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US authorities have closed the popular cybercrime service Try2Check and charged a Russian citizen suspected of creating this service.

Try2Check was shut down on May 3 in a joint operation between the US government and partners in Germany, Austria and France.

Denis Kulkov, a 43-year-old Russian resident, owns and operates Try2Check, a web-based platform that allows cybercriminals to check whether stolen credit card data is valid at the time of verification or not.

Kulkov created the service in 2005 and earned at least $18 million from it, which he used to buy a Ferrari car and other luxury items.

In addition, the service helped attackers sell stolen data to other scammers at a higher price. Try2Check charged 20 cents for card verification.

According to the prosecutor's office, systems of a well-known American payment processing company, whose name police did not disclose, were used to verify the card data.

According to the indictment, Try2Check was one of the most popular card verification platforms among cybercriminals, processing more than a million transactions per month.

The US State Department has announced a reward of up to $10 million to anyone who provides information leading to the arrest or conviction of Kulkov. The USA is also offering a separate reward ( of up to $1 million for information , which will help identify other key leaders in the Try2Check platform.

Although the U.S. Attorney's Office for the Eastern District of New York has issued an arrest warrant for Kulkov, charging him with unauthorized access device fraud, computer intrusion and money laundering, it is unlikely that Kulkov will be apprehended unless he travels outside of Russia.