Use Your MP3 Player to Steal Credit Card Info

mp3 player credit card skimmer Use Your MP3 Player to Steal Credit Card InfoThiefs are using cheap MP3 players in a credit card scam called “skimming”. The thief installs faux facades on cash machine terminals with a magnetic reader built into it. When you insert your card the magnetic strip gets read twice, once by the machine and once by the electronics in the false card slot. Its rather low tech in that the fake card reader simply records the sound of the magnetic strip on to an MP3 player. That audio data is then retrieved from the player and later deciphered by software. As you can see below each digital 1 and 0 are represented by a long audio wave verses a short one.

If you are unfamiliar with this scam you should read up on it and check out the photos of various skimming devices so you know what to look out for.

[KrebsonSecurtiy via Engadget]

mreader 520x405 Use Your MP3 Player to Steal Credit Card Info


billybob on November 24, 2010 7:38 PM


Copeys on November 24, 2010 9:37 PM

Wow, very interesting read. Skimming has been a Massive problem here in Australia for the last several years, yet I was unaware how the actual device worked. For how bad the actual problem is, it is quite ingenious.

But as long as they don’t know your PIN you should technically be fine. If you see a camera pointed at the machine, and the machine has a funny card input, don’t use it!!

Colb on November 25, 2010 1:52 PM

“User You MP3 Player…”

And in English?

Dave on November 25, 2010 3:57 PM

He has a video of the punks fitting them too.

CptBlackBeard on November 26, 2010 5:35 PM

Thats pretty amazing.

The title needs to be changed to read “Use Your MP3 Player to Steal Credit Card Info”

Martin Sägmüller on November 26, 2010 6:31 PM

Fixed the title. Thanks for noticing.

tmc on November 28, 2010 2:22 PM

The public needs to be educated about what a REAL ATM looks like. There is ABSOLUTELY NO REASON for an ATM card slot to have a reader slot PROTRUDING in front of the acutal relatively flat surfce of the machine. That’s red flag #1. #2, any ATM with a circular (tubular) key lock in front RUN, don’t walk away from, those can be compromised with BUMP keys internally.

madmax on December 13, 2010 4:07 AM

What you can do is to cover your pin always.
Even if they get your card number , they cannot get pin if you cover with your hand.

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