texts to Buffy; Before your time, there was a man here named Gabriel Gray, for over a year before he was sent back. You've likely heard the others mention him, he's one of the brilliant minds behind the bulk of our security system and he became family to a number of people here.
He was pulled here before his ability turned him into a serial killer. Before he first killed, he was a sweetheart of man, one of the single most wonderful people I ever knew. After that, he slaughtered evolved people, in one future going so far as to round them up and slaughter them in masses, to steal their powers. Like what Twilight does in Anya's future, only Sylar killed Nathan, became president and ran the country while doing it.
He intuitively understands how everything works, including people. But his power comes with a hunger, to search until he understands. Peter absorbs powers through empathy. Sylar takes them by cutting people's heads open and reading their brains.
As I said, the boards could be comprised if he has a technopathic ability. Even our system could be compromised if he can think like Gabriel before we change out all the passwords, permissions and routines.