In June 2025, Northern Light Health announced that one of its third-party vendors, Compumedics, experienced a data security incident between February 15 and March 23. Compumedics provides diagnostic and research technology for sleep disorders and work...
On a Sunday morning in June 2025, the City of Durant, Oklahoma experienced a significant computer network outage, which has been identified as a cyber attack. The Durant Police Department is actively investigating the incident and seeking to identify ...
In late April 2025, Iowa County, Wisconsin, fell victim to a ransomware attack that significantly disrupted key systems related to real estate, land transactions, deeds, and tax processing. The attackers deleted a substantial portion of the county's n...
In May 2025, Arvest Bank disclosed a data breach affecting 7,537 customers. A technical glitch during routine system updates on April 24, 2025, caused some customers to be able to view other customers' personal information. The bank detected and resol...
In May 2025, Arla Foods, a major international dairy producer, confirmed that it was the target of a cyberattack. The attack impacted the company's production unit located in Upahl, Germany, leading to temporary disruptions in operations. As a result,...
In March 2025, Fort Bend County's library system experienced a cyberattack that significantly disrupted its services, leaving residents without internet access and the ability to use library resources. The library system notified users of the attack m...
In August 2025, the University of Western Australia (UWA) experienced a significant data breach, resulting in the compromise of password information for thousands of staff and students. Upon discovering the unauthorized access, the university took imm...
In August 2025, Aspire Rural Health System, a non-profit organization providing coordinated care in Michigan's Thumb region, announced a significant data breach affecting 138,386 individuals, including patients and staff. The breach occurred between N...
On August 16, 2025, electronics manufacturer Data I/O experienced a ransomware attack that significantly disrupted its operations. The company, which provides programming systems for flash memory, microcontrollers, and logic devices used in various in...
In late August 2025, Farmers Insurance disclosed a significant data breach impacting over one million customers. The incident stemmed from unauthorized access to a third-party vendor's database containing Farmers customer information. The breach, whic...
Cyber Security Case Studies has worked with a number of groups to develop these risk effect categories which represent a plain-english description of the impacts seen in public cyber events alongside their definition: