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If you thought Master Lock had fixed its glaring security flaw from 2020, think again. In a recent video, the LockPickingLawyer revisits the Master ProSeries 6271 Puck Lock to see if the company has addressed a well-documented vulnerability—and the results are disappointing, to say the least.
A Year and a Half Later, No Improvement
Back in November 2020, the LockPickingLawyer posted an urgent security alert (Video #1197) after discovering that multiple Master puck locks could be picked in mere seconds using a comb pick. Expecting that Master Lock would have addressed the issue by now, he recently purchased another lock to test it out. Unfortunately, the problem persists.
Picked Open in Just Seconds
Using the six-pin comb from his Covert Companion, he demonstrates how effortlessly the lock can be opened—twice, just to prove it wasn’t a fluke. By lifting all the pins above the shear line, the lock is rendered useless as a security device. Given that this exploit has been well-known to lock designers since the 1930s, it’s baffling that Master Lock has yet to fix it.
A Security Flaw Worthy of a Recall
For a product marketed as a high-security option, this is a major failure. The fact that such an easily preventable flaw remains in Master Lock’s design after being publicly exposed is concerning. If you’re relying on this lock for security, you may want to reconsider your options.
Watch the Full Video
Want to see the LockPickingLawyer’s demonstration for yourself? Check out the full video here:
Where to Buy (or Avoid) This Lock
If you’re curious about the lock despite its flaws, you can find it on:
Get the Tools Used in the Video
Interested in lockpicking yourself? You can find professional-grade lockpicking tools, including the Covert Companion used in the video, at various online retailers specializing in lockpicking equipment.
While Master Lock may not have fixed their security issue, one thing remains consistent—the LockPickingLawyer’s ability to expose these vulnerabilities with surgical precision. Stay informed, stay secure!
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