Jeremy states that there are more than 14,000 six-letter words which could have been Natalie's password. The actual number of possible passwords is at least 26^6 (the sixth power of 26), which is over 308 million passwords (this assumes that the case of the letters are irrelevant and that numbers and punctuation are disallowed). Presumably, the 14,000 figure represents the number of actual, legitimate six-letter words which she might have used. Usage of actual words for passwords is frowned upon for exactly this reason. Such a password is much, much easier to hack.