Bart is a security geek (something which he’s been at full time for a couple years now. Before this he worked as systems administrator and as support engineer, during which time being paranoid was just something to do on the side rather than a full-time position).
So during the day the last few years he played around with things like Trusted Extensions or Role-Based Access Control or some other fascinating bit of technology.
After some changes at work he’s now spending his time studying, writing, reading, and occasionally poking at computers some more.
He occasionally sets foot in the garden, goes for a ride, or goes about getting sliced-up bits of organic matter in an oddly-shaped container vibrating.