"networking" is the best security (Score 1)

Get to be known (in a good way) by dorm staffers. I knew a guy in college who had his locked room looted because an imposter told one of the dimmer RAs that he was my friend and had been locked out by his roommate. RA opened door, not knowing friend by sight, and imposter ran off with everything.

And get a strong bolt for your bike. If there's room, keep it in your room. Crooks sometimes have bolt cutters.

By all means, enjoy an evening walk. Just don't habitually do it at 4 in the morning. Campuses still have crime, and some major universities are located in the wrong part of town.