{"id":8101,"date":"2026-08-07T11:22:41","date_gmt":"2026-08-07T02:22:41","guid":{"rendered":"https:\/\/jfs.or.jp\/jfs-cs\/?p=8101"},"modified":"2026-08-07T11:22:53","modified_gmt":"2026-08-07T02:22:53","slug":"ms-teams-syber-security-01","status":"publish","type":"post","link":"https:\/\/jfs.or.jp\/jfs-cs\/ms-teams-syber-security-01\/","title":{"rendered":"MS Teams\u306e\u5f37\u529b\u6a5f\u80fd\u306b\u3088\u308b\u30b5\u30a4\u30d0\u30fc\u653b\u6483\u306e\u8105\u5a01\u3068\u5bfe\u7b56"},"content":{"rendered":"

Microsoft Teams \u3082 Google \u30b9\u30d7\u30ec\u30c3\u30c9\u30b7\u30fc\u30c8\u3068\u540c\u69d8\u306b\u3001\u300c\u65e5\u5e38\u7684\u306b\u696d\u52d9\u3067\u4f7f\u308f\u308c\u308b\u4fe1\u983c\u3055\u308c\u305f\u30d7\u30e9\u30c3\u30c8\u30d5\u30a9\u30fc\u30e0\u3067\u3042\u308b\u3053\u3068\uff08LOLBins: Living Off the Land Binaries\/Services\uff09\u300d\u3092\u5229\u7528\u3057\u305f\u30b5\u30a4\u30d0\u30fc\u653b\u6483\u306e\u6a19\u7684\u306b\u306a\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n

Teams \u306e\u6a5f\u80fd\uff08\u30c1\u30e3\u30c3\u30c8\u3001\u30d5\u30a1\u30a4\u30eb\u5171\u6709\u3001\u30a2\u30d7\u30ea\u9023\u643a\u3001Power Automate \u7b49\uff09\u3092\u60aa\u7528\u3057\u305f\u653b\u6483\u3092\u9632\u3050\u306b\u306f\u3001Microsoft 365\uff08M365\uff09\u7ba1\u7406\u30bb\u30f3\u30bf\u30fc\uff0fTeams \u7ba1\u7406\u30bb\u30f3\u30bf\u30fc\u3067\u306e\u7d71\u5236<\/b>\u3068\u30e6\u30fc\u30b6\u30fc\u5074\u306e\u5bfe\u7b56<\/b>\u304c\u91cd\u8981\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n

\u4e3b\u306b\u5bfe\u8c61\u3068\u306a\u308b\u653b\u6483\u624b\u6cd5\u3068\u3001\u305d\u306e\u9632\u5fa1\u7b56\u3092\u307e\u3068\u3081\u307e\u3057\u305f\u3002<\/p>\n

1. \u5916\u90e8\u30e6\u30fc\u30b6\u30fc\u304b\u3089\u306e\u30d5\u30a3\u30c3\u30b7\u30f3\u30b0\u30fb\u30de\u30eb\u30a6\u30a7\u30a2\u9001\u4fe1\uff08External Access \u306e\u60aa\u7528\uff09<\/h2>\n

\u653b\u6483\u8005\u304c\u5916\u90e8\u306e Microsoft \u30a2\u30ab\u30a6\u30f3\u30c8\u3092\u4f5c\u6210\u3057\u3001\u793e\u5185\u30e6\u30fc\u30b6\u30fc\u3078\u76f4\u63a5 Teams \u30c1\u30e3\u30c3\u30c8\u3092\u9001\u308a\u3064\u3051\u3066\u30d5\u30a3\u30c3\u30b7\u30f3\u30b0\u30ea\u30f3\u30af\u3092\u8e0f\u307e\u305b\u305f\u308a\u3001\u60aa\u8cea\u306a\u30d5\u30a1\u30a4\u30eb\uff08zip\u3001exe\u3001\u30de\u30af\u30ed\u4ed8\u304dOffice\u30d5\u30a1\u30a4\u30eb\u306a\u3069\uff09\u3092\u9001\u4fe1\u3057\u305f\u308a\u3059\u308b\u624b\u53e3\u3067\u3059\u3002<\/p>\n

    \n
  • \u5916\u90e8\u30a2\u30af\u30bb\u30b9\uff08External Access\uff09\u306e\u5236\u9650<\/b>\n
      \n
    • Teams \u7ba1\u7406\u30bb\u30f3\u30bf\u30fc\u3067\u3001\u5916\u90e8\u30c9\u30e1\u30a4\u30f3\u3068\u306e\u30c1\u30e3\u30c3\u30c8\u30fb\u901a\u8a71\u3092\u300c\u4e0d\u8a31\u53ef\uff08\u5b8c\u5168\u306b\u7981\u6b62\uff09\u300d\u306b\u3059\u308b\u304b\u3001\u300c\u7279\u5b9a\u306e\u4fe1\u983c\u3067\u304d\u308b\u30c9\u30e1\u30a4\u30f3\uff08\u30db\u30ef\u30a4\u30c8\u30ea\u30b9\u30c8\uff09\u306e\u307f\u8a31\u53ef\u300d\u306b\u8a2d\u5b9a\u3057\u307e\u3059\u3002<\/li>\n<\/ul>\n<\/li>\n
    • \u30b2\u30b9\u30c8\u30a2\u30af\u30bb\u30b9\u306e\u5236\u5fa1<\/b>\n
        \n
      • \u30c1\u30fc\u30e0\u3078\u306e\u30b2\u30b9\u30c8\u8ffd\u52a0\u6a29\u9650\u3092\u7ba1\u7406\u8005\u306e\u307f\u306b\u7d5e\u308a\u8fbc\u307f\u3001\u4e00\u822c\u30e6\u30fc\u30b6\u30fc\u304c\u81ea\u7531\u306b\u5916\u90e8\u30a2\u30ab\u30a6\u30f3\u30c8\u3092\u7d44\u7e54\u5185\u306b\u62db\u304d\u5165\u308c\u306a\u3044\u3088\u3046\u306b\u3057\u307e\u3059\u3002<\/li>\n<\/ul>\n<\/li>\n
      • Microsoft Defender for Office 365\uff08Safe Links \/ Safe Attachments\uff09\u306e\u6709\u52b9\u5316<\/b>\n
          \n
        • Teams \u30c1\u30e3\u30c3\u30c8\u5185\u306e\u30ea\u30f3\u30af\u3092\u30af\u30ea\u30c3\u30af\u6642\u306b\u30ea\u30a2\u30eb\u30bf\u30a4\u30e0\u3067\u5b89\u5168\u6027\u3092\u30b9\u30ad\u30e3\u30f3\uff08Safe Links\uff09\u3057\u3001\u6dfb\u4ed8\u30d5\u30a1\u30a4\u30eb\u3092\u30b5\u30f3\u30c9\u30dc\u30c3\u30af\u30b9\u3067\u4e8b\u524d\u691c\u8a3c\uff08Safe Attachments\uff09\u3059\u308b\u3088\u3046\u306b\u8a2d\u5b9a\u3057\u307e\u3059\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n

          2. Teams \u9023\u643a\u30a2\u30d7\u30ea\u30fb\u30dc\u30c3\u30c8\uff08Apps \/ Bots\uff09\u306e\u60aa\u7528\u5bfe\u7b56<\/h2>\n

          \u4e0d\u6b63\u306a\u30b5\u30fc\u30c9\u30d1\u30fc\u30c6\u30a3\u88fd\u30a2\u30d7\u30ea\u3084\u3001\u653b\u6483\u8005\u304c\u4f5c\u6210\u3057\u305f\u30ab\u30b9\u30bf\u30e0\u30dc\u30c3\u30c8\u3092 Teams \u5185\u306b\u5c0e\u5165\u3055\u305b\u3001\u30e6\u30fc\u30b6\u30fc\u306e\u8a8d\u8a3c\u60c5\u5831\uff08\u30c8\u30fc\u30af\u30f3\uff09\u3084\u7d44\u7e54\u5185\u30c7\u30fc\u30bf\u3092\u7a83\u53d6\u3059\u308b\u653b\u6483\u3067\u3059\u3002<\/p>\n

            \n
          • \u30b5\u30fc\u30c9\u30d1\u30fc\u30c6\u30a3\u30a2\u30d7\u30ea\u306e\u8ffd\u52a0\u5236\u9650<\/b>\n
              \n
            • Teams \u7ba1\u7406\u30bb\u30f3\u30bf\u30fc\u306e\u300c\u30a2\u30d7\u30ea\u306e\u6a29\u9650\u7ba1\u7406\u30dd\u30ea\u30b7\u30fc\uff08App permission policies\uff09\u300d\u3067\u3001\u672a\u627f\u8a8d\u306e\u30b5\u30fc\u30c9\u30d1\u30fc\u30c6\u30a3\u30a2\u30d7\u30ea\u3084\u30ab\u30b9\u30bf\u30e0\u30a2\u30d7\u30ea\u306e\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3092\u539f\u5247\u7981\u6b62<\/b>\u306b\u3057\u307e\u3059\u3002<\/li>\n<\/ul>\n<\/li>\n
            • \u627f\u8a8d\u6e08\u307f\u30a2\u30d7\u30ea\u306e\u307f\u914d\u4fe1\uff08App Store \u306e\u30db\u30ef\u30a4\u30c8\u30ea\u30b9\u30c8\u5316\uff09<\/b>\n
                \n
              • \u7d44\u7e54\u3067\u5b89\u5168\u3092\u78ba\u8a8d\u30fb\u627f\u8a8d\u3057\u305f\u30a2\u30d7\u30ea\u306e\u307f\u3092\u30e6\u30fc\u30b6\u30fc\u304c\u8ffd\u52a0\u30fb\u5229\u7528\u3067\u304d\u308b\u3088\u3046\u306b\u5236\u5fa1\u3057\u307e\u3059\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n

                3. Power Automate \/ Webhook \u3092\u5229\u7528\u3057\u305f\u30c7\u30fc\u30bf\u6301\u3061\u51fa\u3057\u30fbC2\u901a\u4fe1\u5bfe\u7b56<\/h2>\n

                Teams \u306b\u306f Webhook \u3084 Power Automate\uff08\u65e7 Flow\uff09\u306a\u3069\u306e\u81ea\u52d5\u5316\u30c4\u30fc\u30eb\u304c\u7d44\u307f\u8fbc\u307e\u308c\u3066\u3044\u307e\u3059\u3002\u653b\u6483\u8005\u304c\u4fb5\u5165\u5f8c\u3001Incoming\/Outgoing Webhook \u3092\u8a2d\u5b9a\u3057\u3066\u30c1\u30e3\u30c3\u30c8\u30ed\u30b0\u3084\u30d5\u30a1\u30a4\u30eb\u3092\u5916\u90e8\u30b5\u30fc\u30d0\u30fc\u3078\u81ea\u52d5\u8ee2\u9001\u3057\u305f\u308a\u3001C2\uff08\u9060\u9694\u64cd\u4f5c\uff09\u30b3\u30de\u30f3\u30c9\u306e\u53d7\u3051\u6e21\u3057\u306b\u5229\u7528\u3057\u305f\u308a\u3059\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n

                  \n
                • Webhook \u30b3\u30cd\u30af\u30bf\u306e\u5229\u7528\u5236\u9650<\/b>\n
                    \n
                  • \u4e0d\u8981\u306a\u30c1\u30fc\u30e0\u3084\u30c1\u30e3\u30cd\u30eb\u3067\u306e\u300cIncoming Webhook\u300d\u300cOutgoing Webhook\u300d\u306e\u8ffd\u52a0\u6a29\u9650\u3092\u30d6\u30ed\u30c3\u30af\u3057\u307e\u3059\u3002<\/li>\n<\/ul>\n<\/li>\n
                  • Power Automate \u306e DLP\uff08\u30c7\u30fc\u30bf\u640d\u5931\u9632\u6b62\uff09\u30dd\u30ea\u30b7\u30fc\u8a2d\u5b9a<\/b>\n
                      \n
                    • Power Platform \u7ba1\u7406\u30bb\u30f3\u30bf\u30fc\u306b\u3066\u3001\u300cTeams \u30b3\u30cd\u30af\u30bf\u300d\u3068\u300c\u5916\u90e8\u306e\u975e\u4fe1\u983c\u30b3\u30cd\u30af\u30bf\uff08Web\u30ea\u30af\u30a8\u30b9\u30c8\u3001FTP\u3001\u5916\u90e8\u30af\u30e9\u30a6\u30c9\u30b9\u30c8\u30ec\u30fc\u30b8\u306a\u3069\uff09\u300d\u3092\u540c\u4e00\u30dd\u30ea\u30b7\u30fc\u5185\u3067\u7d44\u307f\u5408\u308f\u305b\u3089\u308c\u306a\u3044\u3088\u3046\u5236\u9650<\/b>\u3057\u307e\u3059\uff08\u3053\u308c\u306b\u3088\u308a\u3001Teams\u5185\u306e\u30c7\u30fc\u30bf\u3092\u81ea\u52d5\u3067\u5916\u90e8\u3078\u9001\u4fe1\u3059\u308b\u30d5\u30ed\u30fc\u306e\u69cb\u7bc9\u3092\u963b\u6b62\u3067\u304d\u307e\u3059\uff09\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n

                      4. \u30bb\u30c3\u30b7\u30e7\u30f3\u30cf\u30a4\u30b8\u30e3\u30c3\u30af\uff08OAuth \u30c8\u30fc\u30af\u30f3\u7a83\u53d6\uff09\u3068\u4e0d\u6b63\u30ed\u30b0\u30a4\u30f3<\/h2>\n

                      Teams \u30a2\u30ab\u30a6\u30f3\u30c8\u306e\u30a2\u30af\u30bb\u30b9 consolidated \u30c8\u30fc\u30af\u30f3\u304c\u7a83\u53d6\u3055\u308c\u308b\u3068\u3001MFA\uff08\u591a\u8981\u7d20\u8a8d\u8a3c\uff09\u3092\u7a81\u7834\u3057\u3066 Teams \u5185\u306e\u904e\u53bb\u306e\u4f1a\u8a71\u30ed\u30b0\u3001\u30d5\u30a1\u30a4\u30eb\u3001\u500b\u4eba\u60c5\u5831\u304c\u3059\u3079\u3066\u95b2\u89a7\u30fb\u596a\u53d6\u3055\u308c\u308b\u30ea\u30b9\u30af\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n

                        \n
                      • Conditional Access\uff08\u6761\u4ef6\u4ed8\u304d\u30a2\u30af\u30bb\u30b9\uff09\u306e\u5c0e\u5165<\/b>\n
                          \n
                        • Microsoft Entra ID\uff08\u65e7 Azure AD\uff09\u306b\u3066\u3001\u300cMFA\u306e\u5f37\u5236\u300d\u306b\u52a0\u3048\u3066<\/b>\u300c\u4f1a\u793e\u6307\u5b9a\u306e\u7aef\u672b\uff08Compliance Device\uff09\u304b\u3089\u306e\u30a2\u30af\u30bb\u30b9\u306e\u307f\u8a31\u53ef\u300d\u3084<\/b>\u300c\u7279\u5b9aIP\u30a2\u30c9\u30ec\u30b9\u304b\u3089\u306e\u30a2\u30af\u30bb\u30b9\u306e\u307f\u8a31\u53ef\u300d\u3068\u3044\u3063\u305f\u5236\u9650\u3092\u8a2d\u3051\u307e\u3059\u3002<\/li>\n<\/ul>\n<\/li>\n
                        • \u30bb\u30c3\u30b7\u30e7\u30f3\u6709\u52b9\u671f\u9650\u306e\u77ed\u7e2e\u3068\u30ea\u30b9\u30af\u30d9\u30fc\u30b9\u8a8d\u8a3c<\/b>\n
                            \n
                          • Identity Protection \u3092\u6d3b\u7528\u3057\u3001\u666e\u6bb5\u3068\u7570\u306a\u308b\u5834\u6240\u304b\u3089\u306e\u30ed\u30b0\u30a4\u30f3\u3084\u4e0d\u5be9\u306a\u30b5\u30a4\u30f3\u30a4\u30f3\u6319\u52d5\u3092\u691c\u77e5\u3057\u305f\u969b\u306b\u3001\u81ea\u52d5\u3067\u30bb\u30c3\u30b7\u30e7\u30f3\u3092\u5931\u52b9\u3055\u305b\u308b\u4ed5\u7d44\u307f\u3092\u69cb\u7bc9\u3057\u307e\u3059\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n

                            \u5bfe\u7b56\u30c1\u30a7\u30c3\u30af\u30ea\u30b9\u30c8\uff08\u512a\u5148\u9806\u4f4d\u5225\uff09<\/h2>\n\n\n\n\n\n\n\n\n\n
                            \u533a\u5206<\/strong><\/td>\n\u5b9f\u65bd\u5bfe\u7b56<\/strong><\/td>\n\u76ee\u7684<\/strong><\/td>\n<\/tr>\n<\/thead>\n
                            M365 \u7ba1\u7406\u8005<\/b><\/td>\n\u5916\u90e8\u30a2\u30af\u30bb\u30b9\uff08External Access\uff09\u306e\u30c9\u30e1\u30a4\u30f3\u9650\u5b9a<\/b><\/td>\n\u7d44\u7e54\u5916\u306e\u60aa\u610f\u3042\u308b\u30a2\u30ab\u30a6\u30f3\u30c8\u304b\u3089\u306e\u30c0\u30a4\u30ec\u30af\u30c8\u30e1\u30c3\u30bb\u30fc\u30b8\u906e\u65ad<\/td>\n<\/tr>\n
                            M365 \u7ba1\u7406\u8005<\/b><\/td>\nTeams\u30a2\u30d7\u30ea\u30fb\u30ab\u30b9\u30bf\u30e0\u30a2\u30d7\u30ea\u306e\u5c0e\u5165\u5236\u9650<\/b><\/td>\n\u60aa\u8cea\u30dc\u30c3\u30c8\u3084\u672a\u627f\u8a8d\u30a2\u30d7\u30ea\u306b\u3088\u308b\u8a8d\u8a3c\u60c5\u5831\u30fb\u30c7\u30fc\u30bf\u7a83\u53d6\u9632\u6b62<\/td>\n<\/tr>\n
                            M365 \u7ba1\u7406\u8005<\/b><\/td>\nPower Platform \u306e DLP \u30dd\u30ea\u30b7\u30fc\u8a2d\u5b9a<\/b><\/td>\nWebhook \u3084 Power Automate \u3092\u4f7f\u3063\u305f\u5916\u90e8\u3078\u306e\u81ea\u52d5\u30c7\u30fc\u30bf\u6301\u3061\u51fa\u3057\u9632\u6b62<\/td>\n<\/tr>\n
                            \u30bb\u30ad\u30e5\u30ea\u30c6\u30a3<\/b><\/td>\nSafe Links \/ Safe Attachments for Teams \u306e\u6709\u52b9\u5316<\/b><\/td>\n\u30c1\u30e3\u30c3\u30c8\u5185\u306e\u60aa\u8ceaURL\u30fb\u6dfb\u4ed8\u30d5\u30a1\u30a4\u30eb\u306e\u30ea\u30a2\u30eb\u30bf\u30a4\u30e0\u691c\u77e5\u30fb\u30d6\u30ed\u30c3\u30af<\/td>\n<\/tr>\n
                            ID \u7ba1\u7406<\/b><\/td>\n\u6761\u4ef6\u4ed8\u304d\u30a2\u30af\u30bb\u30b9\uff08MFA \uff0b \u7aef\u672b\u5236\u9650\uff09<\/b><\/td>\n\u30a2\u30ab\u30a6\u30f3\u30c8\u4e57\u3063\u53d6\u308a\u3084\u30c8\u30fc\u30af\u30f3\u76d7\u7528\u306b\u3088\u308b\u4e0d\u6cd5\u4fb5\u5165\u9632\u6b62<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

                             <\/p>\n

                             <\/p>\n","protected":false},"excerpt":{"rendered":"Microsoft Teams \u3082 Google \u30b9\u30d7\u30ec\u30c3\u30c9\u30b7\u30fc\u30c8\u3068\u540c\u69d8\u306b\u3001\u300c\u65e5\u5e38\u7684\u306b\u696d\u52d9\u3067\u4f7f\u308f\u308c\u308b\u4fe1\u983c\u3055\u308c\u305f\u30d7\u30e9\u30c3\u30c8\u30d5\u30a9\u30fc\u30e0\u3067\u3042\u308b\u3053\u3068\uff08LOLBins: Living Off the Land Binaries\/Ser …","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","vk-ltc-link":"","vk-ltc-target":"0"},"categories":[24],"tags":[],"class_list":["post-8101","post","type-post","status-publish","format-standard","hentry","category-iot-it"],"_links":{"self":[{"href":"https:\/\/jfs.or.jp\/jfs-cs\/wp-json\/wp\/v2\/posts\/8101","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/jfs.or.jp\/jfs-cs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/jfs.or.jp\/jfs-cs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/jfs.or.jp\/jfs-cs\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/jfs.or.jp\/jfs-cs\/wp-json\/wp\/v2\/comments?post=8101"}],"version-history":[{"count":1,"href":"https:\/\/jfs.or.jp\/jfs-cs\/wp-json\/wp\/v2\/posts\/8101\/revisions"}],"predecessor-version":[{"id":8102,"href":"https:\/\/jfs.or.jp\/jfs-cs\/wp-json\/wp\/v2\/posts\/8101\/revisions\/8102"}],"wp:attachment":[{"href":"https:\/\/jfs.or.jp\/jfs-cs\/wp-json\/wp\/v2\/media?parent=8101"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/jfs.or.jp\/jfs-cs\/wp-json\/wp\/v2\/categories?post=8101"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/jfs.or.jp\/jfs-cs\/wp-json\/wp\/v2\/tags?post=8101"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}