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安全なパスワードを作成してアカウントのセキュリティを強化する ...
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ドを作成してアカウントのセキュリティを強化する

安全なパスワードを作成して再設定用の情報を更新することで、Google アカウントの保護を強化できます。推測しにくいパスワードを使用してください。また、生年月日や電話番号などの個人情報は含めないでください。

ステップ 1: 安全なパスワードを作成する

パスワードを強力にすると、次の点において役立ちます。

  • 個人情報を安全に保管する
  • メール、ファイル、その他のコンテンツを保護する
  • 他人がアカウントにアクセスできないようにする

パスワードの要件を満たす

パスワードには、半角の英字、数字、記号(ASCII 標準文字のみ)を組み合わせて使用できます。アクセント記号やアクセント記号付き文字は使用できません。

次のようなパスワードは使用できません。

  • 安全性が著しく低いパスワード(「password123」など)
  • お使いのアカウントで以前に使用したことがあるパスワード
  • スペースで開始または終了するパスワード

安全なパスワードを作成するためのヒント

自分にとって覚えやすく、他人にはまず推測されないパスワードこそ、安全と言えます。安全なパスワードを作成するヒントは次のとおりです。

パスワードは使い回さない

メールやオンライン バンキングなど、重要なアカウントには別々のパスワードを使用しましょう。

重要なアカウントでパスワードを使い回すのは危険です。1 か所でパスワードを入手されてしまうと、メールや連絡先だけでなく、お金さえも他人の手に渡る可能性があります。

ヒント: 複数のパスワードを覚えるのが難しい場合は、保存したパスワードをツールで管理する方法をご参照ください。

覚えやすくて長いパスワードを作成する

長いパスワードはより安全性が高いため、パスワードは 12 文字以上にしてください。以下のヒントは覚えやすくて長いパスワードを作成するのに役立ちますので、お試しください。

  • 歌や詩の一節
  • 映画やスピーチから引用した意味を持つ一節
  • 書籍の一節
  • 自分にとって意味を持つ一連の単語
  • 文を短縮した文字列(文中の各単語から最初の文字を抜き出してパスワードを作成する)

次のような人が推測できるパスワードは使用しないでください。

  • あなたを知っている人
  • ソーシャル メディアのプロフィールなど、簡単にアクセスできる情報を閲覧した人

個人情報や一般的な単語を使わない

個人情報を使用しない

他人に知られている情報や簡単に見つかる情報からパスワードを作成しないでください。例:

  • ニックネームまたはイニシャル
  • 子供やペットの名前
  • 自分または大切な人の誕生日または節目の年
  • 住んでいる町村や通りの名前
  • 住所の番地
  • 電話番号

一般的な単語やパターンは使用しない

単純な単語やフレーズ、推測されやすいパターンは使用しないでください。例:

  • 「password」や「hirakegoma」など、すぐに推測できる単語やフレーズ
  • 「abcd」や「1234」など、連続した文字列や数字
  • 「qwerty」や「qazwsx」など、キーボードの文字列

パスワードを安全に保管する

安全なパスワードを作成したら、次の手順に沿って安全に保管してください。

書き留めたパスワードを他人に見られない場


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