In the movie, CIA computer whiz Petey (Greg Germann) cracks the password of the boat victim by manually guessing combinations of birthday numbers of the victim's family. This is a relic of 1994, when the internet was fledgling and most people didn't have email or anything that required a password on their personal computers. By 2000, email and other online accounts had blossomed, and more people were aware that simple passwords weren't a good idea. In 2010 meanwhile, most websites have requirements on "password entropy" and reject outright such simple passwords as too easy to crack. On a side note, as a member of the CIA, Ritter probably had a "cryptocard" or other device that told him what his password was when he logged in, and changed every hour or every minute.