Federal officials are calling on telecommunication companies to boost national security by using encrypted messaging apps ...

A top White House official says at least eight U.S. telecom firms and dozens of nations have been impacted by a Chinese ...

"We don't believe any classified communications has been compromised," Deputy national security adviser Anne Neuberger said.

At least eight U.S. telecommunications firms were compromised in the attack, a senior White House official said.

Messaging apps used by Americans are vulnerable as a major cyberattack unfolds, officials from the FBI and the US ...

U.S. officials are urging telecommunication companies to boost network security following a Chinese hacking operation that ...