AT&T and Verizon confirmed on Saturday that their systems were targeted by Salt Typhoon, a Chinese-linked cyberespionage operation, but assured the public that their U.S. networks are now secure. Both companies are collaborating with law enforcement and government agencies to assess and mitigate any remaining risks.
An AT&T spokesperson stated, “We detect no activity by nation-state actors in our networks at this time.” They added that the People’s Republic of China targeted a small group of individuals with foreign intelligence value. While only limited information was compromised, AT&T continues to monitor and remediate its networks to safeguard customer data.
Verizon, in its statement, reported similar containment efforts. Chief Legal Officer Craig Silliman said, “We have not detected threat actor activity in Verizon’s network for some time, and after considerable work addressing this incident, we can report that Verizon has contained the activities associated with this particular incident.” The containment has been independently verified by a respected cybersecurity firm.
The U.S. Department of Defense and Federal Communications Commission have not commented on the incident. However, on Friday, officials added a ninth unnamed telecom company to the list of victims. Hackers affiliated with Salt Typhoon allegedly gained extensive access to telecom networks, enabling them to geolocate millions of individuals and intercept phone calls at will.
Chinese officials have dismissed such allegations as disinformation, maintaining that Beijing opposes cyberattacks in all forms. Previous reports linked the Salt Typhoon operation to theft of telephone audio intercepts and call record data from companies like AT&T, Verizon, and Lumen.
The U.S. Cybersecurity and Infrastructure Security Agency (CISA) responded to the breach on Dec. 18 by recommending that senior government and political figures transition to end-to-end encrypted communication apps. High-profile targets of Salt Typhoon reportedly included individuals associated with Vice President Kamala Harris and former President Donald Trump’s campaigns.
Lawmakers expressed bipartisan concern over the severity of the breach. Senator Ben Ray Luján (D-NM) described it as “the largest telecommunications hack in our nation’s history,” while Senator Ted Cruz (R-TX) emphasized the urgent need to address vulnerabilities in the nation’s communications networks.
The Salt Typhoon hack has raised alarm over the scale and impact of Chinese cyberattacks on U.S. telecommunications. Both companies and government agencies face mounting pressure to assure the public about the security of the nation’s critical communication infrastructure.