{"id":14777,"date":"2026-01-19T14:28:29","date_gmt":"2026-01-19T11:28:29","guid":{"rendered":"https:\/\/smspva.com\/blog\/how-often-change-passwords-2026-ja\/"},"modified":"2026-01-19T14:28:29","modified_gmt":"2026-01-19T11:28:29","slug":"how-often-change-passwords-2026-ja","status":"publish","type":"post","link":"https:\/\/smspva.com\/blog\/ja\/how-often-change-passwords-2026-ja\/","title":{"rendered":"2026\u5e74\u306b\u30d1\u30b9\u30ef\u30fc\u30c9\u3092\u3069\u306e\u304f\u3089\u3044\u306e\u983b\u5ea6\u3067\u5909\u66f4\u3059\u3079\u304d\u3067\u3059\u304b"},"content":{"rendered":"\n<style>article{font-family:Arial,Helvetica,sans-serif;line-height:1.6;color:#1b1b1b} .container{max-width:900px;margin:0 auto;padding:20px} .kicker{display:flex;gap:8px;align-items:center;flex-wrap:wrap;margin:6px 0 12px} .badge{background:#eef3ff;color:#1a1a1a;padding:4px 10px;border-radius:999px;font-size:12px} header h1{font-size:2rem;margin:0 0 8px} section{margin:28px 0} table{width:100%;border-collapse:collapse} th,td{border:1px solid #ddd;padding:8px;text-align:left} .cta{display:flex;gap:12px;margin:18px 0} a.btn{background:#0a6bd8;color:#fff;padding:12px 16px;text-decoration:none;border-radius:6px} a.btn.secondary{background:#555} ul{margin:0 0 8px 20px} ul.inline{margin:0;padding:0;list-style:none;display:flex;gap:12px} @media (max-width:700px){ .container{padding:12px} header h1{font-size:1.5rem}} <\/style><article class='container' itemscope itemtype='https:\/\/schema.org\/TechArticle'> <header><img src='\/storage\/articles\/how-often-change-passwords-2026.png' alt='2026\u5e74\u306e\u30d1\u30b9\u30ef\u30fc\u30c9\u5909\u66f4\u983b\u5ea6 - \u30d1\u30b9\u30ef\u30fc\u30c9\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u306e\u30a4\u30f3\u30d5\u30a9\u30b0\u30e9\u30d5\u30a3\u30c3\u30af'> <div class='kicker'> <span class='badge'>\u30b0\u30ed\u30fc\u30d0\u30eb<\/span> <span class='badge'>\u30d1\u30b9\u30ef\u30fc\u30c9\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3<\/span> <span class='badge'>\u30ef\u30f3\u30bf\u30a4\u30e0\u30d1\u30b9\u30ef\u30fc\u30c9\u3068MFA<\/span> <\/div> <h1>2026\u5e74\u306b\u30d1\u30b9\u30ef\u30fc\u30c9\u3092\u3069\u306e\u304f\u3089\u3044\u306e\u983b\u5ea6\u3067\u5909\u66f4\u3059\u3079\u304d\u3067\u3059\u304b<\/h1> <\/header> <p>2026\u5e74\u306b\u30d1\u30b9\u30ef\u30fc\u30c9\u3092\u3069\u306e\u304f\u3089\u3044\u306e\u983b\u5ea6\u3067\u5909\u66f4\u3059\u3079\u304d\u3067\u3059\u304b\uff1f \u7d50\u8ad6\u306f\u56fa\u5b9a\u30ab\u30ec\u30f3\u30c0\u30fc\u306b\u306f\u3042\u308a\u307e\u305b\u3093\u3002 \u59a5\u5354\u306e\u75d5\u8de1\u3092\u793a\u3059\u5146\u5019\u3068\u5065\u5168\u306a\u7ba1\u7406\u3092\u7d44\u307f\u5408\u308f\u305b\u3066\u3001\u30a2\u30ab\u30a6\u30f3\u30c8\u3092\u5b89\u5168\u306b\u4fdd\u3061\u306a\u304c\u3089\u4e0d\u5fc5\u8981\u306a\u5909\u66f4\u3092\u907f\u3051\u307e\u3057\u3087\u3046\u3002<\/p> <div class='tl-dr'> <h2>\u8981\u7d04<\/h2> <ul> <li>\u4fb5\u5bb3\u304c\u306a\u3044\u9650\u308a\u3001\u53b3\u5bc6\u306a\u30b9\u30b1\u30b8\u30e5\u30fc\u30eb\u3067\u30d1\u30b9\u30ef\u30fc\u30c9\u3092\u5909\u66f4\u3057\u306a\u3044\u3067\u304f\u3060\u3055\u3044\u3002<\/li> <li>\u4fe1\u983c\u3067\u304d\u308b\u30d1\u30b9\u30ef\u30fc\u30c9\u30de\u30cd\u30fc\u30b8\u30e3\u3092\u4f7f\u7528\u3057\u3001\u3059\u3079\u3066\u306e\u91cd\u8981\u306a\u30a2\u30ab\u30a6\u30f3\u30c8\u3067MFA\u3092\u6709\u52b9\u306b\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/li> <li>\u6f0f\u6d29\u307e\u305f\u306f\u4fb5\u5bb3\u304c\u7591\u308f\u308c\u308b\u5834\u5408\u306f\u3059\u3050\u306b\u30d1\u30b9\u30ef\u30fc\u30c9\u3092\u5909\u66f4\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/li> <\/ul> <\/div> <section class='why-use'> <h2>\u5f37\u529b\u306a\u30d1\u30b9\u30ef\u30fc\u30c9\u885b\u751f\u3092\u4fdd\u3064\u7406\u7531<\/h2> <p>\u5f37\u529b\u306a\u30d1\u30b9\u30ef\u30fc\u30c9\u306e\u885b\u751f\u306f\u8a8d\u8a3c\u60c5\u5831\u306e\u8a70\u3081\u8fbc\u307f\u653b\u6483\u3068\u30d5\u30a3\u30c3\u30b7\u30f3\u30b0\u306e\u30ea\u30b9\u30af\u3092\u6e1b\u3089\u3057\u307e\u3059\u3002 \u5404\u30b5\u30fc\u30d3\u30b9\u3054\u3068\u306b\u56fa\u6709\u306e\u30d1\u30b9\u30ef\u30fc\u30c9\u3068MFA\u3092\u7d44\u307f\u5408\u308f\u305b\u308b\u3068\u3001\u4e0d\u6b63\u30a2\u30af\u30bb\u30b9\u306e\u53ef\u80fd\u6027\u3092\u5927\u5e45\u306b\u4e0b\u3052\u3089\u308c\u307e\u3059\u3002\u4fe1\u983c\u3067\u304d\u308b\u30ac\u30a4\u30c9\u30e9\u30a4\u30f3\u306b\u3064\u3044\u3066\u306f <a href='https:\/\/www.ncsc.gov.uk\/collection\/passwords' target='_blank' rel=\"noopener\">NCSC \u306e\u30d1\u30b9\u30ef\u30fc\u30c9\u30ac\u30a4\u30c9\u30e9\u30a4\u30f3<\/a> \u3068 <a href='https:\/\/en.wikipedia.org\/wiki\/Password' target='_blank' rel=\"noopener\">Wikipedia: Password<\/a> \u3092\u53c2\u7167\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p> <\/section> <section class='how-to'> <h2>\u30d1\u30b9\u30ef\u30fc\u30c9\u5909\u66f4\u3092\u5b89\u5168\u306b\u7ba1\u7406\u3059\u308b\u65b9\u6cd5<\/h2> <ol> <li>\u3059\u3079\u3066\u306e\u30a2\u30ab\u30a6\u30f3\u30c8\u3067MFA\u3092\u6709\u52b9\u306b\u3059\u308b\u3002<\/li> <li>\u4fe1\u983c\u3067\u304d\u308b\u30d1\u30b9\u30ef\u30fc\u30c9\u30de\u30cd\u30fc\u30b8\u30e3\u3092\u4f7f\u7528\u3057\u3066\u4e00\u610f\u306e\u30d1\u30b9\u30ef\u30fc\u30c9\u3092\u4fdd\u5b58\u3059\u308b\u3002<\/li> <li>\u30b5\u30a4\u30c8\u3084\u30b5\u30fc\u30d3\u30b9\u9593\u3067\u30d1\u30b9\u30ef\u30fc\u30c9\u3092\u4f7f\u3044\u56de\u3055\u306a\u3044\u3002<\/li> <li>\u4fb5\u5bb3\u306e\u7591\u3044\u304c\u3042\u308b\u5834\u5408\u3084\u4e0d\u5be9\u306a\u6d3b\u52d5\u304c\u898b\u3089\u308c\u305f\u5834\u5408\u306f\u76f4\u3061\u306b\u30d1\u30b9\u30ef\u30fc\u30c9\u3092\u5909\u66f4\u3059\u308b\u3002<\/li> <li>\u6a5f\u5bc6\u6027\u306e\u9ad8\u3044\u30a2\u30ab\u30a6\u30f3\u30c8\uff08\u9280\u884c\u3001\u30e1\u30fc\u30eb\u306a\u3069\uff09\u306e\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u8a2d\u5b9a\u3092\u5b9a\u671f\u7684\u306b\u898b\u76f4\u3059\u3002<\/li> <li>\u30de\u30eb\u30a6\u30a7\u30a2\u3092\u907f\u3051\u3001\u30ea\u30b9\u30af\u3092\u6e1b\u3089\u3059\u305f\u3081\u306b\u30c7\u30d0\u30a4\u30b9\u3092\u6700\u65b0\u306e\u72b6\u614b\u306b\u4fdd\u3064\u3002<\/li> <\/ol> <\/section> <section class='comparison'> <h2>\u30ed\u30fc\u30c6\u30fc\u30b7\u30e7\u30f3\u983b\u5ea6\u3068\u30ea\u30b9\u30af\uff08\u30af\u30a4\u30c3\u30af\u8868\uff09<\/h2> <table> <thead><tr><th>\u30b7\u30ca\u30ea\u30aa<\/th><th>\u63a8\u5968\u3055\u308c\u308b\u5bfe\u5fdc<\/th><\/tr><\/thead> <tbody> <tr><td>\u4fb5\u5bb3\u306a\u3057\u3001MFA\u6709\u52b9<\/td><td>\u5b9a\u671f\u7684\u306a\u5909\u66f4\u306f\u4e0d\u8981; \u30ea\u30b9\u30af\u3092\u76e3\u8996<\/td><\/tr> <tr><td>\u30d1\u30b9\u30ef\u30fc\u30c9\u304c\u6f0f\u6d29\u307e\u305f\u306f\u6d41\u51fa<\/td><td>\u76f4\u3061\u306b\u5909\u66f4\u3057\u3001\u4ed6\u306e\u30a2\u30ab\u30a6\u30f3\u30c8\u3092\u78ba\u8a8d<\/td><\/tr> <tr><td>\u9ad8\u30ea\u30b9\u30af\u30b5\u30fc\u30d3\u30b9\uff08\u9280\u884c\u306a\u3069\uff09<\/td><td>\u7ba1\u7406\u3092\u5f37\u5316\u3057\u3001\u5b9a\u671f\u7684\u306a\u30c1\u30a7\u30c3\u30af\u3092\u691c\u8a0e<\/td><\/tr> <tr><td>\u65b0\u898f\u30c7\u30d0\u30a4\u30b9\u306e\u4fb5\u5bb3\u30ea\u30b9\u30af<\/td><td>\u5f71\u97ff\u3092\u53d7\u3051\u305f\u30d1\u30b9\u30ef\u30fc\u30c9\u3092\u5909\u66f4<\/td><\/tr> <\/tbody> <\/table> <\/section> <section class='safe'> <h2>\u5b89\u5168\u306a\u4f7f\u3044\u65b9\u3068\u6cd5\u7684\u9075\u5b88<\/h2> <p>\u30b5\u30fc\u30d3\u30b9\u306e\u5229\u7528\u898f\u7d04\u3068\u30d7\u30e9\u30a4\u30d0\u30b7\u30fc\u30dd\u30ea\u30b7\u30fc\u3092\u5e38\u306b\u9075\u5b88\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u30d1\u30b9\u30ef\u30fc\u30c9\u30de\u30cd\u30fc\u30b8\u30e3\u30fc\u3092\u8cac\u4efb\u3092\u6301\u3063\u3066\u4f7f\u7528\u3057\u3001\u30d1\u30b9\u30ef\u30fc\u30c9\u3092\u5e73\u6587\u3067\u4fdd\u5b58\u3057\u306a\u3044\u3067\u304f\u3060\u3055\u3044\u3002<\/p> <\/section> <section class='faq'> <h2>\u3088\u304f\u3042\u308b\u8cea\u554f<\/h2> <ul> <li><strong>\u30d1\u30b9\u30ef\u30fc\u30c9\u309290\u65e5\u3054\u3068\u306b\u5909\u66f4\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u304b\uff1f<\/strong><br>\u5fc5\u305a\u3057\u3082\u305d\u3046\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u4fb5\u5bb3\u306e\u75d5\u8de1\u304c\u3042\u308b\u5834\u5408\u3084\u30dd\u30ea\u30b7\u30fc\u3067\u5909\u66f4\u304c\u6c42\u3081\u3089\u308c\u308b\u5834\u5408\u306b\u5909\u66f4\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/li> <li><strong>\u30d1\u30b9\u30ef\u30fc\u30c9\u3092\u5f37\u304f\u3059\u308b\u306b\u306f\u4f55\u304c\u5fc5\u8981\u3067\u3059\u304b\uff1f<\/strong><br>\u9577\u304f\u3001\u56fa\u6709\u3067\u4e88\u6e2c\u4e0d\u80fd\u3067\u3001\u6587\u5b57\u7a2e\u306e\u7d44\u307f\u5408\u308f\u305b\u3092\u542b\u3080\u3053\u3068\u3002\u30d1\u30b9\u30ef\u30fc\u30c9\u30de\u30cd\u30fc\u30b8\u30e3\u30fc\u306e\u6d3b\u7528\u3092\u691c\u8a0e\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/li> <li><strong>MFA\u3060\u3051\u3067\u30a2\u30ab\u30a6\u30f3\u30c8\u3092\u4fdd\u8b77\u3067\u304d\u307e\u3059\u304b\uff1f<\/strong><br>MFA\u306f\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u3092\u5927\u5e45\u306b\u5411\u4e0a\u3055\u305b\u307e\u3059\u304c\u3001\u56fa\u6709\u306e\u30d1\u30b9\u30ef\u30fc\u30c9\u3092\u4f7f\u7528\u3057\u3001\u4fb5\u5bb3\u3092\u76e3\u8996\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/li> <li><strong>\u81ea\u5206\u306e\u30d1\u30b9\u30ef\u30fc\u30c9\u304c\u6f0f\u6d29\u3057\u305f\u304b\u3069\u3046\u304b\u306f\u3069\u3046\u5206\u304b\u308a\u307e\u3059\u304b\uff1f<\/strong><br>\u6f0f\u6d29\u901a\u77e5\u3092\u78ba\u8a8d\u3057\u3001\u6f0f\u6d29\u30a2\u30e9\u30fc\u30c8\u30b5\u30fc\u30d3\u30b9\u3092\u5229\u7528\u3057\u3066\u60c5\u5831\u3092\u5f97\u3066\u304f\u3060\u3055\u3044\u3002<\/li> <li><strong>\u306a\u305c\u30d1\u30b9\u30ef\u30fc\u30c9\u30de\u30cd\u30fc\u30b8\u30e3\u30fc\u3092\u4f7f\u3046\u306e\u3067\u3059\u304b\uff1f<\/strong><br>\u30d1\u30b9\u30ef\u30fc\u30c9\u30de\u30cd\u30fc\u30b8\u30e3\u30fc\u306f\u56fa\u6709\u306e\u30d1\u30b9\u30ef\u30fc\u30c9\u3092\u5b89\u5168\u306b\u4fdd\u7ba1\u3057\u3001\u5f37\u529b\u306a\u30d1\u30b9\u30ef\u30fc\u30c9\u3092\u751f\u6210\u3057\u3066\u518d\u5229\u7528\u3092\u6e1b\u3089\u3057\u307e\u3059\u3002<\/li> <li><strong>\u30d1\u30b9\u30ef\u30fc\u30c9\u3092\u5fd8\u308c\u305f\u5834\u5408\u306f\u3069\u3046\u3057\u307e\u3059\u304b\uff1f<\/strong><br>\u56de\u5fa9\u30d7\u30ed\u30bb\u30b9\u3092\u4f7f\u7528\u3057\u3001\u4fe1\u983c\u3067\u304d\u308b\u30c4\u30fc\u30eb\u3067\u65b0\u3057\u3044\u30d1\u30b9\u30ef\u30fc\u30c9\u3092\u751f\u6210\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/li> <\/ul> <\/section> <div class='cta'> <a class='btn' href='https:\/\/smspva.com\/generate-password.html' target='_blank' rel=\"noopener\">\u5f37\u529b\u306a\u30d1\u30b9\u30ef\u30fc\u30c9\u3092\u751f\u6210<\/a> <a class='btn secondary' href='https:\/\/en.wikipedia.org\/wiki\/Password' target='_blank' rel=\"noopener\">\u30d1\u30b9\u30ef\u30fc\u30c9\u306b\u3064\u3044\u3066\u5b66\u3076<\/a> <\/div> <footer> <p>\u6ce8: \u6700\u5584\u306e\u5b9f\u8df5\u306e\u305f\u3081\u5916\u90e8\u30ea\u30bd\u30fc\u30b9\u3078\u306e\u30ea\u30f3\u30af\u3092\u63d0\u4f9b\u3057\u3066\u3044\u307e\u3059\u3002\u30d1\u30b9\u30ef\u30fc\u30c9\u306e\u518d\u5229\u7528\u3092\u907f\u3051\u3001\u53ef\u80fd\u306a\u5834\u5408\u306fMFA\u3092\u6709\u52b9\u306b\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p> <\/footer>\n","protected":false},"excerpt":{"rendered":"<p>\u30b0\u30ed\u30fc\u30d0\u30eb \u30d1\u30b9\u30ef\u30fc\u30c9\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3 \u30ef\u30f3\u30bf\u30a4\u30e0\u30d1\u30b9\u30ef\u30fc\u30c9\u3068MFA 2026\u5e74\u306b\u30d1\u30b9\u30ef\u30fc\u30c9\u3092\u3069\u306e\u304f\u3089\u3044\u306e\u983b\u5ea6\u3067\u5909\u66f4\u3059\u3079\u304d\u3067\u3059\u304b 2026\u5e74\u306b\u30d1\u30b9\u30ef\u30fc\u30c9\u3092\u3069\u306e\u304f\u3089\u3044\u306e\u983b\u5ea6\u3067\u5909\u66f4\u3059\u3079\u304d\u3067\u3059\u304b\uff1f \u7d50\u8ad6\u306f\u56fa\u5b9a\u30ab\u30ec\u30f3\u30c0\u30fc\u306b\u306f\u3042\u308a\u307e\u305b\u3093\u3002 \u59a5\u5354\u306e\u75d5\u8de1\u3092\u793a\u3059\u5146\u5019\u3068\u5065\u5168\u306a\u7ba1\u7406\u3092\u7d44\u307f\u5408\u308f\u305b\u3066\u3001\u30a2\u30ab\u30a6\u30f3\u30c8\u3092\u5b89\u5168\u306b\u4fdd\u3061\u306a\u304c\u3089\u4e0d\u5fc5\u8981\u306a\u5909\u66f4\u3092\u907f\u3051\u307e\u3057\u3087\u3046\u3002 \u8981\u7d04 \u4fb5\u5bb3\u304c\u306a\u3044\u9650\u308a\u3001\u53b3\u5bc6\u306a\u30b9\u30b1\u30b8\u30e5\u30fc\u30eb\u3067\u30d1\u30b9\u30ef\u30fc\u30c9\u3092\u5909\u66f4\u3057\u306a\u3044\u3067\u304f\u3060\u3055\u3044\u3002 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