Why Static Proximity Cards Are Dangerous

February 26, 2010

I’m setting up another HID Prox security demonstration.  I’ve cleaned up my equipment so it doesn’t look quite so hacked-together.  I’m working on some long-range antennas and the code to safely support them.  Once it is all working, I hope to be able to…

  • Sniff cards being read across the room by a legitimate reader
  • Flash a room and read card responses
  • Brute-force desired bits on a proximity card

Already I can read a card to capture its number at short-range with a variety of readers.  With the card’s number, I can easily retransmit to a reader.  Basically, the existing system I’ve assembled lets me read your card and use it later at my leisure.

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