Malware attacks using USB flash drives dropped in offices or public locations like car parks are not uncommon. But researchers at Trustwave Spiderlabs have been investigating a new attack disguised as a gift card. The attack came in the form of a letter that appears to be from retail chain Best Buy offering a $50 gift to loyal customers. With the letter comes a USB drive supposedly containing a list of items to spend the money on. This is where it gets sneaky, the USB device actually contains an Arduino microcontroller programmed to emulate a USB keyboard. Since PCs generally… [Continue Reading] // Read more: original article.