In late 2021, Lakeview Loan Servicing, a large mortgage servicing company, experienced a cyberattack that compromised the personal data of roughly 2.5 million borrowers. The attack compromised sensitive information, including Social Security numbers. ...
In February 2026, Dutch telecommunications provider Odido suffered a cyberattack that compromised the personal data of approximately 6.2 million customers, including those of its subsidiary Ben. The breach occurred within a customer contact system, gr...
In March 2026, Insight Hospital and Medical Center in Chicago announced a data security incident that occurred in September 2025. The hospital identified unusual activity within its network and a subsequent investigation revealed that unauthorized acc...
In March 2026, Deaconess Health System, a healthcare network operating in Indiana, Kentucky, and Illinois, announced a data breach affecting an undisclosed number of patients. The breach stemmed from a security incident involving MediCopy, a third-par...
In January 2026, Hightower Holding, LLC, a financial services firm, experienced a significant data breach that compromised the personal information of 131,483 individuals. The breach stemmed from unauthorized access to Hightower's network through comp...
In March 2026, Hargreaves Lansdown, a major UK financial services company managing investments for two million people, experienced technical issues that disrupted access to its website and mobile app. Thousands of clients reported problems logging in ...
In March 2026, the Ukrainian news website MykVisti experienced a cyber-attack that caused instability and slower loading times. According to Director Oleh Dereniuha, the website experienced atypical technical activity, leading to suspicions of a digit...
Eye Physicians of Central Florida has reached a settlement to resolve a class action lawsuit stemming from a data breach that occurred in November 2023. The breach compromised the personal information of patients, including names, addresses, dates of ...
In March 2026, Charlottesville Settlement Company (CSC), a title and settlement agency, announced a cybersecurity incident that compromised the personal information of over 22,000 individuals. An unauthorized person gained access to CSC's network and ...
In March 2026, Strauss Borrelli PLLC announced an investigation into a data breach affecting Capital Star Oil & Gas, Inc., a Texas-based oil and gas company founded in 2002. Capital Star, which focuses on oil and gas exploration and production in Sout...
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: