A cyberattack on the city of St. Paul, Minnesota, detected on Friday, July 25, 2025, prompted Governor Tim Walz to activate the National Guard on Tuesday to assist in the response. The attack, described by Mayor Melvin Carter as a coordinated and sophisticated intrusion by an external actor, led the city to shut down most of its computer systems as a precaution.

While emergency services remained operational, services like library systems and online payments were disrupted. Officials have not confirmed whether sensitive data was stolen or if a ransom was demanded. The FBI, state agencies, and cybersecurity firms are investigating.

Governor Walz said the incident was beyond local and commercial response capabilities. This event follows a rise in ransomware attacks on U.S. cities, including recent incidents in Texas, Oklahoma, and Puerto Rico, and reflects growing national concern over state-sponsored cyber threats, including those linked to Iran.