WASHINGTON, Dec 11 (Reuters) - Senators said Wednesday

at a hearing the United States must do more to address hacking

threats after on Chinese's alleged efforts known as Salt Typhoon

to infiltrate American telecommunications companies and steal

data about U.S. calls.

"This attack likely represents the largest

telecommunications hack in our nation's history," said Senator

Ben Ray Lujan, who chairs a subcommittee on telecom issues.

"There's a lot that we still don't know about the damage that

was done by the salt typhoon hacks, but what we do know is that

more must be done to prevent attacks like this."