_2026q2.pdf\">IPA\u300c\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u7b49\u306e\u8106\u5f31\u6027\u95a2\u9023\u60c5\u5831\u306b\u95a2\u3059\u308b\u5c4a\u51fa\u72b6\u6cc1\uff3b2026\u5e74\u7b2c2\u56db\u534a\u671f\uff3d\u300d\u30ec\u30dd\u30fc\u30c8\uff08PDF\uff09<\/a><\/li>\n<li><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\u300d\u7d44\u7e54\u7de8 \u89e3\u8aac\u66f8<\/a><\/li>\n<li><a target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/cheatsheetseries.owasp.org\/cheatsheets\/Clickjacking_Defense_Cheat_Sheet.html\">OWASP\u300cClickjacking Defense Cheat Sheet\u300d<\/a><\/li>\n<li><a target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/www.w3.org\/TR\/CSP3\/\">W3C\u300cContent Security Policy Level 3\u300d<\/a><\/li>\n<li><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\u306e\u7d50\u679c\uff08\u6982\u8981\uff09\u5225\u7d192\u300d\uff08\u4ee4\u548c6\u5e74\u30fb\u4ee4\u548c7\u5e74\u306e\u6bd4\u8f03\u3092\u542b\u3080\uff09<\/a><\/li>\n<li><a target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/www.soumu.go.jp\/johotsusintokei\/statistics\/pdf\/HR202500_002.pdf\">\u7dcf\u52d9\u7701\u300c\u4ee4\u548c7\u5e74\u901a\u4fe1\u5229\u7528\u52d5\u5411\u8abf\u67fb\u5831\u544a\u66f8\uff08\u4f01\u696d\u7de8\uff09\u300d\u8abf\u67fb\u306e\u6982\u8981<\/a><\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>\u30af\u30ea\u30c3\u30af\u30b8\u30e3\u30c3\u30ad\u30f3\u30b0\u3068\u306f\u3001\u900f\u660e\u306b\u3057\u305f\u6b63\u898f\u30b5\u30a4\u30c8\u3092\u7f60\u30da\u30fc\u30b8\u306b\u91cd\u306d\u3001\u5229\u7528\u8005\u306b\u610f\u56f3\u3057\u306a\u3044\u30af\u30ea\u30c3\u30af\u3092\u3055\u305b\u308b\u653b\u6483\u3067\u3059\u3002\u4ed5\u7d44\u307f\u3068CSRF\u3068\u306e\u9055\u3044\u3001X-Frame-Options\u306a\u3069\u306b\u3088\u308b\u5bfe\u7b56\u3001\u5229\u7528\u8005\u5074\u306e\u6ce8\u610f\u70b9\u3092\u3001IPA\u306e\u5c4a\u51fa\u5236\u5ea6\u3084\u7dcf\u52d9\u7701\u306eWAF\u5c0e\u5165\u7387\u30c7\u30fc\u30bf\u3068\u3042\u308f\u305b\u3066\u89e3\u8aac\u3057\u307e\u3059\u3002<\/p>\n","protected":false},"author":1,"featured_media":11358,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"swell_btn_cv_data":"","footnotes":""},"categories":[15,41],"tags":[],"class_list":["post-11356","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-security","category-glossary"],"jetpack_featured_media_url":"https:\/\/venu-sys.co.jp\/jo-sys\/wp-content\/uploads\/sites\/2\/2026\/11\/eyecatch.png","_links":{"self":[{"href":"https:\/\/venu-sys.co.jp\/jo-sys\/wp-json\/wp\/v2\/posts\/11356","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/venu-sys.co.jp\/jo-sys\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/venu-sys.co.jp\/jo-sys\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/venu-sys.co.jp\/jo-sys\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/venu-sys.co.jp\/jo-sys\/wp-json\/wp\/v2\/comments?post=11356"}],"version-history":[{"count":1,"href":"https:\/\/venu-sys.co.jp\/jo-sys\/wp-json\/wp\/v2\/posts\/11356\/revisions"}],"predecessor-version":[{"id":11357,"href":"https:\/\/venu-sys.co.jp\/jo-sys\/wp-json\/wp\/v2\/posts\/11356\/revisions\/11357"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/venu-sys.co.jp\/jo-sys\/wp-json\/wp\/v2\/media\/11358"}],"wp:attachment":[{"href":"https:\/\/venu-sys.co.jp\/jo-sys\/wp-json\/wp\/v2\/media?parent=11356"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/venu-sys.co.jp\/jo-sys\/wp-json\/wp\/v2\/categories?post=11356"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/venu-sys.co.jp\/jo-sys\/wp-json\/wp\/v2\/tags?post=11356"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}