Amazon Glitch Leads to Password Risk
A problem with passwords at Amazon has been discovered whereby users, in certain situations, can log in with variants of their passwords. It seems likely that Amazon used a specific encryption function that truncates any passwords longer than 8 characters. As Wired points out: if your password is “Password,” Amazon.com will also let you log [...]
http://blog.intego.com/2011/01/29/amazon-password-glitch-leads-to-password-risk/