Top telecom executives met with US national security officials Friday as concerns mount over a long-running Chinese cyber-espionage campaign that has targeted some of the most senior US political figures in the country.

Senator Mark Warner, the chairman of the Senate Intelligence Committee, told the Washington Post on Thursday the breach was "worst telecom hack in our nation's history - by far." The White House meeting was hosted by national security adviser Jake Sullivan and Anne Neuberger,

The Chinese government espionage campaign that has deeply penetrated more than a dozen U.S. telecommunications companies is the “worst telecom hack in our nation’s history — by far,” a senior U.S. senator told The Washington Post in an interview this week.

Telecoms hack on US government officials is 'worst in nations history' and 'the barn door is still wide open' says senator

A breach of telecoms companies that the United States said was linked to China was the "worst telecom hack in our nation's history - by far", the chairman of the Senate Intelligence Committee told the Washington Post on Thursday.

Mark Warner, a Democrat from Virginia, spoke with the Washington Post and New York Times this week to warn the public that this is so much worse than we initially thought, dubbing it “the worst telecom hack in our nation’s history.