A Russian man faces as much as 10 years in jail for spreading a pc virus that value victims greater than $500m (£401m).
Mark Vartanyan, 29, developed and distributed the Citadel Trojan, which lets criminals steal checking account particulars and maintain information to ransom.
US prosecutors stated it had contaminated about 11 million computer systems worldwide.
He pleaded guilty to at least one depend of laptop fraud, in a court docket in Atlanta, after being extradited from Norway.
Launched in 2011, Citadel was marketed on invitation-only, Russian-language web boards utilized by cybercriminals.
Its customers had focused the pc networks of main monetary and authorities establishments around the globe, prosecutors stated.
Vartanyan admitted to the “growth, enchancment, upkeep and distribution” of Citadel between 2012 and 2014 whereas residing in Ukraine and Norway.
Working below the alias Kolypto, he uploaded “numerous electronic files” that consisted of Citadel malware, elements, updates and patches, in addition to buyer data.
Earlier in March, David LeValley, particular agent on the FBI Atlanta Workplace, stated Vartanyan’s arrest eliminated “a major participant” from the assets obtainable to cybercriminals.
“We should proceed to impose actual prices on criminals who consider they’re protected by geographic boundaries and might prey on the American folks,” he stated.
Vartanyan agreed to cooperate with prosecutors in trade for a decreased jail time period. He shall be sentenced in June.
In September 2015, a US court docket sentenced Russian citizen Dimitry Belorossov to 4 years and 6 months in jail after he admitted distributing and putting in Citadel on to computer systems.
The Division of Justice stated its investigation into the creator of Citadel continued.