Computer locks are generally secured in place with a key or combination lock attached to a rubberized metal cable. The end of the cable has a small loop that allows the cable to be looped around a permanent object, such as a heavy table or other similar equipment, thus securing it in place. However, computer locks are not designed to be an impervious protection measure. Because most computer equipment cases are generally made of plastic or thin metal, the lock can be torn out, though not without doing significant visual damage to the case.