Acronym-based passwords

SearchSecurity user Keith Langmead offers this tip for creating secure passwords using acronyms.

Keith Langmead

Acronym-based passwords

Step 2 of 2:

You forgot to provide an Email Address.

This email address doesn’t appear to be valid.

This email address is already registered. Please login.

You have exceeded the maximum character limit.

Please provide a Corporate E-mail Address.
- I agree to TechTarget’s Terms of Use, Privacy Policy, and the transfer of my information to the United States for processing to provide me with relevant information as described in our Privacy Policy.
Please check the box if you want to proceed.
- I agree to my information being processed by TechTarget and its Partners to contact me via phone, email, or other means regarding information relevant to my professional interests. I may unsubscribe at any time.
Please check the box if you want to proceed.

This tip was submitted to the SearchSecurity Tip Exchange by user Keith Langmead. Let other users know how useful it is by rating the tip below.

Like a long running battle between nations, the battle over passwords has raged between users and their system administrators for years. The users typically aren't too concerned about security, they don't understand the real purpose of having it and they want to have a simple method to login. Administrators, however, understand all too well the need for security and would therefore prefer to see everyone using a hard to guess (and therefore by inference hard to remember) password, but without using the old standby of writing them down on a sticky note.

There is a simple method that can be used to fulfil both criteria, and thus keep everyone happy, using mnemonics. For anyone who is unsure, a mnemonic is where you shorten a phrase or sentence into a shorter word. There are a lot of these in common use on the Internet. For instance, BTW = by the way, ROTFL = roll on the floor laughing, etc.

As well as this, you can employ two other techniques to make the resultant password harder to guess, while easy to remember, by creating rules with which to decide which characters become numeric or non-alphanumeric and which become upper case characters.

Here's an example:

First create a simple phrase or sentence which will be easy to remember. For example, "my server administrator lets me choose my own password." This then shortens to "msalmcmop." It's a long password, but should still be easy to remember.

Next, change some letters to other characters using the rule you have decided on earlier, so the string now becomes "m5@1mcmop."

Finally, change the case of some letters, again using the rule you decided on earlier. In this case I will convert all letters that are not next to a number or character to upper case. So, the end result becomes "m5@lMCMOP."

Now we have a system which the user can remember easily, but which would be very difficult for anyone to guess, without knowing the entire phrase used and the rules used to convert it.

This was last published in September 2001

Dig Deeper on Password management and policy

All
News
Get Started
Evaluate
Manage
Problem Solve

Related Resources

Dig Deeper on Password management and policy

Start the conversation

0 comments

Register

Login

Forgot your password?

Your password has been sent to:

Please create a username to comment.