How a $10 USB Charger Can Record Your Keystrokes Over the Air
Hardware hacker and security researcher Samy Kamkar has released a slick new device that masquerades as a typical USB wall charger but in fact houses a keylogger capable of recording keystrokes from nearby wireless keyboards.
The device is known as KeySweeper and Kamkar has released the source code and instructions for building one of your own. The components are inexpensive and easily available, and include an Arduino microcontroller, the charger itself and a handful of other bits. When it’s plugged into a wall socket, the KeySweeper will connect to a nearby Microsoft wireless keyboard and passively sniff, decrypt and record all of the keystrokes and send them back to the operator over the Web.
“KeySweeper has the capability to send SMS alerts upon certain keystrokes being typed, e.g. “www.bank.com”. If KeySweeper is removed from AC power, it appears to shut off, however it continues to operate covertly using an internal battery that is automatically recharged upon reconnecting to AC power,” Kamkar said in a post explaining the new device.
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