Bicycle thefts are not uncommon. In fact, bikes are stolen all the time from a variety of locations. For this reason, a myriad of locks and security devices have been designed to keep bikes in the hands of their owners.
Despite their claims, most locks and security devices simply slow thieves down. A determined thief can defeat the best locks. Sometimes the object the bike is locked to can be a weak point and the thief can damage it to get the bike free. There is no end to the creativity bike thieves show when they really want a bike they have spotted.
Many cyclists see locking a bike as something they must do when away from home. After all, their bike is in unfamiliar territory and there is no telling who might be lurking about. This seems like the ideal scenario for bike theft.