Nowadays if you have a device that has an On and Off button there is a good chance someone has written some malicious code for it. To try and keep up to date with the bad guys i find the following resources helpful.
Listen to it here www.grc.com
Get the tool here http://fitsec.com/blog/index.php/2011/08/15/tool-release-a-banking-trojan-detection-tool/