A U.S. District Court judge in Atlanta last week handed a five year prison sentence to Mark Vartanyan, a Russian hacker who helped develop and sell the once infamous and widespread Citadel banking trojan. This fact has been reported by countless media outlets, but far less well known is the fascinating backstory about how Vartanyan got caught.
For several years, Citadel ruled the malware scene for criminals engaged in stealing online banking passwords and emptying bank accounts. U.S. prosecutors say Citadel infected more than 11 million computers worldwide, causing financial losses of at least a half billion dollars.
Like most complex banking trojans, Citadel was marketed and sold in secluded, underground cybercrime markets. Often the most time-consuming and costly aspect of malware sales and development is helping customers with any tech support problems they may have in using the crimeware.
In light of that, one innovation that Citadel brought to the table was to crowdsource some of this support work, easing the burden on the malware’s developers and freeing them up to spend more time improving their creations and adding new features.