North Korea is now capable of using cyber attacks to disrupt critical U.S. infrastructure, the United States said on Wednesday, reiterating its offer to pay up to five million dollars for information that helps identify DPRK-backed hackers.

The advisory, jointly issued by the U.S. Departments of State, the Treasury, Homeland Security, and the Federal Bureau of Investigation (FBI), warned that Pyongyang's "malicious cyber activities threaten the United States and the broader international community."