Will Passphrases Foretell the Death of Pa55.W0rd5?
Opinion: Microsoft blogger starts controversy over the proper password techniques, but the answer isn't so obvious.How long and complex should a password be? At what point is it effectively uncrackable? Time out: Look at that opening paragraph. Its 87 characters long, but it could be your password to your Windows system. Yes, even with the spaces in it. Technically, this has become known as a "passphrase." Robert Hensing, a member of Microsofts Security Incident Response Team, has written in his blog that you shouldnt use passwords anymore for Windows systemsyou should use passphrases. The blog entry has generated a lot of interest on security lists. Many agree with Hensing, and theres a lot I like about the idea. The discussions also raised my awareness of cracking tools for Windows passwords that do things you might not believe possible.
My opening lines might not make a good passphrase because its not very memorable. But lets say youre a Dead Head: "Its just a box of rain, I dont know who put it there" is a very strong passphrase, and it might be easy to remember. It has upper and lower case, punctuation and 58 characters. The downside relative to a more conventional password is that it has upper and lower case, punctuation and 58 characters. Its going to take a while to type, and youre more likely to make mistakes on it.