U.S. investigators suspect China-linked hackers in a cyber intrusion targeting an FBI computer network containing information related to domestic surveillance orders, according to a report by The Wall Street Journal.

U.S. Investigates Cyber Intrusion Into FBI Network

United States investigators suspect that hackers affiliated with the Chinese government may be responsible for a cyber intrusion into an internal computer network of the .

According to a report by , the targeted system reportedly stores information connected to certain domestic surveillance orders handled by the FBI.

However, officials say the full scope and severity of the breach remain unclear as investigations are still in the early stages.

Suspicious Network Activity Detected

The FBI reportedly began investigating the incident after detecting unusual log activity within the affected system on February 17, 2026.

A notification sent by the agency to the U.S. Congress indicated that the intrusion targeted an unclassified system containing information related to communications of individuals under FBI investigation.

Despite the system being unclassified, the data involved could still hold sensitive investigative information.

The FBI described the hacking techniques used in the intrusion as “sophisticated.”

Multiple U.S. Agencies Join Investigation

The cyber incident has prompted a broader national security investigation involving several key government agencies.

These include:
The White House
The National Security Agency
The Cybersecurity and Infrastructure Security Agency
The Federal Bureau of Investigation

A White House official confirmed that federal authorities routinely hold meetings to assess cyber threats against the United States but declined to comment on specific incidents.

China Yet to Respond

As of the time of the report, the Chinese embassy in Washington had not responded to requests for comment regarding the allegations.

The FBI has also declined to publicly comment on details of the investigation while forensic analysis and remediation work continue.

Growing Concerns Over Cybersecurity

The suspected breach highlights ongoing tensions between the United States and China over cybersecurity and alleged state-sponsored hacking activities.

Cybersecurity experts have repeatedly warned that government systems, even those not classified, can provide valuable intelligence if compromised.

U.S. authorities say investigations will continue until the origin and impact of the intrusion are fully determined.