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  2. Microsoft Office password protection - Wikipedia

    en.wikipedia.org/wiki/Microsoft_Office_password...

    In Excel and Word 95 and prior editions a weak protection algorithm is used that converts a password to a 16-bit verifier and a 16-byte XOR obfuscation array [1] key. [4] Hacking software is now readily available to find a 16-byte key and decrypt the password-protected document. [5] Office 97, 2000, XP and 2003 use RC4 with 40 bits. [4]

  3. KeePass - Wikipedia

    en.wikipedia.org/wiki/KeePass

    However, a separate plugin provides Twofish as an encryption algorithm in KeePass 2.x. In KeePass 1.x (KDB database format), the integrity of the data is checked using a SHA-256 hash of the plaintext, whereas in KeePass 2.x (KDBX database format), the authenticity of the data is ensured using a HMAC-SHA-256 hash of the ciphertext (Encrypt-then ...

  4. PDF - Wikipedia

    en.wikipedia.org/wiki/PDF

    A PDF file may be encrypted, for security, in which case a password is needed to view or edit the contents. PDF 2.0 defines 256-bit AES encryption as the standard for PDF 2.0 files. The PDF Reference also defines ways that third parties can define their own encryption systems for PDF.

  5. Data at rest - Wikipedia

    en.wikipedia.org/wiki/Data_at_Rest

    Because of its nature data at rest is of increasing concern to businesses, government agencies and other institutions. [4] Mobile devices are often subject to specific security protocols to protect data at rest from unauthorized access when lost or stolen [7] and there is an increasing recognition that database management systems and file servers should also be considered as at risk; [8] the ...

  6. Encrypting File System - Wikipedia

    en.wikipedia.org/wiki/Encrypting_File_System

    The Encrypting File System (EFS) on Microsoft Windows is a feature introduced in version 3.0 of NTFS [1] that provides filesystem-level encryption.The technology enables files to be transparently encrypted to protect confidential data from attackers with physical access to the computer.

  7. Secure your AOL account

    help.aol.com/articles/secure-your-aol-account

    • Use a strong password and change it regularly - Create a strong password to minimize the risk of unauthorized account access. • Add another level of security - Turn on two-step verification and get sent a security code when someone logs in from an unfamiliar device or location.

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