A top White House official says a ninth U.S. telecoms firm has been confirmed to have been hacked as part of a sprawling Chinese espionage campaign that gave officials in Beijing access to private texts and phone conversations of an unknown number of Americans.

As more is learned about the Salt Typhoon breach that it attributed to China, officials are laying the blame on companies that were slow to identify

The White House urged the FCC to force U.S. telecoms to improve security after nine were breached in the "Salt Typhoon" Chinese hacking campaign.