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friends and colleagues.
You've probably seen QR tags thousands of times, from advertisements in the subway to coupon flyer in the mail to products in the supermarket. They look like stamp-size bar codes, a grid of small black-and-white rectangles and squares, usually with bigger black squares in the corners.
A marketer's dream-come-true, these tiny images are capable of storing and transmitting loads of data directly to the smartphones of interested customers. When a person scans a QR tag with a smartphone, the tag can do any number of things, including taking the user right to the product's website.
But like any technology, they can also be manipulated to bite the hands — or phones — that feed them. On the mobile security blog Kaotico Neutral, researcher Augusto Pereyra demonstrated how these innocuous QR tags can be made into cybercrime weapons.
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