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Cyberattack

A collection of 112 issues

Cyberattack Forces Nucor to Halt Operations at Multiple Facilities

Nucor Corporation, the largest steel producer in North America, halted operations at various facilities after detecting a cybersecurity incident involving unauthorized third-party access to its information technology systems. The breach, identified on May 13, 2025, prompted the Charlotte, North Carolina-based company to take several systems offline and activate its incident

Cyber Incident Disrupts Email Services in Liberty Township, Ohio

Liberty Township in Butler County, Ohio, is investigating a cyber incident that disrupted township email systems on May 5. The issue was discovered Monday morning when staff had difficulty accessing email, prompting officials to take steps to minimize operational impacts. Township Administrator Caroline McKinney said the public is encouraged to

New Jersey’s Flemington-Raritan Schools Disrupted by Cyberattack Amid National Surge

A cyberattack on May 6, 2025, disrupted digital operations across the Flemington-Raritan Regional School District in Flemington, New Jersey, forcing a shutdown of computer systems and impacting standardized testing and internal communications. Superintendent Dr. Kari McGann addressed families in a video message on May 7, confirming that in-school device usage

Cyberattack Paralyzes Esse Health Services Across St. Louis Area

In April 2025, Esse Health, one of the largest independent physician groups in the St. Louis, Missouri metropolitan area, suffered a cyberattack that severely disrupted operations across its 45 clinic locations. The incident, which remains unresolved as of May 7, locked access to key network systems, forcing staff to revert

Masimo Cyberattack Halts Production, Sparks FBI Probe

Masimo Corporation reported that a cyberattack on April 27 disrupted its internal IT infrastructure, forcing shutdowns across its manufacturing operations and delaying customer orders. The Irvine, California–based medical device company said the attack targeted its on-premises systems, but its cloud-based hospital data services remain unaffected. In regulatory filings, Masimo

Michigan’s Kalamazoo Schools Disrupted in Latest of Nationwide Cyber Incidents

A network security breach has left Kalamazoo Public Schools (KPS) in Kalamazoo, Michigan, without internet and email access since Wednesday, April 30, 2025. While district officials claim there is "no evidence to suggest it was a targeted attack," such statements downplay the reality that most ransomware operations are

Cyberattack Disrupts Georgia’s Coweta County School System, Classes Continue

The Coweta County School System, based in Newnan, Georgia, and serving the entire county, experienced a cyberattack on its internal network around 7 p.m. on Friday, May 2, 2025. The incident is under investigation by federal, state, and local authorities, including the Georgia Emergency Management Authority and Homeland Security.

Cyberattack Disrupts Bartlesville, Oklahoma Schools, Postpones State Testing

On May 1, 2025, Bartlesville Public Schools in Bartlesville, Oklahoma, suffered a major network security breach that disrupted districtwide computer systems and forced the cancellation of scheduled state testing. Granger Meador, the district’s executive director of technology and communications, confirmed that while essential services such as phones, life safety

Wisconsin’s Iowa County Reacting to Cyber Incident Amid Growing Threats to Local Governments

Iowa County, Wisconsin, is investigating a cybersecurity incident after suspicious activity was detected on its government network on April 28, 2025. In response, county officials immediately took portions of the network offline, citing an abundance of caution. While emergency services—including 911 and law enforcement dispatch—remain fully operational, non-emergency

Hamilton County, Tennessee Sheriff's Office Restores Services After Ransomware Attack

On April 14, 2025, the Hamilton County Sheriff's Office (HCSO) in Chattanooga, Tennessee, suffered a ransomware attack that disrupted multiple public-facing services, including mugshot access, press releases, warrant searches, and the department’s public tip line. In response, HCSO’s Information Technology team quickly shut down the network