A simple picture of the key is enough to make a copy, but there are also key copying apps that can do all the work for you. This makes gaining access to your home or business that much easier for crooks and thieves.
On top of that Mul-T-Lock keys can only be made by authorized dealers. Tired of having to carry a ring full of keys with you everywhere you go? Mul-T-Lock has the perfect locking system for you then. Not only do they offer the highest quality locks, but they allow you to open several locks with just one key. Because Mul T Locks are more secure and durable than traditional locks, they look a bit different than other lock and key systems. For starters, the key for a Mul T Lock is much different than a traditional key.
Where traditional keys stand vertically and have cuts that look like peaks and valleys, Mul T Locks are drastically different. I am starting this page so that readers can follow along as I attempt to compromise the Mul-T-Lock cylinder by design. The goal is to find fundamental flaws or even benign details that would allow an attacker to gain a foothold. The purpose of this project is not to pick an MTL; a lot of folks have done this already. The reason that I'm posting this is to give other hobbyists an idea of the process that may go into analyzing a high-security cylinder.
I will minimize the amount of editing and revisions made to this page so that the reader can get some insight into the methodology rather than the results.
It is not clear if I will be successful, but I encourage you folks to email me and share your thoughts. Of course, any ideas presented will likely be posted here with credit unless otherwise specified. Hopefully, this page will also provide motivation for me to push on through frustrating times and challenges as they come. It is important to examine what others have done with this cylinder; it will not only provide a guide for possible attack vectors but also motivation.
Firstly, Mul-T-Lock is not pick-proof by any means. Every cylinder they've produced, with the exception of the new MT5, has been opened by many people. The tool appears to have gone through several revisions to account for new keyways.
Based upon my own limited experience with it, the tool requires very precise calibration to be effective but otherwise is a quite solid solution. Questions have been raised about whether it can effectively handle the newer serrated outer drivers that MTL has made standard across their line as far as I can tell.
Eric found a very clever pin overlifting exploit that allowed for the defeat of the outer pin stacks. The vulnerability was in the shape of the outer drivers and their mechanical relationship to the inner drivers.
Michaud discovered that when the inner key pins were lifted and thus the inner drivers far enough, it caused the outer driver pins to "lift off" the outer key pins. This creates a massive shearline gap that is independent of the actual bitting.
If MTL used completely indendent outer and inner pin stacks, this vulnerability would not exist. They responded to Michaud's exploit by drilling a hole in the top of the outer drivers and allowing a small post protruding from the inner drivers to pass through it. Finally, we will discuss skilled picking attempts against Mul-T-Lock cylinders. These cylinders have been successfully picked open with both standard picking tools and also specialty picks designed for MTL.
Multiple videos of these openings can be found on YouTube and because some have been verified, their authenticty is not usually argued. The successful techniques used include both single-pin picking and raking. There have also been unconfirmed reports of successful bumpings of these cylinders. There is no doubt that these locks are difficult to pick, but they are far from pick-proof.
MTL uses a very unique telescopic pin arrangement to improve key control and pick resistance. The idea of pin stacks inside pin stacks is the heart of Mul-T-Lock's design. Give us a call today and sleep safer tonight!
Mul-T-Lock cylinders and deadbolts offer the best protection on the market. They are forged with strong materials including hardened steel and use patented technology to offer the best resistance to attempts of picking, drilling, and prying.
Sleep soundly knowing no one is coming in that door without a key! Traditional locks are easily defeated, some can even be bypassed with just a screwdriver or even a credit card. The Mul-T-Lock Hercular deadbolt is simply the best deadbolt on the market today, having matched or exceeded the toughest industry tests.
However, please allow up to 21 working days from day of dispatch. We know you want your picks immediately. We routinely sell quality lock picks at hugely reduced prices and in great quantities. We sometimes even whip our staff to keep them working all through the night.
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