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差分 - Anti-surveillance

差分

移動先: 案内検索
編集の要約なし
持参する場合でもパスワードによる保護や暗号化という選択肢もあります。つねに、パスワード保護をすることです。しかし、携帯のパスワード保護はアクセスを阻止する上でさほど役にはたたず、パスワード保護や携帯のロックは専門のフォレンジック分析家<ref>(訳注)フォレンジック: ここでは「デジタル・フォレンジック」を指す。デジタル・フォレンジックとは『警察白書』によると「デジタル犯罪の立証のためんお電磁的記録の解析技術やその手続」と定義されている。(羽室英太郎他編著『デジタル・フォレンジック概論』東京法令出版参照)</ref>には効果がないことを覚えておいてください。アンドロイドやiPhoneにはOSにフルディスク暗号化のオプションがあるので、これを使うべきです。<ref>フルディスク暗号化にためにはセキュリティの設定の変更が必要なだででなく、いったんデータを工場出荷時にリセット(メモリに蓄積されたデータは全て失なわれる)してメモリを暗号化しなければならない。携帯などに保存されているデータを失ないたくないならば、PCなどにデータのバックアップをとってから実行する必要がある。</ref>とはいえ最も安全なオプションは、抗議行動に持っていかないことであるのは変りはありません。
携帯の暗号化の問題にひとつは、アンドロイドの場合であれば、ディスク暗号化と画面ロック解除の両方に同じパスワードを使うという点にあります。これは好ましくない設計です。というのも、同じ文字列を使うとなると、暗号化には弱すぎるパスワードを選ぶか、入力するには長すぎて不便なパスワードを画面ロック解除に使わざるをえないからです。最適な方法は、デバイスに速やかに入力できるけれどもまずまずのランダムな8桁から12桁の文字を使うということです。あるいは、もしあなたのアンドロイドにroot<ref>root: UnixやLinuxでよく用いられる表現で、一般ユーザには認められていないコンピュータのありとあらゆる設定やプログラムなどにアクセスして変更、削除など全能の権限をもつユーザのこと。ネットワークの管理者はこのrootの権限を与えられることによってネットワークのセキュリティを管理できる反面、メールの内容などユーの個人情報にもアクセスできてしまう。UnixやLinuxでよく用いられる表現で、一般ユーザには認められていないコンピュータのありとあらゆる設定やプログラムなどにアクセスして変更、削除など全能の権限をもつユーザのこと。ネットワークの管理者はこのrootの権限を与えられることによってネットワークのセキュリティを管理できる反面、メールの内容などユーザの個人情報にもアクセスできてしまう。</ref>でアクセスできてshell<ref>shell: コンピュータのOS(オペレーティングシステム)を構成するソフトウェアの一つで、利用者からの操作の受け付けや、利用者への情報の提示などを担当するもの。(IT用語辞典 e-words.jp)l</ref>の使い方を知っているのであれば、画面ロックパスワードとは別に、フルディスク暗号化のための長いパスワードを設定する方法が使える。下記その方法があるので、これを使ってください。(リンク先英語)
https://code.google.com/p/android/issues/detail?id=29468

案内メニュー


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