At last week’s Black Hat Conference in Las Vegas, researchers from the firm Aperture Labs demonstrated the ability to hack into the Square payment processing system.
According to an article by Thinq, Adam Laurie and Zac Franken built off Laurie’s 2006 demonstration for reading and modifying mag stripe hotel keys using a computer sound card. The pair modified this application to work with the Square widget, a small piece of hardware that plugs into an iOS or Android device for swiping mag stripes and accepting payments.
Because the Square application looks for an audio format, Laurie and Franken warn that it is vulnerable to criminal tampering, though admittedly, hackers would need a Square merchant account to do so.
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