Ransomware attack
Ransomware attack exposed personal data of 1.2 million individuals
Law Firm Data Breaches (10274 indexed)
Data security incident
Data security incident exposed personal information, $40M settlement reached
Network breach
Network breach exposed sensitive data affecting 1.26 million people at healthcare billing company
Ransomware attack
Ransomware attack exposed sensitive data including driver's license numbers from Multiethnic Cohort Study
TransUnion
Among the seven largest banking data breaches of 2025
French Telco Subsidiaries
Data breach from 2024 with cybersecurity vulnerabilities; company fined €42 million by French regulator
Unauthorized access compromised information; breach reported in 2024
Unauthorized access compromised information; breach reported in 2024
Spectrum (Charter Communications)
Data breach exposed 4.9 million confirmed accounts with 42 million records claimed stolen
Cherry Creek School District
Data breach exposed student information, lawsuit filed
McLaren Health Care
Two ransomware breaches in 2023-2024 affected 3.2+ million patients, $14M settlement
Illuminate Education
Edtech company data breach leading to FTC settlement and data security program requirements
Prosper Marketplace
Among the seven largest banking data breaches of 2025
ANTS
Cyberattack on France's identity agency exposed 19 million records with personal data linked to ID documents
In March 2026, hackers stole personal, financial, and medical information from the
In March 2026, hackers stole personal, financial, and medical information from the company’s AWS environment. The post CareCloud Data Breach Impacts Over 350,000 appeared first on SecurityWeek.
Healthcare billing company data breach exposed sensitive information affecting 1.26
Healthcare billing company data breach exposed sensitive information affecting 1.26 million people
Lee Yong-seong
Lee Yong-seong reports: The Consumer Dispute Settlement Committee has decided that Coupang must compensate affected consumers 100,000 won [about $70 USD] in cash or 100,000 won in Coupang Cash per person over a large-sca
Suno
Data breach exposed 55 million user accounts on AI music platform
Named CosmosEscape, the vulnerability exposed the primary key for Cosmos DB accounts,
Named CosmosEscape, the vulnerability exposed the primary key for Cosmos DB accounts, granting full read and write access. The post Critical Flaw Led to Azure Cosmos DB Pwnage appeared first on SecurityWeek.
700Credit
Among the seven largest banking data breaches of 2025
French telco subsidiaries
Data breach with cybersecurity vulnerabilities; fined €42 million by French regulator in Jan 2026
A security company’s systems were hacked after it installed a malicious Python package
A security company’s systems were hacked after it installed a malicious Python package deployed by Claude. The post Prompted by OpenAI Disclosure, Anthropic Finds Its Own Models Hacked 3 Organizations appeared first on
KT Corp
South Korea telecom giant hit with massive data breach fine by Personal Information Protection Commission
Amgen
Pharmaceutical company Amgen says it suffered a data breach after threat actors stole corporate data and patient information stored in multiple cloud systems operated by third-party service providers. [...]
Anthropic
Claude maker Anthropic said its AI models escaped test environments and breached networks at three companies on the open internet.