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<strong>\u30c9\u30e1\u30a4\u30f3\u30cf\u30a4\u30b8\u30e3\u30c3\u30af<\/strong> \u5177\u4f53\u7684\u306b\u4f55\u304c\u8d77\u3053\u308b\u306e\u304b\u3001\u72af\u7f6a\u8005\u304c\u3069\u306e\u3088\u3046\u306a\u30b2\u30fc\u30c8\u30a6\u30a7\u30a4\u3092\u4f7f\u3046\u306e\u304b\u3001\u305d\u3057\u3066\u307b\u3093\u306e\u5c11\u3057\u306e\u52b9\u679c\u7684\u306a\u30b9\u30c6\u30c3\u30d7\u3067\u30ea\u30b9\u30af\u3092\u5287\u7684\u306b\u6e1b\u3089\u3059\u65b9\u6cd5\u3092\u8aac\u660e\u3057\u307e\u3059\u3002\u305d\u306e\u305f\u3081\u306b\u3001\u5178\u578b\u7684\u306a\u653b\u6483\u3092\u5206\u985e\u3057\u3001\u30ec\u30b8\u30b9\u30c8\u30e9\u306e\u4fdd\u8b77\u3001DNS\u306e\u5805\u7262\u5316\u3001\u304a\u3088\u3073\u5373\u6642\u306e\u5bfe\u7b56\u306b\u3064\u3044\u3066\u8aac\u660e\u3057\u307e\u3059\u3002 <strong>\u30c9\u30e1\u30a4\u30f3\u30fb\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3<\/strong> \u65e5\u5e38\u751f\u6d3b\u306e\u4e2d\u3067\u3002.<\/p>\n\n<h2>\u4e2d\u5fc3\u70b9<\/h2>\n\n<ul>\n  <li><strong>\u653b\u6483\u30d9\u30af\u30c8\u30eb<\/strong>\u76d7\u307e\u308c\u305f\u30d1\u30b9\u30ef\u30fc\u30c9\u3001\u30d5\u30a3\u30c3\u30b7\u30f3\u30b0\u3001\u30bd\u30fc\u30b7\u30e3\u30eb\u30a8\u30f3\u30b8\u30cb\u30a2\u30ea\u30f3\u30b0\u3001\u4e0d\u6b63\u306aDNS\u59d4\u4efb<\/li>\n  <li><strong>\u7d50\u679c<\/strong>\u96fb\u5b50\u30e1\u30fc\u30eb\u4e57\u3063\u53d6\u308a\u3001\u652f\u6255\u3044\u8a50\u6b3a\u3001\u98a8\u8a55\u88ab\u5bb3\u3001\u30a6\u30a7\u30d6\u30b5\u30a4\u30c8\u969c\u5bb3<\/li>\n  <li><strong>\u767b\u9332\u8005\u4fdd\u8b77<\/strong>2FA\u3001\u30ec\u30b8\u30b9\u30c8\u30e9\/\u30ec\u30b8\u30b9\u30c8\u30ea\u30ed\u30c3\u30af\u3001IP\u5236\u9650\u3001\u30a2\u30e9\u30fc\u30c8\u6a5f\u80fd<\/li>\n  <li><strong>DNA\u306e\u786c\u5316<\/strong>DNSSEC\u3001\u30af\u30ea\u30fc\u30f3\u30be\u30fc\u30f3\u7ba1\u7406\u3001NS\u5909\u66f4\u306e\u76e3\u8996<\/li>\n  <li><strong>\u30a4\u30f3\u30b9\u30bf\u30f3\u30c8\u30fb\u30d7\u30e9\u30f3<\/strong>\u767b\u9332\u6a5f\u95a2\u3078\u306e\u9023\u7d61\u3001\u30a2\u30af\u30bb\u30b9\u306e\u78ba\u4fdd\u3001\u5909\u66f4\u306e\u53d6\u308a\u6d88\u3057\u3001\u8a3c\u62e0\u306e\u53ce\u96c6<\/li>\n<\/ul>\n\n\n<figure class=\"wp-block-image size-full is-resized\">\n  <img fetchpriority=\"high\" decoding=\"async\" src=\"https:\/\/webhosting.de\/wp-content\/uploads\/2026\/02\/domain-sicherheit-buero-4931.png\" alt=\"\" width=\"1536\" height=\"1024\"\/>\n<\/figure>\n\n\n<h2>\u30c9\u30e1\u30a4\u30f3\u30fb\u30cf\u30a4\u30b8\u30e3\u30c3\u30af\u3068\u306f\u4f55\u304b\uff1f<\/h2>\n\n<p>\u30c9\u30e1\u30a4\u30f3\u30fb\u30cf\u30a4\u30b8\u30e3\u30c3\u30af\u306e\u5834\u5408\u3001\u653b\u6483\u8005\u306f\u30c9\u30e1\u30a4\u30f3\u3092\u5b8c\u5168\u306b\u4e57\u3063\u53d6\u308b\u3002 <strong>\u30c9\u30e1\u30a4\u30f3\u7ba1\u7406<\/strong> 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<strong>\u79fb\u7c4d\u306e\u7981\u6b62<\/strong>, \u306a\u305c\u306a\u3089\u3001\u3053\u308c\u3067\u306f\u8a8d\u53ef\u3055\u308c\u3066\u3044\u306a\u3044\u30d7\u30ed\u30d0\u30a4\u30c0\u30fc\u306e\u5909\u66f4\u304c\u3088\u308a\u8fc5\u901f\u306b\u884c\u308f\u308c\u3066\u3057\u307e\u3046\u304b\u3089\u3060\u3002.<\/p>\n\n\n<figure class=\"wp-block-image size-full is-resized\">\n  <img decoding=\"async\" src=\"https:\/\/webhosting.de\/wp-content\/uploads\/2026\/02\/DomainSecurityMeeting1234.png\" alt=\"\" width=\"1536\" height=\"1024\"\/>\n<\/figure>\n\n\n<h2>DNS\u306e\u8aa4\u7528\uff1a\u300c\u30b7\u30c3\u30c6\u30a3\u30f3\u30b0\u30c0\u30c3\u30af\u300d\u306e\u8aac\u660e<\/h2>\n\n<p>\u201e\u300c\u30b7\u30c3\u30c6\u30a3\u30f3\u30b0\u30c0\u30c3\u30af\u300d\u306f\u3001\u30c7\u30ea\u30b2\u30fc\u30b7\u30e7\u30f3\u304c\u3001\u30af\u30a8\u30ea\u306b\u6b63\u3057\u304f\u5fdc\u7b54\u3057\u306a\u3044\u304b\u3001\u307e\u3063\u305f\u304f\u8cac\u4efb\u3092\u8ca0\u308f\u306a\u3044\u6a29\u5a01\u30cd\u30fc\u30e0\u30b5\u30fc\u30d0\u30fc\u3092\u6307\u3059\u5834\u5408\u306b\u767a\u751f\u3059\u308b\u3002 <strong>\u8650\u5f85<\/strong> 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<strong>\u30cd\u30fc\u30e0\u30b5\u30fc\u30d0\u30fc<\/strong> \u30b3\u30f3\u30b9\u30bf\u30f3\u30c8\u306b\u53cd\u5fdc\u3059\u308b\u3002.<\/p>\n\n<h2>E\u30e1\u30fc\u30eb\u3068\u30d6\u30e9\u30f3\u30c9\u3078\u306e\u5f71\u97ff<\/h2>\n\n<p>\u3042\u308b\u30c9\u30e1\u30a4\u30f3\u3092\u652f\u914d\u3057\u3066\u3044\u308b\u4eba\u7269\u306f\u3001\u3057\u3070\u3057\u3070\u305d\u306e\u30c9\u30e1\u30a4\u30f3\u5168\u4f53\u3092\u8aad\u3093\u3060\u308a\u3001\u64cd\u4f5c\u3057\u305f\u308a\u3059\u308b\u3002 <strong>\u96fb\u5b50\u30e1\u30fc\u30eb<\/strong>-\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u306b\u306f\u3001\u6a5f\u5bc6\u6027\u306e\u9ad8\u3044\u9867\u5ba2\u30c7\u30fc\u30bf\u3084\u8ca1\u52d9\u5951\u7d04\u3082\u542b\u307e\u308c\u308b\u3002\u305d\u306e\u7d50\u679c\u3001\u4e0d\u6b63\u306a\u8acb\u6c42\u66f8\u304c\u767a\u884c\u3055\u308c\u3001\u8ab0\u3082\u3059\u3050\u306b\u4e0d\u6b63\u306b\u6c17\u3065\u304b\u306a\u3044\u307e\u307e\u7b2c\u4e09\u8005\u306e\u53e3\u5ea7\u306b\u652f\u6255\u3044\u304c\u884c\u308f\u308c\u308b\u3002\u307e\u305f\u3001\u6b3a\u779e\u7684\u306a\u30a6\u30a7\u30d6\u30b5\u30a4\u30c8\u3001\u611f\u67d3\u3057\u305f\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u3001\u30d5\u30a3\u30c3\u30b7\u30f3\u30b0\u30b5\u30a4\u30c8\u306e\u8105\u5a01\u3082\u3042\u308a\u3001\u9867\u5ba2\u306e\u4fe1\u983c\u306b\u6c38\u7d9a\u7684\u306a\u30c0\u30e1\u30fc\u30b8\u3092\u4e0e\u3048\u307e\u3059\u3002\u691c\u7d22\u30a8\u30f3\u30b8\u30f3\u306f\u4fb5\u5bb3\u3055\u308c\u305f\u30bf\u30fc\u30b2\u30c3\u30c8\u306e\u4fa1\u5024\u3092\u4e0b\u3052\u3001\u77e5\u540d\u5ea6\u3084\u58f2\u4e0a\u306b\u5f71\u97ff\u3092\u4e0e\u3048\u308b\u3002\u3053\u3053\u3067\u306f\u3001\u76f4\u63a5\u7684\u306a\u56de\u5fa9\u30b3\u30b9\u30c8\u3060\u3051\u3067\u306a\u304f\u3001\u6a5f\u4f1a\u640d\u5931\u3084\u56de\u5fa9\u306e\u9045\u308c\u3092\u8a08\u7b97\u306b\u5165\u308c\u3066\u3044\u308b\u3002 <strong>\u8a55\u5224<\/strong>.<\/p>\n\n<h2>\u767b\u9332\u8005\u4fdd\u8b77\u306e\u5b9f\u969b<\/h2>\n\n<p>\u79c1\u306f\u4e00\u8cab\u3057\u3066\u3001\u9069\u5207\u306a\u30d7\u30ed\u30d0\u30a4\u30c0\u30fc\u30672FA\u3001IP\u5236\u9650\u3001\u30ec\u30b8\u30b9\u30c8\u30ea\u30fb\u30ed\u30c3\u30af\u3092\u6709\u52b9\u306b\u3057\u3001\u4fb5\u5bb3\u3055\u308c\u305f\u30a2\u30ab\u30a6\u30f3\u30c8\u3067\u3042\u3063\u3066\u3082\u3001\u305d\u306e\u30a2\u30ab\u30a6\u30f3\u30c8\u306b\u76f4\u63a5\u5909\u66f4\u3092\u52a0\u3048\u308b\u3053\u3068\u304c\u3067\u304d\u306a\u3044\u3088\u3046\u306b\u3057\u3066\u3044\u307e\u3059\u3002 <strong>\u30c9\u30e1\u30a4\u30f3\u30b9\u30c6\u30fc\u30bf\u30b9<\/strong> \u3092\u8a31\u53ef\u3057\u307e\u3059\u3002\u96fb\u5b50\u30e1\u30fc\u30eb\u3084\u30a2\u30d7\u30ea\u306b\u3088\u308b\u5909\u66f4\u30a2\u30e9\u30fc\u30c8\u306f\u3001\u4ecb\u5165\u3092\u5373\u5ea7\u306b\u6b62\u3081\u308b\u305f\u3081\u306e\u8cb4\u91cd\u306a\u6642\u9593\u3092\u4e0e\u3048\u3066\u304f\u308c\u308b\u3002\u9069\u5207\u306b\u8a2d\u5b9a\u3055\u308c\u305fclientTransferProhibited\u30d5\u30e9\u30b0\u306f\u3001\u30d7\u30ed\u30d0\u30a4\u30c0\u30fc\u306e\u8fc5\u901f\u306a\u5909\u66f4\u3092\u78ba\u5b9f\u306b\u9045\u3089\u305b\u307e\u3059\u3002\u307e\u305f\u3001\u72af\u7f6a\u8005\u304c\u30d0\u30c3\u30af\u30c9\u30a2\u3092\u8a2d\u7f6e\u3059\u308b\u306e\u3092\u9632\u3050\u305f\u3081\u3001\u5b9a\u671f\u7684\u306b\u9023\u7d61\u5148\u3068\u5fa9\u65e7\u30c7\u30fc\u30bf\u3092\u30c1\u30a7\u30c3\u30af\u3057\u3066\u3044\u307e\u3059\u3002\u8ee2\u9001\u3092\u5b89\u5168\u306b\u8a08\u753b\u3059\u308b\u306a\u3089\u3001\u4ee5\u4e0b\u306e\u30ac\u30a4\u30c9\u3067\u843d\u3068\u3057\u7a74\u3092\u907f\u3051\u308b\u3053\u3068\u3082\u3067\u304d\u307e\u3059\u3002 <a href=\"https:\/\/webhosting.de\/ja\/%e3%83%89%e3%83%a1%e3%82%a4%e3%83%b3%e7%a7%bb%e7%ae%a1%e3%83%9f%e3%82%b9%e3%82%92%e9%98%b2%e3%81%90-%e7%a7%bb%e8%bb%a2%e3%82%bb%e3%82%ad%e3%83%a5%e3%83%aa%e3%83%86%e3%82%a3%e3%82%ac%e3%82%a4%e3%83%89\/\">\u30c9\u30e1\u30a4\u30f3\u79fb\u7ba1\u30a8\u30e9\u30fc<\/a>, \u305d\u306e\u7d50\u679c\u3001\u4e0d\u5fc5\u8981\u306a <strong>\u30ea\u30b9\u30af<\/strong> \u3092\u6392\u9664\u3057\u305f\u3002.<\/p>\n\n\n<figure class=\"wp-block-image size-full is-resized\">\n  <img decoding=\"async\" src=\"https:\/\/webhosting.de\/wp-content\/uploads\/2026\/02\/domain-hijacking-schutz-7814.png\" alt=\"\" width=\"1536\" height=\"1024\"\/>\n<\/figure>\n\n\n<h2>\u4fdd\u8b77\u63aa\u7f6e\u30a2\u30ab\u30a6\u30f3\u30c8\u3001\u30ed\u30c3\u30af\u3001\u30a2\u30e9\u30fc\u30e0<\/h2>\n\n<p>\u79c1\u306f\u30e6\u30cb\u30fc\u30af\u3067\u9577\u3044\u30d1\u30b9\u30ef\u30fc\u30c9\u3092\u8a2d\u5b9a\u3057\u3001\u305d\u308c\u3092\u30de\u30cd\u30fc\u30b8\u30e3\u30fc\u306b\u4fdd\u5b58\u3057\u3066\u3001\u6b21\u306e\u3088\u3046\u306b\u4f7f\u3063\u3066\u3044\u308b\u3002 <strong>\u30cf\u30fc\u30c9\u30a6\u30a7\u30a2\u30ad\u30fc<\/strong> \u30d5\u30a3\u30c3\u30b7\u30f3\u30b0\u9632\u6b62\u306e\u305f\u3081\u306eMFA\u30ec\u30b8\u30b9\u30c8\u30e9\u30ed\u30c3\u30af\u3068\u8ffd\u52a0\u306e\u30ec\u30b8\u30b9\u30c8\u30ea\u30ed\u30c3\u30af\u306f\u3001\u500b\u5225\u306e\u78ba\u8a8d\u306a\u3057\u306b\u8ee2\u9001\u3084\u91cd\u8981\u306a\u5909\u66f4\u3092\u9632\u6b62\u3057\u307e\u3059\u3002\u30a2\u30e9\u30fc\u30e0\u30c1\u30e3\u30f3\u30cd\u30eb\u306f\u3001\u9023\u7d61\u5148\u3001\u30cd\u30fc\u30e0\u30b5\u30fc\u30d0\u30fc\u3001\u30be\u30fc\u30f3\u306e\u5909\u66f4\u3092\u5373\u5ea7\u306b\u79c1\u306b\u901a\u77e5\u3057\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u72af\u4eba\u304c\u4f55\u304b\u3092\u30c6\u30b9\u30c8\u3057\u305f\u308a\u6e96\u5099\u3057\u305f\u308a\u3057\u3066\u3044\u308b\u5834\u5408\u3001\u79c1\u306f\u3059\u3050\u306b\u5bfe\u5fdc\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u3053\u306e\u5f37\u529b\u306a\u30a2\u30af\u30bb\u30b9\u306e\u7d44\u307f\u5408\u308f\u305b\u306b\u3088\u308a\u3001\u79c1\u306f\u3001\u3053\u306e\u3088\u3046\u306a\u4e8b\u614b\u3092\u56de\u907f\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3001, <strong>\u30ed\u30c3\u30af\u6a5f\u69cb<\/strong> \u305d\u3057\u3066\u3001\u8fc5\u901f\u306a\u901a\u77e5\u306b\u3088\u308a\u3001\u30d2\u30c3\u30c8\u30a8\u30ea\u30a2\u306f\u5927\u5e45\u306b\u7e2e\u5c0f\u3055\u308c\u308b\u3002.<\/p>\n\n<table>\n  <thead>\n    <tr>\n      <th>\u6e2c\u5b9a<\/th>\n      <th>\u59a8\u3052\u308b<\/th>\n      <th>\u512a\u5148\u9806\u4f4d<\/th>\n      <th>\u30d2\u30f3\u30c8<\/th>\n    <\/tr>\n  <\/thead>\n  <tbody>\n    <tr>\n      <td>\u56fa\u6709\u30d1\u30b9\u30ef\u30fc\u30c9\uff0bMFA<\/td>\n      <td>\u30a2\u30ab\u30a6\u30f3\u30c8\u8cb7\u53ce<\/td>\n      <td>\u9ad8\u3044<\/td>\n      <td>\u30cf\u30fc\u30c9\u30a6\u30a7\u30a2\u30c8\u30fc\u30af\u30f3\u304c\u30d5\u30a3\u30c3\u30b7\u30f3\u30b0\u306e\u6210\u529f\u3092\u6e1b\u3089\u3059<\/td>\n    <\/tr>\n    <tr>\n      <td>\u30ec\u30b8\u30b9\u30c8\u30e9\u30fb\u30ed\u30c3\u30af<\/td>\n      <td>\u9ad8\u901f\u8ee2\u9001<\/td>\n      <td>\u9ad8\u3044<\/td>\n      <td>clientTransferProhibited\u306e\u8a2d\u5b9a\u3068\u30c1\u30a7\u30c3\u30af<\/td>\n    <\/tr>\n    <tr>\n      <td>\u30ec\u30b8\u30b9\u30c8\u30ea\u30fb\u30ed\u30c3\u30af<\/td>\n      <td>\u6f0f\u6d29\u3057\u305f\u30a2\u30ab\u30a6\u30f3\u30c8\u306b\u3082\u304b\u304b\u308f\u3089\u305a\u5909\u66f4<\/td>\n      <td>\u975e\u5e38\u306b\u9ad8\u3044<\/td>\n      <td>\u30ec\u30b8\u30b9\u30c8\u30ea\u30fb\u30ec\u30d9\u30eb\u3067\u306e\u624b\u52d5\u691c\u8a3c<\/td>\n    <\/tr>\n    <tr>\n      <td>\u30a2\u30e9\u30fc\u30e0\u306e\u5909\u66f4<\/td>\n      <td>\u6c17\u3065\u304b\u308c\u306a\u3044\u64cd\u4f5c<\/td>\n      <td>\u30df\u30c7\u30a3\u30a2\u30e0<\/td>\n      <td>\u5373\u5ea7\u306b\u53cd\u5fdc\u3057\u3001\u30ed\u30c3\u30af\u3092\u691c\u8a3c\u3059\u308b<\/td>\n    <\/tr>\n    <tr>\n      <td>\u5f79\u5272\u5206\u62c5<\/td>\n      <td>\u8a2d\u5b9a\u30df\u30b9<\/td>\n      <td>\u30df\u30c7\u30a3\u30a2\u30e0<\/td>\n      <td>\u4e8c\u91cd\u5236\u5fa1\u539f\u5247\u306e\u78ba\u7acb<\/td>\n    <\/tr>\n  <\/tbody>\n<\/table>\n\n<p>\u3053\u306e\u8868\u306f\u3001\u8fc5\u901f\u306a\u52dd\u5229\u306e\u9078\u629e\u3068\u9577\u671f\u7684\u306a\u69cb\u9020\u5316\u306e\u4f5c\u6210\u306b\u5f79\u7acb\u3063\u3066\u3044\u308b\u3002 <strong>\u30b3\u30f3\u30c8\u30ed\u30fc\u30eb<\/strong> \u3092\u5c0e\u5165\u3057\u305f\u3002\u79c1\u306f\u5b9a\u671f\u7684\u306b\u30d5\u30e9\u30b0\u3092\u30c1\u30a7\u30c3\u30af\u3057\u3001\u30e1\u30c3\u30bb\u30fc\u30b8\u304c\u5b9f\u969b\u306b\u53d7\u4fe1\u3055\u308c\u3066\u3044\u308b\u3053\u3068\u3092\u78ba\u8a8d\u3059\u308b\u305f\u3081\u306b\u30c6\u30b9\u30c8\u30b3\u30fc\u30eb\u3092\u5b9f\u884c\u3059\u308b\u3002\u307e\u305f\u3001\u3044\u3056\u3068\u3044\u3046\u3068\u304d\u306e\u305f\u3081\u306b\u3001\u3059\u3079\u3066\u306e\u4ecb\u5165\u3092\u6587\u66f8\u5316\u3057\u3001\u8a3c\u62e0\u3092\u624b\u5143\u306b\u6b8b\u3057\u3066\u3044\u307e\u3059\u3002\u3053\u3046\u3057\u3066\u3001\u5fcd\u3073\u5bc4\u308b\u5909\u66f4\u3092\u9632\u304e\u3001\u7e70\u308a\u8fd4\u3057\u8d77\u3053\u308b\u30d1\u30bf\u30fc\u30f3\u3092\u8a8d\u8b58\u3059\u308b\u3002\u305d\u306e\u52b9\u679c\u306f\u3001\u5c65\u6b74\u304c\u304d\u308c\u3044\u306b\u306a\u308a\u3001\u8cac\u4efb\u304c\u660e\u78ba\u306b\u306a\u308a\u3001\u6b21\u306e\u3088\u3046\u306a\u3053\u3068\u304c\u76ee\u306b\u898b\u3048\u3066\u5c11\u306a\u304f\u306a\u3063\u3066\u3044\u308b\u3002 <strong>\u4e8b\u4ef6<\/strong>.<\/p>\n\n<h2>DNSSEC\u3068\u30e2\u30cb\u30bf\u30ea\u30f3\u30b0\u306b\u3088\u308bDNS\u306e\u5805\u7262\u5316<\/h2>\n\n<p>DNSSEC\u306f\u30ec\u30b9\u30dd\u30f3\u30b9\u306b\u6697\u53f7\u7684\u306b\u7f72\u540d\u3057\u3001\u653b\u6483\u8005\u304c\u6c17\u3065\u304b\u306a\u3044\u3046\u3061\u306b\u507d\u9020\u3055\u308c\u305f\u30ec\u30b9\u30dd\u30f3\u30b9\u3092\u9001\u4fe1\u3059\u308b\u3053\u3068\u3092\u9632\u304e\u307e\u3059\u3002 <strong>DNS<\/strong>-\u30c7\u30fc\u30bf\u3002\u30ec\u30b8\u30b9\u30c8\u30ea\u3067DNSSEC\u3092\u6709\u52b9\u5316\u3057\u3001DS\u30a8\u30f3\u30c8\u30ea\u3092\u30c1\u30a7\u30c3\u30af\u3057\u3001\u30ad\u30fc\u306e\u6709\u52b9\u671f\u9650\u3092\u76e3\u8996\u3057\u3066\u3044\u307e\u3059\u3002\u307e\u305f\u3001NS\u59d4\u4efb\u3001\u30be\u30fc\u30f3\u306e\u4e00\u8cab\u6027\u3001TTL\u3092\u5b9a\u671f\u7684\u306b\u30c1\u30a7\u30c3\u30af\u3057\u3001\u300c\u30ab\u30e2\u300d\u3092\u9632\u3044\u3067\u3044\u307e\u3059\u3002\u7a81\u7136\u306eNS\u3084MX\u306e\u5909\u66f4\u3092\u76e3\u8996\u3059\u308b\u3053\u3068\u3067\u3001\u4e57\u3063\u53d6\u308a\u3092\u65e9\u671f\u306b\u8b66\u544a\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u5b9f\u8df5\u7684\u306a\u30cf\u30a6\u30c4\u30fc\u3092\u304a\u63a2\u3057\u306e\u65b9\u306f\u3001\u3053\u3061\u3089\u3092\u3054\u89a7\u304f\u3060\u3055\u3044\uff1a <a href=\"https:\/\/webhosting.de\/ja\/dnssec%e3%81%ae%e6%9c%89%e5%8a%b9%e5%8c%96-%e3%83%89%e3%83%a1%e3%82%a4%e3%83%b3%e4%bf%9d%e8%ad%b7%e3%82%ac%e3%82%a4%e3%83%89-%e4%bf%a1%e9%a0%bc\/\">DNSSEC\u3092\u6709\u52b9\u306b\u3059\u308b<\/a> - \u3078\u306e\u8fd1\u9053 <strong>\u8aa0\u5b9f\u3055<\/strong>.<\/p>\n\n\n<figure class=\"wp-block-image size-full is-resized\">\n  <img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/webhosting.de\/wp-content\/uploads\/2026\/02\/domainhijacking_nachtarbeit_9273.png\" alt=\"\" width=\"1536\" height=\"1024\"\/>\n<\/figure>\n\n\n<h2>\u96fb\u5b50\u30e1\u30fc\u30eb\u8a8d\u8a3c\u3068\u30c8\u30e9\u30f3\u30b9\u30dd\u30fc\u30c8\u30fb\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3<\/h2>\n\n<p>SPF\u3001DKIM\u3001DMARC\u306f\u3001\u30d5\u30a3\u30c3\u30b7\u30f3\u30b0\u3084CEO\u8a50\u6b3a\u3078\u306e\u30c9\u30e1\u30a4\u30f3\u306e\u60aa\u7528\u3092\u6e1b\u3089\u3057\u307e\u3059\u3002\u79c1\u306f\u3001\u30af\u30ea\u30fc\u30f3\u306a\u30a2\u30e9\u30a4\u30e1\u30f3\u30c8\u30eb\u30fc\u30eb\uff08\u53ef\u80fd\u3067\u3042\u308c\u3070\u53b3\u683c\u306a\u30eb\u30fc\u30eb\uff09\u3092\u78ba\u4fdd\u3057\u3001\u300c\u9694\u96e2\u300d\u307e\u305f\u306f\u300c\u62d2\u5426\u300d\u3092\u4f7f\u7528\u3057\u3001\u5b9a\u671f\u7684\u306bDMARC\u30ec\u30dd\u30fc\u30c8\u3092\u5206\u6790\u3057\u3066\u3001\u8aa4\u3063\u305f\u8a2d\u5b9a\u3084\u306a\u308a\u3059\u307e\u3057\u3092\u65e9\u3044\u6bb5\u968e\u3067\u7279\u5b9a\u3057\u307e\u3059\u3002MTA-STS\u306fSMTP\u306e\u30c8\u30e9\u30f3\u30b9\u30dd\u30fc\u30c8\u6697\u53f7\u5316\u3092\u5f37\u5236\u3057\u3001TLS-RPT\u306f\u914d\u4fe1\u306e\u554f\u984c\u306b\u95a2\u3059\u308b\u30d5\u30a3\u30fc\u30c9\u30d0\u30c3\u30af\u3092\u63d0\u4f9b\u3057\u3066\u304f\u308c\u308b\u3002\u3059\u3067\u306bDNSSEC\u3092\u4f7f\u7528\u3057\u3066\u3044\u308b\u4eba\u306f\u3001\u8a3c\u660e\u66f8\u3078\u306e\u30d0\u30a4\u30f3\u30c9\u3092\u6697\u53f7\u7684\u306b\u5f37\u5316\u3059\u308b\u305f\u3081\u3001SMTP\u306eDANE\u3092\u691c\u8a0e\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u3002\u3053\u308c\u3089\u306e\u5bfe\u7b56\u306f\u3001\u30ec\u30b8\u30b9\u30c8\u30ea\u30a2\u30ab\u30a6\u30f3\u30c8\u306e\u4e57\u3063\u53d6\u308a\u3092\u9632\u3050\u3082\u306e\u3067\u306f\u306a\u3044\u304c\u3001\u653b\u6483\u8005\u304c\u96fb\u5b50\u30e1\u30fc\u30eb\u8a50\u6b3a\u306e\u4fe1\u7528\u3092\u5f97\u308b\u3053\u3068\u304c\u5c11\u306a\u304f\u306a\u308b\u305f\u3081\u3001\u88ab\u5bb3\u3092\u5927\u5e45\u306b\u6e1b\u3089\u3059\u3053\u3068\u304c\u3067\u304d\u308b\u3002.<\/p>\n\n<h2>EPP\u30b9\u30c6\u30fc\u30bf\u30b9\u3001\u8ffd\u52a0\u30ed\u30c3\u30af\u3001\u30ea\u30ab\u30d0\u30ea\u30fc\u30a6\u30a3\u30f3\u30c9\u30a6<\/h2>\n\n<p>\u79fb\u7c4d\u30d6\u30ed\u30c3\u30af\u3060\u3051\u3067\u306a\u304f\u3001\u4ed6\u306eEPP\u30b9\u30c6\u30fc\u30bf\u30b9\u3082\u8ce2\u304f\u4f7f\u3046\uff1a <strong>\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u66f4\u65b0\u7981\u6b62<\/strong> \u306f\u3001\u9023\u7d61\u5148\u3084\u30cd\u30fc\u30e0\u30b5\u30fc\u30d0\u30fc\u306e\u5909\u66f4\u3092\u30d6\u30ed\u30c3\u30af\u3059\u308b\u3001, <strong>\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u524a\u9664\u7981\u6b62<\/strong> \u306f\u30c9\u30e1\u30a4\u30f3\u304c\u524a\u9664\u3055\u308c\u308b\u306e\u3092\u9632\u3050\u3002\u30ec\u30b8\u30b9\u30c8\u30ea\u5074\u3067\u306f\u3001\u5bfe\u5fdc\u3059\u308b \u201eserver*\u201c\u30d5\u30e9\u30b0\u304c\u3042\u308a\u3001\u7279\u306b\u5f37\u3044\u5f71\u97ff\u3092\u4e0e\u3048\u308b\u3002\u79c1\u306f\u3001\u3053\u308c\u3089\u306e\u30d5\u30e9\u30b0\u3092\u8a2d\u5b9a\u3057\u305f\u308a\u524a\u9664\u3057\u305f\u308a\u3059\u308b\u6a29\u9650\u306e\u3042\u308b\u4eba\u3092\u8a18\u9332\u3057\u3001\u305d\u306e\u30d7\u30ed\u30bb\u30b9\u3092\u6587\u66f8\u5316\u3057\u3066\u3044\u307e\u3059\u3002\u6700\u60aa\u306e\u5834\u5408\u3001\u5b9a\u7fa9\u3055\u308c\u305f\u5fa9\u65e7\u7d4c\u8def\u304c\u79c1\u3092\u52a9\u3051\u3066\u304f\u308c\u307e\u3059\uff1aTLD\u306b\u3088\u3063\u3066\u306f\u3001\u4e0d\u6b63\u306a\u79fb\u7ba1\u3092\u53d6\u308a\u6d88\u3059\u3053\u3068\u304c\u3067\u304d\u308b\u306e\u308c\u3093\u671f\u9593\u3084\u7336\u4e88\u671f\u9593\u304c\u3042\u308a\u307e\u3059\u3002\u30ec\u30b8\u30b9\u30c8\u30ea\u304c\u8fc5\u901f\u306b\u5bfe\u5fdc\u3067\u304d\u3001\u30ea\u30b3\u30f3\u30b5\u30a4\u30eb\u306e\u30eb\u30fc\u30d7\u306b\u6642\u9593\u3092\u53d6\u3089\u308c\u306a\u3044\u3088\u3046\u3001\u5fc5\u8981\u306a\u8a3c\u62e0\uff08ID\u3001\u53e4\u3044\u30be\u30fc\u30f3\u30c7\u30fc\u30bf\u3001\u30ed\u30b0\u62bd\u51fa\uff09\u3092\u6e96\u5099\u3057\u307e\u3059\u3002.<\/p>\n\n<h2>\u30c9\u30e1\u30a4\u30f3\u306e\u30e9\u30a4\u30d5\u30b5\u30a4\u30af\u30eb\u3068\u66f4\u65b0\u898f\u5f8b<\/h2>\n\n<p>\u591a\u304f\u306e\u8cb7\u53ce\u306f\u3001\u30c9\u30e1\u30a4\u30f3\u306e\u671f\u9650\u5207\u308c\u3001\u81ea\u52d5\u66f4\u65b0\u306e\u505c\u6b62\u3001\u53e4\u3044\u8acb\u6c42\u66f8\u30c7\u30fc\u30bf\u3068\u3044\u3063\u305f\u5358\u7d14\u306a\u904e\u5931\u304b\u3089\u59cb\u307e\u308a\u307e\u3059\u3002\u305d\u306e\u305f\u3081\u3001\u79c1\u306f\u671f\u65e5\u3092\u4e00\u5143\u7ba1\u7406\u3057\u3001\u81ea\u52d5\u66f4\u65b0\u3092\u6709\u52b9\u306b\u3057\u3001\u30ea\u30de\u30a4\u30f3\u30c0\u30fc\u30e1\u30fc\u30eb\u3092\u30c6\u30b9\u30c8\u3057\u3001\u7dca\u6025\u9023\u7d61\u5148\u3092\u5b9a\u7fa9\u3057\u3066\u3044\u307e\u3059\u3002\u8acb\u6c42\u5148\u4f4f\u6240\u3068\u30af\u30ec\u30b8\u30c3\u30c8\u30ab\u30fc\u30c9\u3092\u5468\u671f\u7684\u306b\u30c1\u30a7\u30c3\u30af\u3057\u3001\u652f\u6255\u3044\u30a8\u30e9\u30fc\u306b\u3088\u308b\u5931\u52b9\u304c\u8d77\u3053\u3089\u306a\u3044\u3088\u3046\u306b\u3057\u3066\u3044\u307e\u3059\u3002\u591a\u304f\u306e\u30c9\u30e1\u30a4\u30f3\u304c\u3042\u308b\u30dd\u30fc\u30c8\u30d5\u30a9\u30ea\u30aa\u306e\u5834\u5408\u3001\u9069\u5207\u306a\u5834\u5408\u306b\u306f\u4fe1\u983c\u3067\u304d\u308b\u30ec\u30b8\u30b9\u30c8\u30e9\u3092\u6570\u793e\u306b\u7d71\u5408\u3057\u3001\u6280\u8853\u9023\u7d61\u5148\u3068\u7ba1\u7406\u9023\u7d61\u5148\u3092\u5206\u3051\u3066\u304a\u304f\u304c\u3001\u30a2\u30af\u30bb\u30b9\u306f\u53ef\u80fd\u306b\u3057\u3066\u304a\u304f\uff08\u500b\u4eba\u306e\u30e1\u30fc\u30eb\u30dc\u30c3\u30af\u30b9\u306f\u4f7f\u308f\u305a\u3001\u30c1\u30fc\u30e0\u306e\u30e1\u30fc\u30ea\u30f3\u30b0\u30ea\u30b9\u30c8\u3092\u4f7f\u3046\uff09\u3002\u3053\u3046\u3059\u308b\u3053\u3068\u3067\u3001\u91cd\u8981\u306a\u60c5\u5831\u304c\u30b9\u30d1\u30e0\u306b\u7d1b\u308c\u8fbc\u3093\u3060\u308a\u3001\u62c5\u5f53\u8005\u306e\u5909\u66f4\u306b\u3088\u3063\u3066\u30ae\u30e3\u30c3\u30d7\u304c\u751f\u3058\u305f\u308a\u3059\u308b\u306e\u3092\u9632\u3044\u3067\u3044\u307e\u3059\u3002.<\/p>\n\n<h2>\u30ec\u30b8\u30b9\u30c8\u30e9\u304a\u3088\u3073DNS\u30d7\u30ed\u30d0\u30a4\u30c0\u30fc\u306e\u9078\u629e\u57fa\u6e96<\/h2>\n\n<p>\u79c1\u306f\u4fa1\u683c\u3060\u3051\u3067\u306a\u304f\u3001\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u6a5f\u80fd\u306b\u57fa\u3065\u3044\u3066\u30d1\u30fc\u30c8\u30ca\u30fc\u3092\u9078\u3093\u3067\u3044\u308b\uff1a<\/p>\n<ul>\n  <li>\u8a73\u7d30\u306a\u76e3\u67fb\u30ed\u30b0\uff08\u3044\u3064\u3001\u8ab0\u304c\u3001\u4f55\u3092\u5909\u66f4\u3057\u305f\u304b\uff09\u3068\u5341\u5206\u306a\u4fdd\u5b58\u671f\u9593<\/li>\n  <li>\u6700\u5c0f\u9650\u306e\u6a29\u9650\u3067\u304d\u3081\u7d30\u304b\u3044\u30ed\u30fc\u30eb\u3068API\u30c8\u30fc\u30af\u30f3\u3001\u7406\u60f3\u7684\u306b\u306fIP\u8a31\u53ef\u30ea\u30b9\u30c8\u3068SSO\/SAML<\/li>\n  <li>\u30ec\u30b8\u30b9\u30c8\u30ea\u30fb\u30ed\u30c3\u30af\u3068\u500b\u5225\u306e\u30ea\u30ea\u30fc\u30b9\u30fb\u30d1\u30b9\u306e\u30b5\u30dd\u30fc\u30c8\uff08\u96fb\u8a71\u6697\u8a3c\u756a\u53f7\u3001\u30bb\u30ad\u30e5\u30a2\u30fb\u30c1\u30b1\u30c3\u30c8\uff09<\/li>\n  <li>\u660e\u78ba\u306a\u30a8\u30b9\u30ab\u30ec\u30fc\u30b7\u30e7\u30f3\u30fb\u30d1\u30b9\u3068\u5951\u7d04\u4e0a\u5b9a\u7fa9\u3055\u308c\u305f\u5fdc\u7b54\u6642\u9593\u306b\u3088\u308b24\u6642\u9593365\u65e5\u306e\u30b5\u30dd\u30fc\u30c8<\/li>\n  <li>DNS\u30d7\u30ed\u30d0\u30a4\u30c0\u30fc\uff1a\u30a8\u30cb\u30fc\u30ad\u30e3\u30b9\u30c8\u30fb\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3001\u81ea\u52d5\u9375\u30ed\u30fc\u30eb\u30aa\u30fc\u30d0\u30fc\u6a5f\u80fd\u4ed8\u304dDNSSEC\u3001\u30bb\u30ab\u30f3\u30c0\u30eaDNS\u30aa\u30d7\u30b7\u30e7\u30f3\u3001TSIG\u30bb\u30ad\u30e5\u30a2\u8ee2\u9001<\/li>\n<\/ul>\n<p>\u30d7\u30ed\u30bb\u30b9\u3092\u691c\u8a3c\u3057\u3001\u30ea\u30b9\u30af\u3092\u4f34\u308f\u305a\u306b\u840c\u82bd\u7684\u306a\u554f\u984c\u3092\u6392\u9664\u3059\u308b\u305f\u3081\u306b\u3001\u79c1\u306f\u30af\u30ea\u30c6\u30a3\u30ab\u30eb\u3067\u306a\u3044\u30c9\u30e1\u30a4\u30f3\u3067\u79fb\u884c\u524d\u306b\u3053\u308c\u3089\u306e\u70b9\u3092\u30c6\u30b9\u30c8\u3059\u308b\u3002.<\/p>\n\n<h2>\u81ea\u52d5\u5316\u3068\u5909\u66f4\u7ba1\u7406<\/h2>\n\n<p>\u79c1\u306f\u3001DNS\u306e\u5909\u66f4\u3092\u30b3\u30fc\u30c9\u3068\u3057\u3066\u7ba1\u7406\u3059\u308b\u3053\u3068\u3067\u3001\u518d\u73fe\u6027\u3092\u4fdd\u3063\u3066\u3044\u308b\u3002\u30d7\u30eb\u30ea\u30af\u30a8\u30b9\u30c8\u3001\u30ec\u30d3\u30e5\u30fc\u3001\u81ea\u52d5\u30c1\u30a7\u30c3\u30af\uff08\u30be\u30fc\u30f3\u30b7\u30f3\u30bf\u30c3\u30af\u30b9\u3001\u30c7\u30ea\u30b2\u30fc\u30b7\u30e7\u30f3\u306e\u4e00\u8cab\u6027\u3001TTL\u6226\u7565\uff09\u306b\u3088\u308a\u3001\u4e0d\u6ce8\u610f\u306b\u3088\u308b\u30df\u30b9\u3092\u9632\u3044\u3067\u3044\u308b\u3002\u5927\u304d\u306a\u5909\u66f4\u306e\u524d\u306b\u306f\u3001\u307e\u305aTTL\u3092\u4e0b\u3052\u3001\u6b21\u306b\u5909\u66f4\u3057\u3001\u307e\u305f\u4e0a\u3052\u308b\u3068\u3044\u3046\u3088\u3046\u306b\u3001TTL\u3092\u305a\u3089\u3057\u3066\u4f5c\u696d\u3059\u308b\u3002\u91cd\u8981\u306a\u30d3\u30b8\u30cd\u30b9\u30d5\u30a7\u30fc\u30ba\u3067\u306f\u300c\u5909\u66f4\u51cd\u7d50\u300d\u3092\u884c\u3044\u3001\u671b\u307e\u3057\u304f\u306a\u3044\u526f\u4f5c\u7528\u304b\u3089\u5b88\u308b\u3002\u30ea\u30b9\u30af\u306e\u3042\u308b\u5909\u66f4\u306b\u3064\u3044\u3066\u306f\u3001\u30c6\u30b9\u30c8\u30be\u30fc\u30f3\u3084\u30b5\u30d6\u30c9\u30e1\u30a4\u30f3\u3092\u300c\u30ab\u30ca\u30ea\u30a2\u300d\u3068\u3057\u3066\u4f7f\u7528\u3057\u3001\u751f\u7523\u7684\u306a\u30be\u30fc\u30f3\u306b\u89e6\u308c\u308b\u524d\u306b\u3001\u9045\u5ef6\u3001\u30a8\u30e9\u30fc\u7387\u3001\u30ea\u30be\u30eb\u30d0\u30ad\u30e3\u30c3\u30b7\u30e5\u306e\u6319\u52d5\u3092\u89b3\u5bdf\u3059\u308b\u3002.<\/p>\n\n<h2>\u8a3c\u660e\u66f8\u306e\u767a\u884c\u3068CAA\u306e\u8a18\u9332<\/h2>\n\n<p>\u4e57\u3063\u53d6\u308a\u5f8c\u3001\u72af\u4eba\u306f\u3057\u3070\u3057\u3070\u65b0\u3057\u3044TLS\u8a3c\u660e\u66f8\u3092\u767a\u884c\u3057\u3001\u507d\u306e\u30b5\u30fc\u30d3\u30b9\u3092\u4fe1\u7528\u3067\u304d\u308b\u3088\u3046\u306b\u898b\u305b\u304b\u3051\u308b\u3002\u305d\u3053\u3067\u79c1\u306f <strong>CAA\u30ec\u30b3\u30fc\u30c9<\/strong>, 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<strong>\u30de\u30cb\u30d4\u30e5\u30ec\u30fc\u30b7\u30e7\u30f3<\/strong> 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<strong>\u30d7\u30ed\u30bb\u30b9<\/strong>.<\/p>\n\n<h2>\u8cb7\u53ce\u306b\u95a2\u3059\u308b\u5f53\u9762\u306e\u63aa\u7f6e<\/h2>\n\n<p>\u8cb7\u53ce\u3092\u767a\u898b\u3057\u305f\u5834\u5408\u3001\u79c1\u306f\u305f\u3060\u3061\u306b\u767b\u9332\u6a5f\u95a2\u306b\u5831\u544a\u3057\u3001\u72b6\u6cc1\u3092\u660e\u78ba\u306b\u8aac\u660e\u3057\u3001\u3044\u304b\u306a\u308b\u76ee\u7acb\u3064\u60c5\u5831\u3082\u53c2\u7167\u3059\u308b\u3002 <strong>\u5909\u66f4\u70b9<\/strong>. .\u540c\u6642\u306b\u3001\u5225\u306e\u30af\u30ea\u30fc\u30f3\u306a\u30c7\u30d0\u30a4\u30b9\u304b\u3089\u65b0\u3057\u3044\u30d1\u30b9\u30ef\u30fc\u30c9\u3092\u8a2d\u5b9a\u3057\u3001\u7591\u308f\u3057\u3044\u30ea\u30ab\u30d0\u30ea\u30d1\u30b9\u3092\u89e3\u9664\u3059\u308b\u3002\u969c\u5bb3\u306e\u3042\u308b\u30cd\u30fc\u30e0\u30b5\u30fc\u30d0\u30fc\u306e\u30ea\u30bb\u30c3\u30c8\u3092\u8981\u6c42\u3057\u3001\u53ef\u80fd\u3067\u3042\u308c\u3070\u30ec\u30b8\u30b9\u30c8\u30ea\u30ec\u30d9\u30eb\u3067\u306e\u4e00\u6642\u7684\u306a\u30d6\u30ed\u30c3\u30af\u3092\u8981\u6c42\u3059\u308b\u3002\u305d\u306e\u5f8c\u3001\u96fb\u5b50\u30e1\u30fc\u30eb\u306e\u6d41\u308c\u3092\u30c1\u30a7\u30c3\u30af\u3057\u3001\u30ed\u30b0\u306a\u3069\u306e\u8a3c\u62e0\u3092\u78ba\u4fdd\u3057\u3001\u5b9f\u969b\u306b\u8d77\u3053\u3063\u305f\u3053\u3068\u3092\u9867\u5ba2\u306b\u4f1d\u3048\u307e\u3059\u3002\u3053\u308c\u3089\u306e\u30b9\u30c6\u30c3\u30d7\u3092\u3088\u308a\u4f53\u7cfb\u7684\u306b\u6587\u66f8\u5316\u3059\u308c\u3070\u3059\u308b\u307b\u3069\u3001\u79c1\u306f\u3088\u308a\u65e9\u304f\u3001\u3088\u308a\u6b63\u78ba\u306a\u60c5\u5831\u3092\u5f97\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u3002 <strong>\u30b3\u30f3\u30c8\u30ed\u30fc\u30eb<\/strong> \u5f8c\u308d\u306e\u65b9\u3002<\/p>\n\n\n<figure class=\"wp-block-image size-full is-resized\">\n  <img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/webhosting.de\/wp-content\/uploads\/2026\/02\/Schreibtischszene_Entwickler_9183.png\" alt=\"\" width=\"1536\" height=\"1024\"\/>\n<\/figure>\n\n\n<h2>\u79d1\u5b66\u635c\u67fb\u3068\u6cd5\u7684\u624b\u6bb5<\/h2>\n\n<p>\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8\u3001RDAP\/WHOIS\u30b9\u30ca\u30c3\u30d7\u30b7\u30e7\u30c3\u30c8\u3001\u30e1\u30fc\u30eb\u30d8\u30c3\u30c0\u30fc\u3001\u30b5\u30fc\u30d0\u30fc\u3068\u30ec\u30b8\u30b9\u30c8\u30e9\u306e\u30ed\u30b0\u306a\u3069\u3067\u3059\u3002\u30bf\u30a4\u30e0\u30b9\u30bf\u30f3\u30d7\u3068\u4fdd\u7ba1\u306e\u660e\u78ba\u306a\u30c1\u30a7\u30fc\u30f3\u306f\u3001\u5f8c\u3067\u30af\u30ec\u30fc\u30e0\u3092\u4e3b\u5f35\u3059\u308b\u5834\u5408\u306b\u91cd\u8981\u3067\u3059\u3002\u540c\u6642\u306b\u3001\u79c1\u306f\u6b63\u5f0f\u306a\u30c1\u30e3\u30f3\u30cd\u30eb\u3092\u30a2\u30af\u30c6\u30a3\u30d6\u306b\u3057\u307e\u3059\u3002\u30ec\u30b8\u30b9\u30c8\u30e9\u306b\u306f\u30a8\u30b9\u30ab\u30ec\u30fc\u30b7\u30e7\u30f3\u3068\u7dca\u6025\u9023\u7d61\u5148\u304c\u3042\u308a\u3001\u30ec\u30b8\u30b9\u30c8\u30ea\u306b\u3082\u3042\u308b\u3053\u3068\u304c\u3088\u304f\u3042\u308a\u307e\u3059\u3002TLD\u3068\u5951\u7d04\u72b6\u6cc1\u306b\u3088\u3063\u3066\u306f\u3001\u672a\u627f\u8a8d\u306e\u79fb\u8ee2\u306b\u5bfe\u3059\u308b\u8fc5\u901f\u306a\u660e\u78ba\u5316\u624b\u7d9a\u304d\u304c\u3042\u308a\u307e\u3059\u3002\u5546\u6a19\u306b\u95a2\u9023\u3059\u308b\u30b1\u30fc\u30b9\u3067\u306f\u3001\u7d1b\u4e89\u89e3\u6c7a\u306e\u8fc5\u901f\u5316\u3082\u691c\u8a0e\u3059\u308b\u3002\u305d\u306e\u305f\u3081\u3001ID\u3001\u5546\u696d\u767b\u8a18\u7c3f\u6284\u672c\u3001\u904e\u53bb\u306e\u8acb\u6c42\u66f8\u306a\u3069\u3092\u624b\u5143\u306b\u4fdd\u7ba1\u3057\u3066\u3044\u307e\u3059\u3002.<\/p>\n\n<h2>\u30b3\u30df\u30e5\u30cb\u30b1\u30fc\u30b7\u30e7\u30f3\u3068\u30a8\u30af\u30b5\u30b5\u30a4\u30ba<\/h2>\n\n<p>\u79c1\u306f\u3001\u30a6\u30a7\u30d6\u30b5\u30a4\u30c8\u3001\u30b5\u30dd\u30fc\u30c8\u3001\u30bd\u30fc\u30b7\u30e3\u30eb\u30e1\u30c7\u30a3\u30a2\u7528\u306e\u77ed\u3044\u30b9\u30c6\u30fc\u30bf\u30b9\u30e1\u30c3\u30bb\u30fc\u30b8\u3001\u9867\u5ba2\u5411\u3051\u306eFAQ\u3001\u793e\u5185\u30c1\u30fc\u30e0\u5411\u3051\u306e\u6307\u793a\u306a\u3069\u3001\u3059\u3050\u306b\u4f7f\u3048\u308b\u30b3\u30df\u30e5\u30cb\u30b1\u30fc\u30b7\u30e7\u30f3\u30e2\u30b8\u30e5\u30fc\u30eb\u3092\u63d0\u4f9b\u3059\u308b\u3002\u30aa\u30da\u30ec\u30fc\u30b7\u30e7\u30f3\u306e\u8a73\u7d30\u3092\u660e\u3089\u304b\u306b\u3059\u308b\u3053\u3068\u306a\u304f\u3001\u900f\u660e\u6027\u3092\u78ba\u4fdd\u3059\u308b\u3053\u3068\u304c\u4fe1\u983c\u306b\u3064\u306a\u304c\u308a\u307e\u3059\u3002\u30a4\u30f3\u30b7\u30c7\u30f3\u30c8\u767a\u751f\u5f8c\u3001\u79c1\u306f\u6559\u8a13\u3092\u307e\u3068\u3081\u3001\u30e9\u30f3\u30d6\u30c3\u30af\u3092\u9069\u5fdc\u3055\u305b\u3001\u77ed\u3044\u300c\u5353\u4e0a\u300d\u6f14\u7fd2\u3067\u30d7\u30ed\u30bb\u30b9\u3092\u8a13\u7df4\u3059\u308b\u3002\u5e73\u5747\u691c\u77e5\u6642\u9593\uff08MTTD\uff09\u3084\u5e73\u5747\u5fa9\u65e7\u6642\u9593\uff08MTTR\uff09\u3068\u3044\u3063\u305f\u6307\u6a19\u306f\u3001\u79c1\u306e\u30d7\u30ed\u30b0\u30e9\u30e0\u304c\u672c\u5f53\u306b\u6539\u5584\u3055\u308c\u3066\u3044\u308b\u304b\u3092\u6e2c\u5b9a\u3059\u308b\u306e\u306b\u5f79\u7acb\u3064\u3002.<\/p>\n\n<h2>\u30ac\u30d0\u30ca\u30f3\u30b9\u3001\u5f79\u5272\u3001\u30d7\u30ed\u30bb\u30b9<\/h2>\n\n<p>\u30ec\u30b8\u30b9\u30c8\u30e9\u3001\u30be\u30fc\u30f3\u3001\u30cd\u30fc\u30e0\u30b5\u30fc\u30d0\u30fc\u306e\u660e\u78ba\u306a\u6240\u6709\u6a29\u3092\u5b9a\u7fa9\u3059\u308b\u3053\u3068\u3067\u3001\u610f\u601d\u6c7a\u5b9a\u304c\u7406\u89e3\u3067\u304d <strong>\u8cac\u4efb\u3042\u308b<\/strong> \u79cb\u7570\u52d5\u3084NS\u306e\u5909\u66f4\u306a\u3069\u306e\u91cd\u8981\u306a\u30a2\u30af\u30b7\u30e7\u30f3\u306f\u3001\u4e8c\u91cd\u7ba1\u7406\u306e\u539f\u5247\u306b\u5f93\u3046\u3002\u79c1\u306f\u8ffd\u52a0\u3092\u6700\u5c0f\u9650\u306b\u3068\u3069\u3081\u3001\u4e00\u5143\u7684\u306b\u6587\u66f8\u5316\u3057\u3001\u30b9\u30bf\u30c3\u30d5\u306e\u5909\u66f4\u304c\u3042\u3063\u305f\u5834\u5408\u306f\u5373\u5ea7\u306b\u66f4\u65b0\u3057\u3066\u3044\u308b\u3002\u6bb5\u968e\u7684\u306a\u6307\u793a\u306e\u3042\u308b\u30e9\u30f3\u30d6\u30c3\u30af\u306f\u3001\u7279\u306b\u30b9\u30c8\u30ec\u30b9\u306e\u591a\u3044\u72b6\u6cc1\u3067\u306e\u53cd\u5fdc\u6642\u9593\u3092\u5927\u5e45\u306b\u77ed\u7e2e\u3059\u308b\u3002\u6280\u8853\u7684\u306a\u9762\u3092\u6df1\u304f\u6398\u308a\u4e0b\u3052\u305f\u3044\u4eba\u306f\u3001\u660e\u78ba\u306b\u8a2d\u5b9a\u3055\u308c\u305fNS\u69cb\u9020\u304c\u6709\u76ca\u3067\u3042\u308b\u3002 <a href=\"https:\/\/webhosting.de\/ja\/%e8%87%aa%e5%88%86%e3%81%ae%e3%83%8d%e3%83%bc%e3%83%a0%e3%82%b5%e3%83%bc%e3%83%90%e3%83%bc%e3%82%92%e8%a8%ad%e5%ae%9a%e3%81%99%e3%82%8b-dns%e3%82%be%e3%83%bc%e3%83%b3-%e3%83%89%e3%83%a1%e3%82%a4\/\">\u30cd\u30fc\u30e0\u30b5\u30fc\u30d0\u30fc<\/a>, \u3069\u306e\u3088\u3046\u306a\u8cac\u4efb\u3068 <strong>\u900f\u660e\u6027<\/strong> \u3092\u5f37\u5316\u3059\u308b\u3002<\/p>\n\n<h2>\u7d4c\u6e08\u52b9\u7387\uff1a\u30b3\u30b9\u30c8\u3068\u4fbf\u76ca<\/h2>\n\n<p>\u79c1\u306f\u3001\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u4e88\u7b97\u3092\u7684\u3092\u7d5e\u3063\u305f\u5f62\u3067\u914d\u5099\u3057\u3066\u3044\u308b\u3002\u3072\u3068\u3064\u306e\u30a4\u30f3\u30b7\u30c7\u30f3\u30c8\u304c\u767a\u751f\u3059\u308c\u3070\u3001\u306f\u308b\u304b\u306b\u9ad8\u3044\u30b3\u30b9\u30c8\u304c\u304b\u304b\u308b\u304b\u3089\u3060\u3002 <strong>\u30c0\u30e1\u30fc\u30b8<\/strong> \u5e74\u9593\u4fdd\u8b77\u30b3\u30b9\u30c8\u3088\u308aTLD\u306b\u3082\u3088\u308b\u304c\u3001\u30ec\u30b8\u30b9\u30c8\u30ea\u30fb\u30ed\u30c3\u30af\u306b\u306f\u5e74\u4f1a\u8cbb\u304c\u304b\u304b\u308b\u304c\u3001\u30c0\u30a6\u30f3\u30bf\u30a4\u30e0\u3084\u8a55\u5224\u306e\u5931\u589c\u306b\u6bd4\u3079\u308c\u3070\u4f4e\u3044\u3068\u601d\u308f\u308c\u308b\u3002\u30cf\u30fc\u30c9\u30a6\u30a7\u30a2\u30fb\u30ad\u30fc\u306f\u901a\u5e38\u30011\u30e6\u30fc\u30b6\u30fc\u3042\u305f\u308a50\u30e6\u30fc\u30ed\u304b\u308970\u30e6\u30fc\u30ed\u304b\u304b\u308b\u304c\u3001\u9577\u671f\u7684\u306b\u306f\u30ed\u30b0\u30a4\u30f3\u30fb\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u304c\u683c\u6bb5\u306b\u5411\u4e0a\u3059\u308b\u3002\u5b9a\u671f\u7684\u306a\u30c8\u30ec\u30fc\u30cb\u30f3\u30b0\u3084\u77ed\u3044\u30c1\u30e5\u30fc\u30c8\u30ea\u30a2\u30eb\u304c\u5fc5\u8981\u3060\u304c\u3001\u53cd\u5fdc\u304c\u65e9\u304f\u306a\u308a\u3001\u8a2d\u5b9a\u30df\u30b9\u3082\u6e1b\u308b\u3002\u3053\u308c\u3089\u306e\u5bfe\u7b56\u306f\u3001\u305f\u3068\u3048\u653b\u6483\u30921\u56de\u3057\u304b\u9632\u3052\u306a\u304b\u3063\u305f\u308a\u3001\u518d\u8d77\u52d5\u306e\u901f\u5ea6\u304c\u8457\u3057\u304f\u9045\u304f\u306a\u3063\u305f\u308a\u3057\u3066\u3082\u3001\u5831\u308f\u308c\u308b\u3002 <strong>\u7d04\u3059\u308b<\/strong>.<\/p>\n\n\n<figure class=\"wp-block-image size-full is-resized\">\n  <img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/webhosting.de\/wp-content\/uploads\/2026\/02\/domain-hijacking-office-5932.png\" alt=\"\" width=\"1536\" height=\"1024\"\/>\n<\/figure>\n\n\n<h2>\u3088\u304f\u3042\u308b\u904e\u3061\u3068\u305d\u306e\u5bfe\u51e6\u6cd5<\/h2>\n\n<ul>\n  <li>\u201eDNSSEC\u306f\u3059\u3079\u3066\u3092\u89e3\u6c7a\u3059\u308b\u201c- DNSSEC\u306f\u5fdc\u7b54\u306e\u5b8c\u5168\u6027\u3092\u4fdd\u8b77\u3057\u307e\u3059\u304c\u3001\u30ec\u30b8\u30b9\u30c8\u30e9\u3078\u306e\u30a2\u30af\u30bb\u30b9\u306f\u4fdd\u8b77\u3057\u307e\u305b\u3093\u3002\u79c1\u306fDNSSEC\u3068\u30a2\u30ab\u30a6\u30f3\u30c8\u306e\u5f37\u529b\u306a\u30b3\u30f3\u30c8\u30ed\u30fc\u30eb\u3092\u7d44\u307f\u5408\u308f\u305b\u3066\u3044\u307e\u3059\u3002.<\/li>\n  <li>\u201e\u30ed\u30c3\u30af\u306e\u305b\u3044\u3067\u696d\u52d9\u304c\u6ede\u308b\u201c- 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