NSA chief worries about cyber attack on US infrastructure

San Francisco

US National Security Agency (NSA) chief Michael Rogers warned on Tuesday that hackers will inevitably mount a cyber attack against US infrastructure, similar to the power failure in western Ukraine last year.

"It's only a matter of the when, not the if, you are going to see a nation state, a group or an actor engage in destructive behaviour against critical infrastructure of the United States," admiral Rogers told a cybersecurity conference in San Francisco.