![]() ![]() We’ve previously seen an illustrated guide to cracking a Master lock, but the online tool makes it much easier and in many fewer tries. Now that the attacker knows the first and last digits and knows the second digit is one of eight possible numbers, the hack is a simple matter of trying each possible combination until the correct one opens the lock. By eliminating the false digit from the Web form, the page will automatically populate the eight possible numbers for the second digit of the combination. By testing which of the possible last digits has more “give,” an attacker can quickly figure out which one is correct. The page responds with the first digit of the combination and two possible digits for the last digit. The video above from Samy Kamar shows how you can crack any Master combination. How can we get a new chart booklet To get a new combination chart booklet, please fill out the Chart Request Form. The two locked positions and the one resistance position are then recorded on a Web page that streamlines the exploit. Forgot your Master lock combo Or want some incentive to not use a Master padlock There’s a website for that. Weve lost the chart booklet that lists the serial numbers and combinations. (An attacker can still turn through it but will physically feel the resistance.) This location represents the resistance location. At some point before a full revolution is completed, the dial will resist being turned. Next, an attacker again lifts the locked shackle, this time with less force, while turning the dial clockwise. The remaining two locations represent locked positions. One of them will be ignored as it is exactly between two whole numbers on the dial. Before the dial reaches 11, there will be three points where the dial will resist being turned anymore. The exploit involves lifting up a locked shackle with one hand while turning the combination dial counterclockwise starting at the number 0 with the other. It’s a bit long, but here’s Ars Technica’s explanation if you don’t want to sit through the video: The video above from Samy Kamar shows how you can crack any Master combination lock within eight tries. Master Lock has no record of the combination.įorgot your Master lock combo? Or want some incentive to not use a Master padlock? There’s a website for that. The dial is the part with numbers that turn. The shackle is the U-molded piece that joins it to an article. Retail packaged combination locks like the 1500D may contain a serial number and date code or date. Method 1: Cracking the Code Source: Acquaint yourself with the lock. With this number available, visit the website of your manufacturer and find out if there is a method for requesting the combination. ![]() Look on the back and bottom of the lock to see if there is a serial number that would identify this lock as being different than another. ![]()
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