A suspected Russian hacker who was allegedly part of “the largest theft of customer data” from an American financial institution was extradited from Georgia to the U.S. and will appear in court Friday, federal prosecutors said. Andrei Tyurin, also known as Andrei Tiurin, was involved in a black-hat campaign that attacked U.S. finance firms and brokerages, as well as a financial-news company, the Manhattan U.S. Attorney’s Office said. “These hacks included the largest theft of customer data from a U.S. financial institution in history,” the office said in a statement. Manhattan U.S. Attorney Geoffrey Berman said, “Tyurin’s alleged hacking activities were so prolific, they lay claim to the largest theft of U.S. customer data from a single financial institution in history, accounting for a staggering 80 million-plus victims.” Tyurin faces a litany of charges, such as hacking, wire fraud, and aggravated identity theft. His lawyer did not immediately respond to a request for comment. Prosecutors have not named the victims, but the allegations against Tyurin closely mirror information surrounding the 2014 hack of JPMorgan.