The US Department of Justice confirmed the issue and charged Denis Gennadievich Kulkov, a citizen of Russia, for being involved in operating a fraudulent credit card checking business that brought in tens of millions of dollars.
The underground service Try2Check, which Kulkov is believed to have founded in 2005, quickly gained enormous popularity among online criminals engaged in the illicit credit card trade and enabled the suspect to earn at least $18 million in bitcoin.
Apparently, Try2Check leveraged the unnamed company’s “preauthorization” service, whereby a business, such as a hotel, requests that the payment processing firm preauthorizes a charge on a customer’s card to confirm that it is valid and has the necessary credit available. Try2Check impersonated a merchant seeking preauthorization in order to extract information about credit card validity.
What Services Did Try2Check Include?
The services were used by individuals dealing with both the bulk purchase and sale of credit card credentials and were required to check the percentage of valid and active credit cards, including dark web markets like Joker’s Stash for card testing.
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