White House warns U.S. companies about 'preparatory' Russian hacking -senior official

FILE PHOTO: A general view of the White House in Washington, U.S., October 2, 2021. REUTERS/Al Drago/File Photo

(Reuters) - Senior White House cybersecurity official Anne Neuberger said on Monday that important U.S. companies that provide critical infrastructure should improve their cyber defensive posture because of ongoing digital threats from Russia.

Neuberger said the U.S. government has seen "preparatory" Russian hacking activity aimed at numerous U.S. companies, but it has "no certainty" such an attack will occur.