Russian cyber attacks are imminent, says POTUS

Joe Biden released a statement suggesting that Russia is planning an attack on America

(CNN) - President Joe Biden issued an urgent and ominous warning to American individuals and businesses Monday, when he said "evolving intelligence" suggests Russia might be planning cyberattacks against the US.

On Tuesday, an FBI advisory was sent to US companies in the energy, defense and financial sectors, warning of potential prep work for hacking from IP addresses in Russia.

This activity is likely "not about espionage, it's probably very likely about disruptive or destructive (cyber) activity," US Cybersecurity and Infrastructure Security Agency Director Jen Easterly said during a phone briefing with industry executives and state and local government personnel, according to three sources on the call, writes CNN's Sean Lyngaas.

The advisory is part of a growing chorus of warnings that US infrastructure is at risk, writes Lyngass.

"For months, the US departments of Energy, Treasury and Homeland Security, among others, have briefed big electric utilities and banks on Russian hacking capabilities, and urged businesses to lower their thresholds for reporting suspicious activity."