I rode by a bus stop last night, and noticed half a bike out of the corner of my eye, at a bus stop next to my lane. So I stopped to have a quick look, and to learn from someone else's mistake.

The frame was locked to a sign post, with a pretty flimsy cable lock. The fork was gone, along with the front wheel, saddle, and seat post. Oddly, the back wheel, bars, shifters, stem and brakes were still on the bike, along with the drive train. This was a Trek mountain/hybrid bike, by the way, and probably had a decent suspension on the fork.

Somebody could have at least kept the front wheel by locking it up with the frame, or with locking skewers. I don't think there's much you can do about the seatpost (this one wasn't a quick release) or the fork, though. At least that I know of.

I would never park my bike where this one got vandalized, and I guess that's the first line of defense. Is there anything else you can do?