Cheapo flash drives, often sold on eBay carry a strong risk of being counterfeit, often with hacked firmware to allow a low-capacity stick report as high. But a new malware may now make such devices a PC security risk
This malware bypasses protections and the USB device is picked up as a keyboard instead, and quickly executes its code. I get the strong feeling that buying cheap USB flash drives online may be a worse idea than before. If a malicious person were inclined, they could load up a few hundred flash drives with this, sell them cheap on eBay and cause severe damage.
If you are a member of Yo Joe, Joe Customs or One Sixth Warrior, you are no friend of mine. I don't much care for /toy/, either.