Guidelines for Creating Strong Passwords

Windows Mobile 6.5
4/8/2010

To help keep a Windows Mobile device more secure, the device should be configured to use a strong password and the password should be changed regularly. Passwords can be the weakest link in a computer security scheme. Strong, hard-to-guess passwords are important because the tools and computers that people use to guess passwords continue to improve. Use these guidelines as tips to create secure passwords.

For a password to be strong, it should:

  • Be at least seven characters long. Because of the way passwords are encrypted, the most secure passwords are seven or 14 characters long.
  • Contain at least one character from three of the following four groups:

    Group Examples

    Uppercase letters

    A, B, C...

    Lowercase letters

    a, b, c...

    Numerals

    0, 1, 2, 3, 4, 5, 6, 7, 8, 9

    Symbols

    ` ~ ! @ # $ % ^ & * ( ) _ + - = { } | [ ] \ : " ; ' < > ? , . /

  • Have at least one numeric or symbol character in the second through sixth positions.
  • Be significantly different from prior passwords.
  • Not contain your name or user name.
  • Not be a common word or name.
Bb416446.note(en-us,MSDN.10).gifNote:
Do not store your password in the Hint field on your device.

When entering a password on a Windows Mobile Professional or Windows Mobile Classic device, the dialog box presented will change based on the type of password. If the password on the device is a 4-digit PIN, the device brings up a standard PIN dialog. If the device is using a strong password, the strong password dialog will appear. This difference in behavior will occur automatically based on the type of password that has been set on the device.

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