Passphrase and Password Details

Passwords are the most frequently utilized form of authentication for accessing valuable information resources. These guidelines describe Macalester College's recommendations for creating and using passwords in ways that maximize their effectiveness. They apply to anyone accessing systems that hold or transmit Macalester College information.

The keys to password strength are length, complexity and time to refresh, especially length. An ideal password is long and includes letters, punctuation, symbols, and numbers. How to create and protect strong passwords

• Minimum length: 8 characters; 15 characters or more are recommended in order to be an effective passphrase.
• Maximum lengh: 30 characters
• Complexity: Use a variety of special characters, numbers, uppercase and lowercase letters.
• Allowable special characters: Use only an *  :  ? (asterisk, colon, and question mark). 
• Passwords cannot begin with a special character.
• Spaces and underscrores are not allowed.
• Avoid: Ordinary words in any language including slang, dialect, and jargon.
• Do not use personal identifiable information: Usernames, ID numbers, phone numbers, names of family members.
• Passwords and passphrases must be changed every 12 months.