Cybercriminals Unleash Bitcoin-Mining Malware

Bitcoins have been around since 2008 but have only began gaining attention in September 2011. This increasing public attention did not go unnoticed by cybercriminals who have began unleashing Bitcoin-mining malware. The term "Bitcoin-mining malware" is used to refer to malware that cybercriminals use to install Bitcoin miners in users' systems. These allow cybercriminals to utilize systems' computing resources for their own gain.

http://about-threats.trendmicro.com/us/webattack/93/Cybercriminals+Unleash+BitcoinMining+Malware