36068197 story Time Machines, Computer Memory, and Brute Force Attacks Against Smartcards 49 Posted by Unknown Lamer on Monday August 06, 2012 @09:02PM from the one-too-many-questions dept. An anonymous reader writes "IEEE Spectrum reports on a method that exploits the decaying contents of unpowered computer memory to create an hourglass-like 'time machine' that rate limits brute force attacks against contactless smartcards and RFIDs. The paper takes an odd twist on the 'cold boot' attack reported four years ago at USENIX Security. Not quite as cool as a hot tub time machine though. " Full paper (PDF).