Researchers have apparently developed a new low-profile Trojan that runs on the Android OS that can steal data in a very sneaky way that will not trip antivirus software or alert the user to its presence. The malware is known as Soundminer.
"Say your computer at home is compromised and you compromise your Android phone by connecting them. Then, whenever you connect the smartphone to another laptop or computing device I can take over that computer also, and then compromise other computers off that Android. It's a viral type of compromise using the USB cable" Angelos Stavrou