Chinese hackers called Salt Typhoon have infiltrated a ninth telecommunications firm, gaining access to information about millions of people, U.S. cybersecurity officials say.

The Chinese-linked Salt Typhoon cyberespionage operation targeted AT&T's systems, but the wireless carrier's U.S. networks are now secure as it works with law enforcement and government officials, the company said on Saturday in its first acknowledgment of the attacks.

AT&T Inc. acknowledged that it had been hit by the China-linked Salt Typhoon hacking operation but that its networks were now clear from the intrusion.

Newly released pictures show then-Vice President Joe Biden meeting some of his son Hunter Biden’s Chinese business partners during an official visit to the country, as well as Hunter meeting Chinese President Xi Jinping and other senior officials.

President Joe Biden denied meeting with the business partners of his son, Hunter Biden, on several occasions over the past few years. But photos of Hunter Biden and his father meeting with those business partners entered the public eye for the very first time this week,