JPMorgan Chase was among at least five financial institutions recently hacked in coordinated attacks, the USA Today reports.
A federal law enforcement official told USA Today that investigators believe Russian attackers were behind the hacking. Now FBI agents are trying to determine whether the attacks were related to U.S. sanctions against the Russian government.
The banks lost sensitive data in the attacks.
Companies “of our size unfortunately experience cyberattacks nearly every day,” JPMorgan spokeswoman Trish Wexler said in a statement without confirming the reports. “We have multiple layers of defense to counteract any threats and constantly monitor fraud levels.”
FBI spokesman Paul Bresson said the bureau is “working with the United States Secret Service to determine the scope of recently reported cyber attacks against several American financial institutions.”