Salt Typhoon

Chinese state-sponsored hackers compromised nine major US telecommunications carriers throughout 2024, accessing wiretap systems, call metadata for over a million users, and communications of presidential campaign staff.

The Salt Typhoon campaign by Chinese state-sponsored actors compromised major US telecom providers including AT&T, Verizon, and T-Mobile, accessing lawful intercept systems and call metadata in what officials called the worst telecom hack in US history.