Password Instructions

How to choose, and remember, a secure password

You can download this guide as a PDF or in Open Document format.

Remembering Passwords


It is OK to write down your passwords (or, better, just hints) on paper only if you secure that paper.

It’s a really good idea to use a secure password manager to avoid the limits of your own memory and lost pieces of paper. Password managers also allow you to use truly random passwords. We recommend Password Safe or Keepass.


A password you forget or don’t use is useless.

Do NOT make a text file or Word doc on your computer with your passwords.

Do NOT stick your password on a note on your monitor.

Do NOT email passwords.

Creating Passwords


The best encryption in the world is useless without a good password.

Use the longest password a system and your memory will allow.

When you have a choice, use a password at least 12 characters long, but longer is better.

Use as many types of characters (upper, lower, digits, letters, punctuation, spaces, symbols) as a system and your memory will allow.

Use multifactor authentication whenever it’s available.

If you use dictionary words, make them meaningful only to you, and use more than 4 words.

Long meaningless acronyms (of un1que meaningful memorable sentences) are another good option! Lma(o1m2s)aago!


Do NOT reuse passwords. Trivial variations (like changing a digit at the end) are still reuse.

Do NOT use phrases from popular culture or literature. If it can be found on Wikipedia, Google Books, RapGenius, the Internet Movie Database, or YouTube (etc.), it can be cracked automatically. Slang and texting abbreviations don’t help.

A password you share with anyone not following ALL of these rules– and then don’t immediately changeis useless.

These instructions are adapted from the password advice of respected security and cryptography expert Bruce Schneier, advice from former physicist and web cartoonist Randall Munroe, the password policy of Stanford University, and award winning security reporting by Dan Goodin of the website Ars Technica. These four sources do not agree on all points. Schneier feels that Munroe and Stanford’s advice is now outdated because of advances in cracking technology and processing speed. Goodin reports how proliferation of password-based services makes remembering all of your unique, strong passwords literally impossible.

CCHP believes that a good password is better than a weak one or none at all and still better than a great password that you forget and write down on your monitor.

If you can use a secure password manager with truly random passwords, that is still the best option.