利用しているサイトのいくつかは，3か月〜半年で，パスワードの変更を求めてきます．<\/p>\n
昔はめんどくさいけど，そのほうが安全かと自分でも漠然と考えて，黙って従っていました．しかし，一年くらい前に，パスワードを定期的に変えることがセキュリティー上安全とはいえないという専門家の意見を目にし，調べてみるとかなり多くの専門家が同様の意見を書いています．<\/p>\n
特に，定期的にパスワード変更を推奨し始めた専門家が，そのことを悔いているというのは驚くべきことであり，そう聞いたらまともな心ある人は定期的なパスワード変更など即座にやめるべきと思います．<\/p>\n
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