Atrax, sold for $250, offers a variety of other potent plugins besides its ability to mine and steal virtual currency.
Mystery surrounds a sizable transfer in March between an early bitcoin account and the underground marketplace.
Security vendor McAfee's research arm, McAfee Labs, has identified growth across four threat trends, including Android-based malware, signed malware, spam, and virtual currencies.
Stop wasting your bitcoin on hitmen and fly to space instead. Sir Richard Branson announced Friday customers can now pay for Virgin Galactic spaceflights in bitcoin.
Online gaming company settled civil complaint that it secretly installed bitcoin-mining code on subscribers' computers, netting more than $3,700 worth of virtual currency.
Justice Department officials say virtual currencies like Bitcoin may "have the potential to promote more efficient global commerce" but still associate it with illegal activities.
Bitcoin's street price is surging, and even mainstream PC makers are scrambling to make money off the gold rush.
Authorities arrest one person for alleged illegal weapons sales on the "Black Market Reloaded."
Bitcoin is vulnerable to an attack that could have devastating effects on the virtual currency, but it can be fixed with a software update, according to researchers from Cornell University.
The co-founder of Liberty Reserve, a now defunct virtual currency that was widely favored by the criminal underground, pleaded guilty on Thursday to money laundering and other charges.