Hackers linked to the Chinese government have reportedly breached several U.S. internet service providers, according to The Wall Street Journal. Investigators are calling the cyberattack "Salt Typhoon," which occurred just a week after the FBI dismantled another China-backed operation called "Flax Typhoon." That attack targeted 200,000 internet-connected devices such as cameras and routers.

In the Salt Typhoon incident, hackers infiltrated broadband networks to access sensitive information held by internet service providers. Sources close to the matter told WSJ that unlike past attacks focused on disrupting infrastructure, this one seems to be aimed at gathering intelligence. FBI Director Christopher Wray had warned at the Aspen Cyber Summit that China would persist in targeting U.S. organizations and critical infrastructure, either directly or through proxies.

Chinese cyberattacks have been ongoing, but their complexity and precision have escalated, intelligence officials told the WSJ. Earlier this year, Wray described China's hacking program as the largest in the world, surpassing all other major nations combined.

China has denied involvement in these attacks. Liu Pengyu, spokesperson for the Chinese embassy in Washington, accused U.S. intelligence agencies of fabricating evidence linking China to the Salt Typhoon breach.

The WSJ report revealed that investigators are focusing on Cisco Systems routers, though a Cisco spokesperson said there is no evidence of their involvement. Microsoft is also looking into the attack. Lumen Technologies, the parent company of CenturyLink and Quantum Fiber, recently detected malware in routers that could expose customers' passwords but did not specify which ISPs were affected.

Although there's no indication that individual customers’ data was the target, you can take basic precautions: