According to a new report from Bloomberg, JPMorgan (JPM) and at least one other bank were attacked by Russian hackers in mid-August, an incident the FBI says took place immediately after the U.S. government levied new sanctions on Moscow.
The report said the attack resulted in theft of gigabytes’ worth of sensitive data and authorities are investigating whether it was linked to similar recent infiltrations of major European banks.
Experts say that while the sophistication of the attack and technical indicators provide some evidence of a government link, the hackers’ ability to move through sophisticated security left enough of a trail to suggest the Russian government wasn’t involved.
In an email to Bloomberg, JPMorgan said: “Companies of our size unfortunately experience cyber attacks nearly every day. We have multiple, layers of defense to counteract any threats and constantly monitor fraud levels.”
The news comes as the risk of outright war between Russia and Ukraine intensifies.
JPMorgan shares are fractionally down in extended hours. The stock has risen $1.10, or 1.90%, this year.