Bumping (from the English. Bump - hit, push, collision) - a method of opening locks, based on the transfer of kinetic energy to the pins as a result of hitting a specially machined key. The pins are randomly thrown, and by turning the bump key at the right time, you can open the lock. This method of hacking leaves no visible traces and works on tumbler-pin systems and locks with vertical secret milling.
Bump - bumping , opening the lock with blows. What's your castle?
The term "bumping" comes from the English word "bump" , which means "knock, hit . " The name very accurately describes the method of hacking: one sharp blow - and the door wide open.
Almost any cylinder lock, including the Mul-t-lock, can be easily opened using bumping , also known as the tapping method. The method is based on the fact that when hitting the upper pin, it transfers the energy of the impact to the lower, while remaining in place. At the moment of impact, the cylinder must be momentarily given a torque.
To understand how this happens, you need to remember how one of the most popular locking mechanisms in Russia is designed - a pin cylinder lock, which is also often called English. The “heart” of such a castle is the core. It is he who, turning, drives the bolt (the very metal “tongue” that “opens” and “closes” the door).
In order for the cylinder to “recognize” the native key, vertical channels are drilled in it, into each of which, in a strictly defined position, two pins are inserted - code and locking (in other words, blocking). When the lock is opened with “your” key, its teeth (or, as professionals say, “secrets”) line up the pins in the correct horizontal and vertical order, the key rotates, the cylinder rotates and the door opens.
If at least one “secret” key differs in size from the key, the pins do not line up in the correct order, and the lock remains closed. That is why it is impossible to open two locks of a similar model with the same key. Before bumping was "invented", criminals had a hard time: to open a pin lock, they needed a large set of master keys, serious experience, sensitive fingers and quite a lot of time ...
The invention of bumping in the middle of the last century in Europe greatly facilitated the professional life of “housekeepers”. The criminal inserts the prepared blank into the keyhole and sharply hits it with a small hammer or even just with a wooden brush. The bump key hits the coding pins, causing the blockers to jump in random order. In one fraction of a second, the randomly bouncing pins get into the right position, the offender turns the “pseudo-key” and the door opens.
To open a simple lock, the apartment thief sometimes has enough thin steel wire, for more complex models, blanks are made that look like a real key (in order to create them, they often “modify” keys from locks of the same type, slightly shortening them and deepening the “cutting”) . Such blanks are called bump keys or “golden keys” in Russia.
Depending on the complexity of the lock and the quality of the bump key, the door opening time is from 5 seconds to 5 minutes. And not so long ago, criminal craftsmen automated the process of hacking by creating a pick gun - a tool of the "pistol" type, which deals a series of attacks on the code elements of locks, making the hacking procedure even faster and easier.
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