Adamski made the comments to researchers at the Cyberwarcon security conference in Arlington, Virginia. On Thursday, U.S. Senator Mark Warner told the Washington Post that a suspected China-linked hack on U.S. telecommunications firms was “the worst telecom hack in our nation’s history - by far.”

Senator Mark Warner says booting 'Salt Typhoon' hackers could require physically replacing telecommunications equipment.

Leaders of the big telecommunications companies were summoned to the White House to discuss strategies for overhauling the security of the nation’s telecommunications networks amid growing alarm at the scope of a Chinese hack.

T-Mobile, one of America's largest wireless carriers, has confirmed it was compromised in a recent wave of sophisticated cyberattacks targeting U.S. telecom companies.