{"id":477072,"date":"2023-08-09T09:06:59","date_gmt":"2023-08-09T09:06:59","guid":{"rendered":""},"modified":"2023-09-05T11:13:57","modified_gmt":"2023-09-05T11:13:57","slug":"email-spoofing","status":"publish","type":"wiki","link":"https:\/\/oneproxy.pro\/jp\/wiki\/email-spoofing\/","title":{"rendered":"\u30e1\u30fc\u30eb\u306e\u306a\u308a\u3059\u307e\u3057"},"content":{"rendered":"

\u96fb\u5b50\u30e1\u30fc\u30eb\u306e\u306a\u308a\u3059\u307e\u3057\u306f\u3001\u96fb\u5b50\u30e1\u30fc\u30eb\u306e\u30d8\u30c3\u30c0\u30fc\u60c5\u5831\u3092\u64cd\u4f5c\u3057\u3066\u5225\u306e\u500b\u4eba\u307e\u305f\u306f\u56e3\u4f53\u306b\u306a\u308a\u3059\u307e\u3059\u8a50\u6b3a\u884c\u70ba\u3067\u3059\u3002\u3053\u306e\u624b\u6cd5\u306f\u3001\u53d7\u4fe1\u8005\u3092\u6b3a\u3044\u3066\u672c\u6765\u306f\u884c\u308f\u306a\u3044\u3088\u3046\u306a\u884c\u52d5\u3092\u53d6\u3089\u305b\u308b\u76ee\u7684\u3067\u3001\u30d5\u30a3\u30c3\u30b7\u30f3\u30b0\u653b\u6483\u3084\u30b9\u30d1\u30e0 \u30ad\u30e3\u30f3\u30da\u30fc\u30f3\u3067\u3088\u304f\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002<\/p>\n

\u96fb\u5b50\u30e1\u30fc\u30eb\u306a\u308a\u3059\u307e\u3057\u306e\u51fa\u73fe\u3068\u9032\u5316<\/h2>\n

\u96fb\u5b50\u30e1\u30fc\u30eb\u306e\u306a\u308a\u3059\u307e\u3057\u306f\u96fb\u5b50\u30e1\u30fc\u30eb\u81ea\u4f53\u3068\u540c\u3058\u304f\u3089\u3044\u53e4\u304f\u304b\u3089\u5b58\u5728\u3057\u3066\u304a\u308a\u3001\u6700\u521d\u306e\u9855\u8457\u306a\u4e8b\u4f8b\u306f 1970 \u5e74\u4ee3\u521d\u671f\u306b\u767a\u751f\u3057\u307e\u3057\u305f\u3002\u96fb\u5b50\u30e1\u30fc\u30eb\u306e\u9001\u4fe1\u306b\u4f7f\u7528\u3055\u308c\u308b\u4e3b\u8981\u306a\u901a\u4fe1\u30d7\u30ed\u30c8\u30b3\u30eb\u3067\u3042\u308b Simple Mail Transfer Protocol (SMTP) \u306f 1982 \u5e74\u306b\u958b\u767a\u3055\u308c\u307e\u3057\u305f\u3002\u305d\u306e\u521d\u671f\u306e\u8a2d\u8a08\u306b\u306f\u8a8d\u8a3c\u30e1\u30ab\u30cb\u30ba\u30e0\u304c\u307e\u3063\u305f\u304f\u542b\u307e\u308c\u3066\u3044\u306a\u304b\u3063\u305f\u305f\u3081\u3001\u8ab0\u3067\u3082\u7c21\u5358\u306b\u4ed6\u4eba\u306b\u306a\u308a\u3059\u307e\u3057\u3066\u96fb\u5b50\u30e1\u30fc\u30eb\u3092\u9001\u4fe1\u3067\u304d\u307e\u3057\u305f\u3002<\/p>\n

\u300c\u30b9\u30d7\u30fc\u30d5\u30a3\u30f3\u30b0\u300d\u3068\u3044\u3046\u7528\u8a9e\u306f\u3001\u6709\u540d\u4eba\u306e\u4f3c\u9854\u7d75\u4eba\u5f62\u3092\u7279\u96c6\u3057\u305f 1980 \u5e74\u4ee3\u306e\u30a4\u30ae\u30ea\u30b9\u306e\u30b3\u30e1\u30c7\u30a3\u756a\u7d44\u300cSpitting Image\u300d\u306b\u7531\u6765\u3059\u308b\u3068\u8003\u3048\u3089\u308c\u3066\u3044\u307e\u3059\u3002\u300c\u30b9\u30d7\u30fc\u30d5\u30a3\u30f3\u30b0\u300d\u3068\u3044\u3046\u8a00\u8449\u306f\u3001\u3053\u3046\u3057\u305f\u30e6\u30fc\u30e2\u30e9\u30b9\u306a\u6a21\u5023\u3092\u8868\u73fe\u3059\u308b\u305f\u3081\u306b\u4f7f\u7528\u3055\u308c\u3001\u5f8c\u306b\u30c6\u30af\u30ce\u30ed\u30b8\u30fc\u306e\u5206\u91ce\u3067\u3001\u4ed6\u4eba\u306e\u3075\u308a\u3092\u3059\u308b\u884c\u70ba\u3092\u6307\u3059\u3088\u3046\u306b\u306a\u308a\u307e\u3057\u305f\u3002<\/p>\n

\u30e1\u30fc\u30eb\u306e\u306a\u308a\u3059\u307e\u3057\u3092\u8a73\u3057\u304f\u7406\u89e3\u3059\u308b<\/h2>\n

\u96fb\u5b50\u30e1\u30fc\u30eb\u306e\u306a\u308a\u3059\u307e\u3057\u306f\u3001\u901a\u5e38\u3001\u96fb\u5b50\u30e1\u30fc\u30eb\u306e\u30d8\u30c3\u30c0\u30fc\u3092\u5909\u66f4\u3057\u3066\u3001\u30e1\u30c3\u30bb\u30fc\u30b8\u304c\u5225\u306e\u9001\u4fe1\u5143\u304b\u3089\u9001\u4fe1\u3055\u308c\u305f\u3088\u3046\u306b\u898b\u305b\u308b\u3053\u3068\u3067\u884c\u308f\u308c\u307e\u3059\u3002\u3053\u308c\u306b\u306f\u3001\u591a\u304f\u306e\u5834\u5408\u3001\u300c\u9001\u4fe1\u5143\u300d\u3001\u300c\u8fd4\u4fe1\u5148\u300d\u3001\u300cReturn-Path\u300d\u30d5\u30a3\u30fc\u30eb\u30c9\u3092\u5909\u66f4\u3057\u3066\u3001\u4fe1\u983c\u3067\u304d\u308b\u9001\u4fe1\u8005\u306e\u96fb\u5b50\u30e1\u30fc\u30eb \u30a2\u30c9\u30ec\u30b9\u3092\u53cd\u6620\u3055\u305b\u307e\u3059\u3002\u305d\u306e\u76ee\u7684\u306f\u3001\u53d7\u4fe1\u8005\u3092\u8aa4\u89e3\u3055\u305b\u3066\u96fb\u5b50\u30e1\u30fc\u30eb\u304c\u6b63\u5f53\u306a\u3082\u306e\u3067\u3042\u308b\u3068\u601d\u308f\u305b\u3001\u30b3\u30f3\u30c6\u30f3\u30c4\u306b\u95a2\u4e0e\u3059\u308b\u3088\u3046\u306b\u4ed5\u5411\u3051\u308b\u3053\u3068\u3067\u3059\u3002<\/p>\n

\u306a\u308a\u3059\u307e\u3057\u30e1\u30fc\u30eb\u306e\u5185\u5bb9\u306f\u3001\u653b\u6483\u8005\u306e\u52d5\u6a5f\u306b\u3088\u3063\u3066\u7570\u306a\u308b\u3053\u3068\u304c\u3088\u304f\u3042\u308a\u307e\u3059\u3002\u305f\u3068\u3048\u3070\u3001\u30d5\u30a3\u30c3\u30b7\u30f3\u30b0\u653b\u6483\u3067\u306f\u6a5f\u5bc6\u60c5\u5831\u306e\u8981\u6c42\u304c\u542b\u307e\u308c\u308b\u5834\u5408\u304c\u3042\u308a\u3001\u30b9\u30d1\u30e0\u30e1\u30fc\u30eb\u3067\u306f\u88fd\u54c1\u3084\u30b5\u30fc\u30d3\u30b9\u306e\u5ba3\u4f1d\u304c\u884c\u308f\u308c\u308b\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n

\u30e1\u30fc\u30eb\u306a\u308a\u3059\u307e\u3057\u306e\u4ed5\u7d44\u307f<\/h2>\n

\u96fb\u5b50\u30e1\u30fc\u30eb\u306e\u57fa\u672c\u69cb\u9020\u306b\u306f\u3001\u30d8\u30c3\u30c0\u30fc\u3068\u672c\u6587\u304c\u542b\u307e\u308c\u307e\u3059\u3002\u30d8\u30c3\u30c0\u30fc\u306b\u306f\u3001\u9001\u4fe1\u8005\u3001\u53d7\u4fe1\u8005\u3001\u96fb\u5b50\u30e1\u30fc\u30eb\u304c\u53d7\u4fe1\u30c8\u30ec\u30a4\u306b\u5c4a\u304f\u307e\u3067\u306e\u7d4c\u8def\u306b\u95a2\u3059\u308b\u60c5\u5831\u304c\u542b\u307e\u308c\u307e\u3059\u3002\u30b9\u30d7\u30fc\u30d5\u30a3\u30f3\u30b0\u304c\u884c\u308f\u308c\u308b\u306e\u306f\u3053\u306e\u30d8\u30c3\u30c0\u30fc\u5185\u3067\u3059\u3002<\/p>\n

\u96fb\u5b50\u30e1\u30fc\u30eb\u3092\u507d\u88c5\u3059\u308b\u306b\u306f\u3001SMTP (Simple Mail Transfer Protocol) \u30b5\u30fc\u30d0\u30fc\u306b\u30a2\u30af\u30bb\u30b9\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u30b5\u30fc\u30d0\u30fc\u306f\u30e1\u30fc\u30eb\u8ee2\u9001\u30a8\u30fc\u30b8\u30a7\u30f3\u30c8 (MTA) \u3068\u901a\u4fe1\u3057\u3001MTA \u306f\u53d7\u4fe1\u8005\u306e\u30e1\u30fc\u30eb \u30b5\u30fc\u30d0\u30fc\u306b\u96fb\u5b50\u30e1\u30fc\u30eb\u3092\u9001\u4fe1\u3057\u307e\u3059\u3002\u3053\u306e\u901a\u4fe1\u4e2d\u306b\u3001\u9001\u4fe1\u8005\u306f SMTP \u4f1a\u8a71\u306e\u300cMAIL FROM\u300d\u30b3\u30de\u30f3\u30c9\u3092\u5909\u66f4\u3057\u3066\u3001\u96fb\u5b50\u30e1\u30fc\u30eb\u306e\u9001\u4fe1\u5143\u3092\u507d\u88c5\u3067\u304d\u307e\u3059\u3002<\/p>\n

\u30e1\u30fc\u30eb\u30b9\u30d7\u30fc\u30d5\u30a3\u30f3\u30b0\u306e\u4e3b\u306a\u7279\u5fb4<\/h2>\n

\u96fb\u5b50\u30e1\u30fc\u30eb\u306e\u306a\u308a\u3059\u307e\u3057\u306b\u306f\u3001\u3044\u304f\u3064\u304b\u306e\u91cd\u8981\u306a\u7279\u5fb4\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n

    \n
  1. \n

    \u507d\u88c5\u3055\u308c\u305f\u9001\u4fe1\u8005\u30a2\u30c9\u30ec\u30b9<\/strong>: \u6700\u3082\u9855\u8457\u306a\u7279\u5fb4\u306f\u3001\u9001\u4fe1\u8005\u30a2\u30c9\u30ec\u30b9\u304c\u8aa4\u3063\u3066\u8a18\u8f09\u3055\u308c\u3066\u3044\u308b\u3053\u3068\u3067\u3059\u3002<\/p>\n<\/li>\n

  2. \n

    \u8aa4\u89e3\u3092\u62db\u304f\u30b3\u30f3\u30c6\u30f3\u30c4<\/strong>: \u306a\u308a\u3059\u307e\u3057\u30e1\u30fc\u30eb\u306b\u306f\u3001\u865a\u507d\u306e\u4e3b\u5f35\u3084\u6a5f\u5bc6\u60c5\u5831\u306e\u8981\u6c42\u306a\u3069\u3001\u53d7\u4fe1\u8005\u3092\u8aa4\u89e3\u3055\u305b\u308b\u3053\u3068\u3092\u76ee\u7684\u3068\u3057\u305f\u30b3\u30f3\u30c6\u30f3\u30c4\u304c\u542b\u307e\u308c\u3066\u3044\u308b\u3053\u3068\u304c\u3088\u304f\u3042\u308a\u307e\u3059\u3002<\/p>\n<\/li>\n

  3. \n

    \u96a0\u3055\u308c\u305f\u771f\u306e\u8d77\u6e90<\/strong>: \u30e1\u30fc\u30eb\u306e\u5b9f\u969b\u306e\u767a\u4fe1\u5143\u306f\u4e0d\u660e\u77ad\u306b\u306a\u3063\u3066\u304a\u308a\u3001\u767a\u4fe1\u5143\u3092\u9061\u3063\u3066\u8ffd\u8de1\u3059\u308b\u3053\u3068\u304c\u56f0\u96e3\u3067\u3059\u3002<\/p>\n<\/li>\n

  4. \n

    \u4fe1\u983c\u306e\u60aa\u7528<\/strong>: \u30b9\u30d7\u30fc\u30d5\u30a3\u30f3\u30b0\u306f\u3001\u591a\u304f\u306e\u5834\u5408\u3001\u53d7\u4fe1\u8005\u304c\u306a\u308a\u3059\u307e\u3057\u306e\u5bfe\u8c61\u3068\u3059\u308b\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u3092\u4fe1\u983c\u3057\u3066\u3044\u308b\u3053\u3068\u3092\u5229\u7528\u3057\u3066\u3001\u53d7\u4fe1\u8005\u304c\u7591\u3046\u3053\u3068\u306a\u304f\u884c\u52d5\u3059\u308b\u3088\u3046\u306b\u4ed5\u5411\u3051\u307e\u3059\u3002<\/p>\n<\/li>\n<\/ol>\n

    \u96fb\u5b50\u30e1\u30fc\u30eb\u306e\u306a\u308a\u3059\u307e\u3057\u306e\u7a2e\u985e<\/h2>\n

    \u96fb\u5b50\u30e1\u30fc\u30eb\u306e\u306a\u308a\u3059\u307e\u3057\u304c\u767a\u751f\u3059\u308b\u65b9\u6cd5\u306f\u3044\u304f\u3064\u304b\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n\n\n\n\n\n
    \u30bf\u30a4\u30d7<\/th>\n\u8aac\u660e<\/th>\n<\/tr>\n<\/thead>\n
    \u8868\u793a\u540d\u306e\u306a\u308a\u3059\u307e\u3057<\/td>\n\u653b\u6483\u8005\u306f\u3001\u4fe1\u983c\u3067\u304d\u308b\u30bd\u30fc\u30b9\u3068\u4e00\u81f4\u3059\u308b\u3088\u3046\u306b\u8868\u793a\u540d\u3092\u5909\u66f4\u3057\u307e\u3059\u3002<\/td>\n<\/tr>\n
    \u76f4\u63a5\u7684\u306a\u306a\u308a\u3059\u307e\u3057<\/td>\n\u653b\u6483\u8005\u306f\u6b63\u898f\u306e\u96fb\u5b50\u30e1\u30fc\u30eb \u30a2\u30c9\u30ec\u30b9\u3092\u4f7f\u7528\u3057\u3066\u3001\u306a\u308a\u3059\u307e\u3057\u306e\u96fb\u5b50\u30e1\u30fc\u30eb\u3092\u9001\u4fe1\u3057\u307e\u3059\u3002<\/td>\n<\/tr>\n
    \u985e\u4f3c\u30c9\u30e1\u30a4\u30f3\u306e\u306a\u308a\u3059\u307e\u3057<\/td>\n\u653b\u6483\u8005\u306f\u3001\u4fe1\u983c\u3067\u304d\u308b\u30c9\u30e1\u30a4\u30f3\u306b\u3088\u304f\u4f3c\u305f\u30c9\u30e1\u30a4\u30f3\u540d\u3092\u6301\u3064\u96fb\u5b50\u30e1\u30fc\u30eb \u30a2\u30c9\u30ec\u30b9\u3092\u4f7f\u7528\u3057\u307e\u3059\u3002<\/td>\n<\/tr>\n
    \u3044\u3068\u3053\u30c9\u30e1\u30a4\u30f3\u306e\u306a\u308a\u3059\u307e\u3057<\/td>\n\u653b\u6483\u8005\u306f\u3001\u4fe1\u983c\u3067\u304d\u308b\u30c9\u30e1\u30a4\u30f3\u306b\u985e\u4f3c\u3057\u305f\u5b9f\u969b\u306e\u30c9\u30e1\u30a4\u30f3\u3092\u4f7f\u7528\u3057\u307e\u3059\u3002<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

    \u30e1\u30fc\u30eb\u306e\u306a\u308a\u3059\u307e\u3057\u306e\u6d3b\u7528\uff1a\u554f\u984c\u3068\u89e3\u6c7a\u7b56<\/h2>\n

    \u96fb\u5b50\u30e1\u30fc\u30eb\u306e\u306a\u308a\u3059\u307e\u3057\u306f\u3001\u30d5\u30a3\u30c3\u30b7\u30f3\u30b0\u653b\u6483\u3084\u30b9\u30d1\u30e0\u30ad\u30e3\u30f3\u30da\u30fc\u30f3\u306a\u3069\u306e\u60aa\u610f\u306e\u3042\u308b\u76ee\u7684\u3067\u3088\u304f\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002\u306a\u308a\u3059\u307e\u3057\u306f\u3001\u500b\u4eba\u60c5\u5831\u306e\u76d7\u96e3\u3001\u91d1\u92ad\u7684\u640d\u5931\u3001\u4f01\u696d\u306e\u8a55\u5224\u306e\u5931\u589c\u306a\u3069\u306e\u554f\u984c\u306b\u3064\u306a\u304c\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n

    \u3053\u308c\u3089\u306e\u554f\u984c\u3092\u8efd\u6e1b\u3059\u308b\u305f\u3081\u306b\u3001\u3055\u307e\u3056\u307e\u306a\u89e3\u6c7a\u7b56\u304c\u63d0\u6848\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n

      \n
    1. \n

      SPF (\u9001\u4fe1\u8005\u30dd\u30ea\u30b7\u30fc \u30d5\u30ec\u30fc\u30e0\u30ef\u30fc\u30af)<\/strong>: \u9001\u4fe1\u8005\u306e IP \u30a2\u30c9\u30ec\u30b9\u3092\u627f\u8a8d\u6e08\u307f IP \u306e\u30ea\u30b9\u30c8\u3068\u7167\u5408\u3057\u307e\u3059\u3002<\/p>\n<\/li>\n

    2. \n

      DKIM (\u30c9\u30e1\u30a4\u30f3\u30ad\u30fc\u8b58\u5225\u30e1\u30fc\u30eb)<\/strong>: \u9001\u4fe1\u8005\u306e\u30c9\u30e1\u30a4\u30f3\u306b\u30ea\u30f3\u30af\u3055\u308c\u305f\u30c7\u30b8\u30bf\u30eb\u7f72\u540d\u304c\u95a2\u4fc2\u3057\u307e\u3059\u3002<\/p>\n<\/li>\n

    3. \n

      DMARC (\u30c9\u30e1\u30a4\u30f3\u30d9\u30fc\u30b9\u306e\u30e1\u30c3\u30bb\u30fc\u30b8\u8a8d\u8a3c\u30ec\u30dd\u30fc\u30c8\u3068\u9069\u5408)<\/strong>: SPF \u3068 DKIM \u3092\u4f7f\u7528\u3057\u3066\u96fb\u5b50\u30e1\u30fc\u30eb\u3092\u691c\u8a3c\u3057\u3001\u30c1\u30a7\u30c3\u30af\u306b\u5931\u6557\u3057\u305f\u96fb\u5b50\u30e1\u30fc\u30eb\u3092\u3069\u306e\u3088\u3046\u306b\u51e6\u7406\u3059\u308b\u304b\u306b\u3064\u3044\u3066\u306e\u30dd\u30ea\u30b7\u30fc\u3092\u63d0\u4f9b\u3057\u307e\u3059\u3002<\/p>\n<\/li>\n<\/ol>\n

      \u96fb\u5b50\u30e1\u30fc\u30eb\u306e\u306a\u308a\u3059\u307e\u3057\u3068\u985e\u4f3c\u306e\u6226\u8853\u306e\u6bd4\u8f03<\/h2>\n\n\n\n\n\n\n\n
      \u5b66\u671f<\/th>\n\u610f\u5473<\/th>\n\u30e1\u30fc\u30eb\u306e\u306a\u308a\u3059\u307e\u3057\u3068\u306e\u95a2\u9023\u6027<\/th>\n<\/tr>\n<\/thead>\n
      \u30d5\u30a3\u30c3\u30b7\u30f3\u30b0<\/td>\n\u6a5f\u5bc6\u30c7\u30fc\u30bf\u3092\u53d6\u5f97\u3059\u308b\u305f\u3081\u306e\u4e0d\u6b63\u306a\u8a66\u307f<\/td>\n\u30e1\u30fc\u30eb\u306e\u306a\u308a\u3059\u307e\u3057\u306f\u30d5\u30a3\u30c3\u30b7\u30f3\u30b0\u3067\u3088\u304f\u4f7f\u308f\u308c\u308b\u624b\u6cd5\u3067\u3059<\/td>\n<\/tr>\n
      \u30b9\u30d1\u30e0<\/td>\n\u5927\u91cf\u306b\u9001\u4fe1\u3055\u308c\u308b\u8ff7\u60d1\u30e1\u30c3\u30bb\u30fc\u30b8<\/td>\n\u30b9\u30d1\u30e0\u30e1\u30fc\u30eb\u306f\u3001\u958b\u5c01\u3055\u308c\u308b\u53ef\u80fd\u6027\u3092\u9ad8\u3081\u308b\u305f\u3081\u306b\u30e1\u30fc\u30eb\u306e\u306a\u308a\u3059\u307e\u3057\u3092\u4f7f\u7528\u3059\u308b\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u3002<\/td>\n<\/tr>\n
      \u30b9\u30d7\u30fc\u30d5\u30a3\u30f3\u30b0<\/td>\n\u30c7\u30d0\u30a4\u30b9\u307e\u305f\u306f\u30e6\u30fc\u30b6\u30fc\u306e\u306a\u308a\u3059\u307e\u3057<\/td>\n\u96fb\u5b50\u30e1\u30fc\u30eb\u306e\u306a\u308a\u3059\u307e\u3057\u306f\u3001\u306a\u308a\u3059\u307e\u3057\u306e\u4e00\u7a2e\u3067\u3042\u308b\u3002<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

      \u5c06\u6765\u306e\u5c55\u671b\u3068\u6280\u8853<\/h2>\n

      \u96fb\u5b50\u30e1\u30fc\u30eb\u306e\u306a\u308a\u3059\u307e\u3057\u306b\u5bfe\u6297\u3059\u308b\u305f\u3081\u306e\u5c06\u6765\u306e\u6280\u8853\u306b\u306f\u3001\u6a5f\u68b0\u5b66\u7fd2\u3068 AI \u306e\u9032\u6b69\u304c\u542b\u307e\u308c\u307e\u3059\u3002\u3053\u308c\u3089\u306e\u6280\u8853\u306f\u3001\u306a\u308a\u3059\u307e\u3057\u30e1\u30fc\u30eb\u3092\u8a8d\u8b58\u3057\u3001\u30e6\u30fc\u30b6\u30fc\u306e\u53d7\u4fe1\u30c8\u30ec\u30a4\u306b\u5c4a\u304f\u524d\u306b\u524a\u9664\u3059\u308b\u3088\u3046\u306b\u30c8\u30ec\u30fc\u30cb\u30f3\u30b0\u3067\u304d\u307e\u3059\u3002\u307e\u305f\u3001\u30d6\u30ed\u30c3\u30af\u30c1\u30a7\u30fc\u30f3\u6280\u8853\u306f\u3001\u96fb\u5b50\u30e1\u30fc\u30eb\u3092\u542b\u3080\u30c7\u30b8\u30bf\u30eb\u901a\u4fe1\u306e\u691c\u8a3c\u3068\u8a8d\u8a3c\u306b\u5f79\u5272\u3092\u679c\u305f\u3059\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n

      \u30e1\u30fc\u30eb\u306e\u306a\u308a\u3059\u307e\u3057\u306b\u304a\u3051\u308b\u30d7\u30ed\u30ad\u30b7\u30b5\u30fc\u30d0\u30fc\u306e\u5f79\u5272<\/h2>\n

      \u30d7\u30ed\u30ad\u30b7 \u30b5\u30fc\u30d0\u30fc\u306f\u96fb\u5b50\u30e1\u30fc\u30eb\u306e\u306a\u308a\u3059\u307e\u3057\u306b\u76f4\u63a5\u95a2\u4e0e\u3059\u308b\u3053\u3068\u306f\u3042\u308a\u307e\u305b\u3093\u304c\u3001\u89e3\u6c7a\u7b56\u306e\u4e00\u90e8\u3068\u306a\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002\u30d7\u30ed\u30ad\u30b7 \u30b5\u30fc\u30d0\u30fc\u306f\u3001\u30e6\u30fc\u30b6\u30fc\u306e\u5143\u306e IP \u30a2\u30c9\u30ec\u30b9\u3092\u30de\u30b9\u30af\u3059\u308b\u3053\u3068\u3067\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u3068\u533f\u540d\u6027\u3092\u3055\u3089\u306b\u9ad8\u3081\u3001\u6f5c\u5728\u7684\u306a\u306a\u308a\u3059\u307e\u3057\u653b\u6483\u306b\u5bfe\u3059\u308b\u4fdd\u8b77\u30ec\u30d9\u30eb\u3092\u63d0\u4f9b\u3057\u307e\u3059\u3002<\/p>\n

      \u95a2\u9023\u30ea\u30f3\u30af<\/h2>\n

      \u96fb\u5b50\u30e1\u30fc\u30eb\u306e\u306a\u308a\u3059\u307e\u3057\u306b\u95a2\u3059\u308b\u8a73\u7d30\u306b\u3064\u3044\u3066\u306f\u3001\u6b21\u306e\u30ea\u30bd\u30fc\u30b9\u3092\u53c2\u7167\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n

        \n
      1. \n

        \u30e1\u30fc\u30eb\u306e\u306a\u308a\u3059\u307e\u3057 \u2013 Wikipedia<\/a><\/p>\n<\/li>\n

      2. \n

        \u30e1\u30fc\u30eb\u306e\u306a\u308a\u3059\u307e\u3057\u3068\u306f? \u2013 \u30ce\u30fc\u30c8\u30f3<\/a><\/p>\n<\/li>\n

      3. \n

        \u96fb\u5b50\u30e1\u30fc\u30eb\u306e\u306a\u308a\u3059\u307e\u3057\u3092\u7406\u89e3\u3059\u308b \u2013 Cisco<\/a><\/p>\n<\/li>\n<\/ol>\n

        \u96fb\u5b50\u30e1\u30fc\u30eb\u306e\u306a\u308a\u3059\u307e\u3057\u306e\u80cc\u5f8c\u306b\u3042\u308b\u30e1\u30ab\u30cb\u30ba\u30e0\u3092\u7406\u89e3\u3057\u3001\u5f37\u529b\u306a\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u5bfe\u7b56\u3092\u5b9f\u65bd\u3059\u308b\u3053\u3068\u3067\u3001\u500b\u4eba\u3084\u7d44\u7e54\u306f\u3053\u306e\u4e00\u822c\u7684\u306a\u30b5\u30a4\u30d0\u30fc\u8105\u5a01\u306b\u5bfe\u3059\u308b\u8106\u5f31\u6027\u3092\u5927\u5e45\u306b\u8efd\u6e1b\u3067\u304d\u307e\u3059\u3002<\/p>","protected":false},"featured_media":477073,"menu_order":0,"template":"","meta":{"_acf_changed":false,"content-type":"","inline_featured_image":false,"footnotes":""},"class_list":["post-477072","wiki","type-wiki","status-publish","has-post-thumbnail","hentry"],"acf":{"faq_title":"Frequently Asked Questions about Email Spoofing: An In-depth Overview<\/mark>","faq_items":[{"question":"What is email spoofing?","answer":"

        Email spoofing is a deceptive practice where the header information of an email is manipulated to impersonate another individual or entity. This method is typically used in phishing attacks and spam campaigns with the intention to deceive the recipient.<\/p>"},{"question":"When did email spoofing first begin?","answer":"

        Email spoofing has been in existence as long as email itself, with the first instances occurring during the early 1970s. The term \"spoofing\" came into tech context from a 1980s British comedy show \"Spitting Image\" that featured puppet caricatures of famous people.<\/p>"},{"question":"How does email spoofing work?","answer":"

        Email spoofing works by altering the email header to make it appear as though the message is coming from a different source. The 'From', 'Reply-To', and 'Return-Path' fields are changed to reflect the email address of a trusted sender, thus misleading the recipient into thinking the email is legitimate.<\/p>"},{"question":"What are some key features of email spoofing?","answer":"

        The key features of email spoofing include a disguised sender address, misleading content, hidden true origin, and exploitation of trust. These features make it difficult for recipients to recognize the fraudulent nature of the email.<\/p>"},{"question":"What are some types of email spoofing?","answer":"

        Some types of email spoofing include display name spoofing, direct spoofing, look-alike domain spoofing, and cousin domain spoofing. Each type involves a different method of disguising the sender's address to impersonate a trusted source.<\/p>"},{"question":"What problems can email spoofing cause and how can they be solved?","answer":"

        Email spoofing can lead to problems like identity theft, financial loss, and damage to a company's reputation. Solutions to these issues include technologies like SPF (Sender Policy Framework), DKIM (DomainKeys Identified Mail), and DMARC (Domain-based Message Authentication Reporting and Conformance), which authenticate sender's addresses and emails.<\/p>"},{"question":"How does email spoofing compare with similar tactics like phishing and spam?","answer":"

        Email spoofing is a method used within phishing and spam tactics. In phishing, it's used to fraudulently obtain sensitive data by impersonating a trusted source. In the context of spam, email spoofing is used to make unsolicited bulk messages appear legitimate to increase the chances of them being opened.<\/p>"},{"question":"How can future technologies help combat email spoofing?","answer":"

        Future technologies like machine learning, AI, and blockchain may be used to combat email spoofing. Machine learning and AI can be trained to recognize and remove spoofed emails, while blockchain could potentially be used to authenticate digital communications.<\/p>"},{"question":"How can proxy servers be used in relation to email spoofing?","answer":"

        While proxy servers do not directly contribute to email spoofing, they can be part of the solution. Proxy servers provide an additional layer of security and anonymity by masking the user's original IP address, thus offering protection against potential spoofing attacks.<\/p>"}]},"_links":{"self":[{"href":"https:\/\/oneproxy.pro\/jp\/wp-json\/wp\/v2\/wiki\/477072","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/oneproxy.pro\/jp\/wp-json\/wp\/v2\/wiki"}],"about":[{"href":"https:\/\/oneproxy.pro\/jp\/wp-json\/wp\/v2\/types\/wiki"}],"version-history":[{"count":0,"href":"https:\/\/oneproxy.pro\/jp\/wp-json\/wp\/v2\/wiki\/477072\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/oneproxy.pro\/jp\/wp-json\/wp\/v2\/media\/477073"}],"wp:attachment":[{"href":"https:\/\/oneproxy.pro\/jp\/wp-json\/wp\/v2\/media?parent=477072"}],"curies":[{"name":"\u3046\u30fc\u3093","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}