The FBI has issued a formal warning about a series of cyberattacks on municipal water systems spanning seven states, raising alarms about the vulnerability of critical public infrastructure to foreign-linked threat actors. The agency is actively investigating the incidents and working with local water authorities to assess and mitigate potential damage.

Investigators have reportedly identified hackers with likely ties to Iran as responsible for at least some of the attacks, including intrusions targeting water treatment plants in Minnesota. The suspected Iranian connection has drawn significant attention from national security officials who have long warned about Tehran's interest in disrupting American infrastructure.

The attacks highlight persistent concerns about the cybersecurity posture of municipal utilities, which often operate with limited IT resources and aging industrial control systems. Federal agencies including the EPA and CISA have previously flagged water systems as among the most vulnerable segments of the nation's critical infrastructure.

Authorities have not indicated that any water supplies were contaminated or that public health was directly endangered as a result of the intrusions. Officials are urging water utilities nationwide to review their network security, apply available patches, and report any suspicious activity to federal authorities promptly.