In August of 2020, Warner Music Group (WMG) disclosed that they had suffered a data breach after discovering that an unauthorized third party had gained access to multiple e-commerce websites operated by WMG. The unauthorized access occurred between A...
In October 2026, the global professional services firm PwC became the subject of a significant cyber extortion claim by the Everest ransomware group. The threat actors alleged the theft of approximately 590 gigabytes of data, totaling over 108,000 fil...
In October 2026, Ahold Delhaize, the parent company of Hannaford Supermarkets and several other major grocery chains, initiated a proactive shutdown of its digital infrastructure following the discovery of a network security incident. This precautiona...
Ampath Laboratories, a prominent South African pathology service provider, recently confirmed a significant cybersecurity incident detected on October 2, 2026. The breach was claimed by a threat actor known as ByteToBreach, a group previously associat...
In October 2026, Quest Diagnostics, a prominent leader in the medical laboratory industry, disclosed a significant cybersecurity breach that targeted its internal test results and laboratory service systems. The incident resulted in unauthorized acces...
In October 2026, Ahold Delhaize, the international parent company of prominent grocery chains including Stop & Shop, Hannaford, Food Lion, and Giant Food, fell victim to a significant cybersecurity breach that disrupted digital operations across its N...
Toronto Crime Stoppers and various other Canadian chapters recently suspended all tip-collecting operations following a massive data breach involving their third-party software provider, Navigate360. The breach targeted the P3 tip-management platform,...
The Jefferson County Health Department, a public health agency based in Hillsboro, Missouri, has reached a $2.25 million class action settlement to resolve litigation stemming from a significant data security incident. The breach occurred between Octo...
In October 2026, the State Bank of India, which stands as the largest financial institution in India, officially confirmed a cyberattack that resulted in the exposure of sensitive customer data on the dark web. The breach initially came to light when ...
The Town of Andover, Massachusetts, experienced a significant cyberattack beginning on the evening of August 13, 2026. Although initially described to the public as a temporary internet connectivity issue, town officials took immediate action by hirin...
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: