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In 2010, 25 percent of new worms have been specifically designed to spread through USB storage devices connected to computers, according to PandaLabs. These types of threats can copy themselves to any device capable of storing information such as cell phones, external hard drives, DVDs, flash memories and MP3/4 players.

This distribution technique is highly effective. With survey responses from more than 10,470 companies across 20 countries, it was revealed that approximately 48 percent of SMBs (with up to 1,000 computers) admit to having been infected by some type of malware over the last year. As further proof, 27 percent confirmed that the source of the infection was a USB device connected to a computer.

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