Upon reports that J.P. Morgan and at least four other banks have been victims of a cyber attack, the firm says it's working with law enforcement to determine its scope. A coordinated attack on major banks this month led to the theft of customer data that could be used to take money out of accounts, according to Bloomberg, which cited an individual briefed by U.S. law enforcement. It reports that the FBI is investigating whether Russian hackers attacked the firms in retaliation for sanctions on the country over the Ukraine conflict. J.P. Morgan says as the bank learns more, it will contact anyone it determines may have been impacted by the attack.

More from Video

Video: There Are Some Big Changes Coming to the PGA Championships in 2019

Video: There Are Some Big Changes Coming to the PGA Championships in 2019

3M's Chief Science Advocate on Advancing Healthcare, Autos and Young Scientists

3M's Chief Science Advocate on Advancing Healthcare, Autos and Young Scientists

Listen: Should You Buy Cisco Now?

Listen: Should You Buy Cisco Now?

Video: One-on-One With Pluralsight's CEO Following Its Successful IPO

Video: One-on-One With Pluralsight's CEO Following Its Successful IPO

It's Dumb to Think There Aren't Already Monopolies in Big Tech

It's Dumb to Think There Aren't Already Monopolies in Big Tech