The breach, traced to Chinese state-sponsored hackers, may have lasted for months, according to The Wall Street Journal.

Chinese hackers were in networks of major ISPs “for months,” WSJ reports.

AT&T and Verizon were allegedly hacked by the Chinese hacking group, Salt Typhoon, compromising sensitive network infrastructure.

Multiple U.S. broadband providers, including Verizon, AT&T, and Lumen Technologies, have been breached by a Chinese hacking group tracked as Salt Typhoon, the Wall Street Journal reports.

The intrusion affected major telecom company networks that cooperate with court-authorized U.S. requests for communications data, according to a recent report.

The Wiretap is your weekly digest of cybersecurity, internet privacy and surveillance news. To get it in your inbox, subscribe here. Multiple telecoms giants have been hacked by a Chinese government cyber espionage unit commonly referred to as Salt Typhoon,

Chinese hackers accessed the networks of U.S. broadband providers and obtained information from systems the federal government uses for court-authorized wiretapping, the Wall Street Journal reported on Saturday.

Hackers tied to the Chinese government compromised the law enforcement wiretap network of U.S. telecom companies, and security analysts aren't sure how bad it is yet.