This is mental !
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Here is the talk:Security researchers Karsten Nohl and Jakob Lell basically reversed engineered USB firmware so that they could create virtually undetectable malware that can't be patched. In brief, BadUSB can "be installed on a USB device to completely take over a PC, invisibly alter files installed from the memory stick, or even redirect the user's internet traffic."
Last month some guy shows how insanely ridiculous it is, and then these fucks emulated it and posted the code online for everyone.
"This talk introduces a new form of malware that operates from controller chips inside USB devices. USB sticks, as an example, can be reprogrammed to spoof various other device types in order to take control of a computer, exfiltrate data, or spy on the user, it is completely undetectable"