Bumping locks

Abstract

How to open Mul-T-Lock (pin-in-pin, interactive, 7x7), Assa (6000 Twin), DOM (ix, dimple with ball), LIPS (Octro dimple), Evva TSC, ISEO (dimple & standard), Corbin, Pfaffenhain and a variety of other expensive mechanical locks without substantial damage, usually in under 30 seconds, with little training and using only inexpensive tools.In this paper we describe an underestimated lock-opening technique by which a large variety of mechanical locks can be opened quickly and without damage by a relatively untrained attacker. Among other things we examine how this works, why it works better on some locks than on others, whether one could detect that this technique was used against a lock and what the lock-industry could do to protect new locks against this technique. Understanding the threat of this new method of manipulating locks is of added importance because we have found that this method actually works better on the more expensive mechanical locks generally considered to be most resistant to manipulation.