US Government Agency (CISA)
Unnamed US agency breached through Cisco vulnerability; FIRESTARTER backdoor allowed access through March 2026
2026 Data Breaches Year-to-Date (3100 indexed)
UK BioBank / Alibaba
500,000 Britons' private health records offered for sale on Chinese website; de-identified data advertised
Cognizant
Data breach occurring April 21, 2026 affecting customers with personal information exposed
Intesa Sanpaolo S.p.A.
Employee unlawfully accessed customer data over two years; insider threat breach
ANTS
Major cyberattack on France's identity agency exposed 19 million personal records
CISA (US Agency)
Breached through Cisco vulnerability, FIRESTARTER backdoor allowed access through March
Unnamed U.S. Department (CISA)
Breached through Cisco vulnerability; FIRESTARTER backdoor allowed unauthorized access through March
Huntsville Hospital Health System
Third-party data breach compromised patient information
FirstClass
Australian travel agency customer records compromised; threat actor claimed data on underground hacking forums
Ryanair
Breach claimed on hacker forums, exposing legal emails, flight data, and banking details
UK BioBank
Confidential health records from 500k Britons exposed and offered for sale on Chinese website
Ryanair
Breach exposed legal emails, flight data, and banking details; data claimed on hacker forums
SUCCESS
253,510 records exposed — Device information, Email addresses, IP addresses, Names and 4 more
Nissan
Data breach involving information held by third-party vendor
Mexican Government Agencies
Single hacker compromised 9 government agencies using Claude Code and OpenAI tools
ShinyHunters
ShinyHunters breached Rockstar Games via Snowflake; 165 organizations affected in supply chain attack
Legend Senior Care
Senior care provider affected by ransomware attack exposing patient data
Rockstar Games
Breach through compromised Anodot Snowflake access by ShinyHunters group; 165 organizations affected in cascading attack.
River Financial Corporation
Ransomware attack with data stolen; hackers confirmed data deletion
Paidwork
22 million user records exposed including emails, passwords, and banking data
Cognizant
Data breach on April 21, 2026 exposing personal information of customers
Fidelity Brokerage Services
Data breach resulting in $1.25M regulatory fine
UK Biobank
Confidential health records exposed online and advertised for sale on Chinese website
France ANTS
Major cyberattack on national identity agency exposed 19 million records with personal data