This should be extended to "Never roll your own security", because that's really the crux. As many, many people have pointed out in the past, that's why books l

This should be extended to "Never roll your own security", because that's really the crux. As many, many people have pointed out in the past, that's why books like Modern Cryptography exist. In these books, they basically say "hey, use these functions and these parameters, and you probably wont die", but in this case, ALM said "screw those parameters, we're smarter than you!!!!" and rolled their own security. As noted by the article, bad move.