Lol, lots of good responses. Turns out it was just Guild Banks 1 and 2 and seriously for the time it took this guy to level his toon and earn the neccesary SPs to gain access he could have looted stuff worth more than he stole.
We do a good job of keeping the value in these vaults really low so the loss wasn't significant its just the thought that someone's life is so screwed up they have to be a cyber thief as a career. i mean come on at least have the courage to be a RL thief, that's low enough without stepping down one more level.
He did loot the same vaults in Guardians and probably cycles through his toons doing this then will delete, re-roll and do it again.
Posted mainly just to let everyone know he is out there
edit:pushed post before finished typing