A California city pulled the plug on its entire computer network after a cyberattack knocked out key systems, including 911 routing and police and fire dispatch. Suisun City declared a state of emergency Saturday after malicious software breached its IT systems at about 5:45 a.

Add Yahoo as a preferred source to see more of our stories on Google. FILE PHOTO: Iran-linked hackers breach FBI director's personal email, publish excerpts online May 26 (Reuters) - Iranian hackers were responsible for a disruptive computer breach in ...

US officials suspect Iranian hackers are behind a series of breaches of systems that monitor the amount of fuel in storage tanks serving gas stations in multiple states, according to multiple sources briefed on the activity. The hackers responsible have ...

Investigators are probing whether Iranian hackers are behind this week's malicious cyber activity against water systems in Minnesota. If they are found to be the culprits, it would not be the first time.

A coordinated cyberattack disrupted automated controls at more than 30 Minnesota water systems this week. Officials say drinking water stayed safe.

This latest cyber assessment released during the war with Iran mirrors similar cyber intrusions made by an Iran-aligned group that targeted Pennsylvania water systems in late 2023. International Critical Infrastructure Cyber Threats Iran-aligned hackers ...

For nearly two years, researcher Vangelis Stykas has maintained access to North Korean hackers’ servers. His work shows they pulled off intrusions in a shocking number of systems across the globe.

Iran-aligned hackers have exploited and disrupted operational technology control systems embedded in U.S. critical infrastructure, according to a federal advisory issued Tuesday. “The authoring agencies assess a group of Iranian-affiliated advanced ...