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DEF CON 30 - Miana E Windall, Micsen - Digital Skeleton Keys
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⬐ muffeIt turns out, offline access control systems with no central server are a very bad idea. Not only does this attack open any SmartAir lock in literally seconds, it leaves very little information behind on the lock. For instance, if you try to retrieve the log, it won't even show that the door was opened at the time of the attack, as the attack uses an invalid user ID that the lock happily accepts but the log blocks. Fantastic!⬐ nullish_signalWew, good thing the log is secured from invalid user IDs