Data breaches in the week of 5–11 October 2026

The largest

1. Danish Central Person Register (CPR) 8,800,000 people Denmark
2. Angel One 6,765,054 accounts India
3. Ricardo 890,000 accounts Switzerland
4. Neogen 435,963 accounts United States
5. CyrusOne 373,460 accounts United States
6. Double Counter 274,922 accounts France

Every breach this week, by country

United States 43

• Neogen 9 October 2026 · 435,963 accounts
• CyrusOne 7 October 2026 · 373,460 accounts
• Blueberry Pediatrics 10 October 2026 · 340,915 Oregon residents
• Cognitive Health Technologies LLC 8 October 2026 · 49,467 patients
• Hood River Dental 8 October 2026 · 16,609 Oregon residents
• Secure Healthcare Information Management, LLC 6 October 2026 · 6,810 patients
• Hattiesburg Eye Clinic, P.A. 5 October 2026 · 6,137 patients
• Cleburne Independent School District 6 October 2026 · 3,187 Texas residents
• Anup K. Deol, OD PS d/b/a Eye Care Center of Snohomish 8 October 2026 · 3,059 patients
• Edgewood ISD 6 October 2026 · 3,000 Texas residents
• The Speech Clinic, LLC 7 October 2026 · 2,168 patients
• Flowco Holdings Inc. 6 October 2026 · 1,771 Texas residents
• Harman Fitness 6 October 2026 · 1,057 Texas residents
• Nabi Health, Inc. 6 October 2026 · 783 patients
• AllCare Health, Inc. 8 October 2026 · 782 Oregon residents
• Gary Gotthelf, MD and Associates 5 October 2026 · 685 patients
• Capitol Pain Institute 6 October 2026 · 666 Texas residents
• Franklin/Fulton Mental Health/Intellectual & Developmental Disabilities/Early Intervention 5 October 2026 · 640 patients
• zizzl, llc 9 October 2026 · 496 Texas residents
• Squire Patton Boggs (US) LLP 8 October 2026 · 335 Texas residents
• PeaceHealth Sacred Heart Medical Center 7 October 2026 · 334 Oregon residents
• National Life Insurance Company 8 October 2026 · 172 Vermont residents
• Evan Chadwick 9 October 2026 · 50 Vermont residents
• Sawyer Savings Bank 9 October 2026 · 25 Vermont residents
• Advantest America, Inc. 5 October 2026 · 8 Vermont residents
• Wayne-Finger Lakes BOCES 10 October 2026 · 7 Vermont residents
• Covercraft Industries, LLC 5 October 2026 · 4 Vermont residents
• Home, Hope and Healing, Inc. 8 October 2026 · 3 Vermont residents
• Allied Physicians Group, PLLC 8 October 2026 · 3 Vermont residents
• Arthur J. Jerry 6 October 2026 · 3 Vermont residents
• Penquis CAP 6 October 2026 · 3 Vermont residents
• Ant Farm II, LLC 8 October 2026 · 2 Vermont residents
• Access Residential Management 5 October 2026 · 2 Vermont residents
• Martin, Magnuson, McCarthy & Kenney 9 October 2026 · 1 Vermont residents
• Holland & Knight, LLP 8 October 2026 · 1 Vermont residents
• Citizens & Northern Bank 8 October 2026 · 1 Vermont residents
• Winona County 8 October 2026 · 1 Vermont residents
• Factory Five Racing, Inc. 7 October 2026 · 1 Vermont residents
• Marking Services, Inc. 7 October 2026 · 1 Vermont residents
• Hasbro, Inc. 7 October 2026 · 1 Vermont residents
• North Slope Borough School District 5 October 2026 · 1 Vermont residents
• Alisal Union Schol District 7 October 2026
• Healthcare Highways, LLC 6 October 2026

Denmark 1

• Danish Central Person Register (CPR) 5 October 2026 · 8,800,000 people

India 1

• Angel One 7 October 2026 · 6,765,054 accounts

Switzerland 1

• Ricardo reported 11 October 2026 · 890,000 accounts

France 1

• Double Counter 7 October 2026 · 274,922 accounts

Netherlands 1

• TUI reported 11 October 2026

Ransomware claims

Gangs named 264 organisations on their leak sites this week, against 232 the week before. A claim is the gang’s word, not a confirmed breach.

• The Gentlemen 38 claims
• Qilin 23 claims
• NightSpire 22 claims
• Majinahanashi 19 claims
• N0n 18 claims
• SafePay 12 claims