The Zeus trojan [kit] has been HUGE in the past and is probably the favorite crimeware toolkit for those looking to break into the biz. It’s targetd Android devices for some time and now, apparently, is targeting Blackberry devices. Blackberry users beware.
http://www.v3.co.uk/v3-uk/news/2197291/mobile-zeus-malware-found-targeting-blackberry-devices