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PassPhrases are a concept that will help us create more secure, easy to remember safeguards for our computer and network resource protection. A passphrase is a selection of words and/or numbers that are 15 characters or more in length, and are easy for us to remember. A couple examples of a good pass phrases are:
•igotodalaieejdaily •shehasbeautifulhair •surfinginhawaiiisgreat
According to Mark Minasi, a noted security consultant, a 15 character pass phrase will require a cracking program
following number of computations to try and break a 15 character pass phrase:
•15 lowercase letters = 1,677,259,342,285,725,925,376 possibilities •Try a million a second, it’ll take 531,855 centuries/years to break
code
As you can see, this is a pretty good level of security for your resource.
Another concern with passwords is if you forget or lose
password, and are using a utility like Microsoft’s Encrypting File System (EFS), you run
risk of losing all access to your important files if you require a hardware reset of your password. All EFS encrypted files are linked to your login profile, meaning if you encrypt a directory or file with EFS, and you do a hardware reset on your computer, those files and directories are lost FOREVER.
For Microsoft Windows users you can now also use spaces within your pass phrase, however we would not recommend embedding spaces in your pass phrase, as that actually does allow a cracker better access to getting your code – it may help them crack it in 100,000 years rather than 250,000!

(About the Author – John Savageau is a managing director at CRG-West, responsible for managing operations and architecture for several of the largest telecommunications interconnect facilities in the US, including One Wilshire in Los Angeles savageau@pacific-tier.com/www.pacific-tier.com)