http://www.theregister.co.uk/2008/06/26/fired_it_manager_rampage/

I keep seeing stories about people "hacking" into their former employers. You have to wonder if she used a SQL injection exploit to access the database or maybe a buffer overflow. I am guessing neither but instead used her only credentials that were not changed after she was fired. In my opinion that's no more hacking than claiming a building was broken into after an ex-employee used keys they didn't turn in to unlock a door. Sure they were trespassing but they didn't "break in".