Breaches & incidents
The victims' side of the threat pictureWho is being attacked
Data breaches and cyber incidents made public — reported to regulators, disclosed by the companies themselves, or catalogued after a leak. Who was hit, when, how, and how many people or accounts were affected.
- Incidents disclosed
- 618
- last 12 months, every source
- People in US health breaches
- 70.5M
- 477 breaches reported to HHS
- Material incidents, US listed firms
- 23
- SEC 8-K Item 1.05, 12 months
- Accounts in new breach records
- 522.5M
- 126 breaches added to HIBP
Coverage. Mostly the United States: the cleanest public records of named victims come from US regulators. Ransomware victims worldwide, India included, are on the ransomware victims page. Every count is a lower bound — only disclosed incidents appear.
1Key findings
- Most common attackHacking / intrusion78% of named-victim incidents in the last 24 months
- Most targeted sectorHealthcare754 incidents in the last 24 months
- Most people affectedConduent Business Services LLC62.2M people · 8 Oct 2025
- Most accounts exposed1win96.2M accounts · 2 Nov 2024
- Named most oftenFieldtex Products, Inc.in 5 disclosures, 20 Nov 2025 – 12 Dec 2025
- Latest disclosurePark Dental Partners, Inc.Hacking / intrusion · 7 Oct 2026 · SEC 8-K
2Trends
The last 24 months, dated when the incident happened where the source says, otherwise when it was reported.
- Hacking / intrusion797
- Data breach (cause not stated)151
- Unauthorised access or disclosure62
- Ransomware9
- Infostealer logs5
- Credential compilation (no single victim)5
- Theft or loss4
- Error / misconfiguration1
- Hacking / intrusion797
- Data breach (cause not stated)151
- Unauthorised access or disclosure62
- Ransomware9
- Infostealer logs5
- Credential compilation (no single victim)5
- Theft or loss4
- Error / misconfiguration1
- Hacking / intrusion797
- Data breach (cause not stated)151
- Unauthorised access or disclosure62
- Ransomware9
- Infostealer logs5
- Credential compilation (no single victim)5
- Theft or loss4
- Error / misconfiguration1
- Hacking / intrusion77%
- Data breach (cause not stated)15%
- Unauthorised access or disclosure6%
- Ransomware1%
- Infostealer logs0%
- Credential compilation (no single victim)0%
- Theft or loss0%
- Error / misconfiguration0%
3Sectors
Who the incidents hit, where the source names a sector, and how each sector was attacked.
- In healthcare, 91% of incidents were hacking / intrusion.
| Hacking / intrusion | Data breach (cause not stated) | Unauthorised access or disclosure | Ransomware | Theft or loss | Error / misconfiguration | |
|---|---|---|---|---|---|---|
| Healthcare | 685 | 62 | 2 | 4 | 1 | |
| Information | 25 | 3 | ||||
| Manufacturing | 20 | 1 | ||||
| Professional Services | 18 | 1 | ||||
| Retail | 17 | 1 | ||||
| Finance, Insurance & Real Estate | 6 | |||||
| Services | 5 | |||||
| Transportation | 4 |
4Largest incidents
The last 24 months. People and accounts are counted apart: an account list can hold one person many times. Credential compilations, which name no victim, are left out.
- 1Conduent Business Services LLC62.2M people
- 2DentaQuest, LLC15.0M people
- 3Aflac Incorporated (“Aflac”)13.9M people
- 4Aesto, LLC9.5M people
- 5Episource, LLC6.7M people
- 6AdaptHealth, LLC4.1M people
- 7Unlimited Technology Systems, LLC3.8M people
- 8CareCloud, Inc.3.8M people
- 11win96.2M accounts
- 2Under Armour72.7M accounts
- 3Suno55.3M accounts
- 4Canadian Tire38.3M accounts
- 5Addi34.5M accounts
- 6SoundCloud29.8M accounts
- 7Speedio27.5M accounts
- 8Paidwork23.3M accounts
5Hit more than once
Organisations named in more than one disclosure in the last 5 years (30 in all). That can be separate attacks, or one incident reported to more than one place — a regulator and investors, or on behalf of several clients.
| Organisation | Disclosures | First – latest | Types of attack | Sources |
|---|---|---|---|---|
| Fieldtex Products, Inc. · Healthcare | 5 | 20 Nov 2025 – 12 Dec 2025 | Hacking / intrusion | HHS |
| AltaMed Health Services Corporation · Healthcare | 3 | 1 Jun 2023 – 26 Feb 2026 | Hacking / intrusionRansomwareUnauthorised access or disclosure | HHS, VCDB |
| United Healthcare Student Resources · Finance & Insurance | 3 | 1 Jun 2023 – 1 Jun 2023 | Ransomware | VCDB |
| DentaQuest, LLC · Healthcare | 2 | 23 May 2026 – 16 Jul 2026 | Data breach (cause not stated)Hacking / intrusion | HHS, HIBP |
| CarMax · Retail | 2 | 2 May 2025 – 24 Jan 2026 | Data breach (cause not stated)Hacking / intrusion | HIBP, VCDB |
| Park Dental Partners, Inc. · Healthcare | 2 | 28 Aug 2026 – 7 Oct 2026 | Hacking / intrusion | SEC 8-K |
| WindRose Health Network · Healthcare | 2 | 27 Jan 2026 – 16 Sept 2026 | Hacking / intrusion | HHS |
| AdaptHealth, LLC · Healthcare | 2 | 27 Jun 2026 – 14 Aug 2026 | Hacking / intrusion | HHS, SEC 8-K |
| CareCloud, Inc. · Healthcare | 2 | 24 Mar 2026 – 24 Jul 2026 | Hacking / intrusion | HHS, SEC 8-K |
| Clinical Registry Solutions · Healthcare | 2 | 9 Apr 2026 – 12 Jun 2026 | Hacking / intrusion | HHS, VCDB |
| Open Arms Care Corporation · Healthcare | 2 | 1 Jun 2025 – 11 Jun 2026 | Hacking / intrusion | HHS, VCDB |
| Gastro Health · Healthcare | 2 | 22 May 2026 – 22 May 2026 | Hacking / intrusion | HHS |
6All incidents
3,218 incidents match, newest first.
| Date | Organisation | Type of attack | Sector | Where | Affected | Source |
|---|---|---|---|---|---|---|
| 2010-12-22 | Dean Health Systems, Inc.; St. Mary's Hospital; St. Mary's Dean Ventures, Inc. | Theft or loss | Healthcare | WI, US | 3,288 records | VCDB |
| 2010-12-22 | Mountain Vista Medical Center | Error / misconfiguration | Healthcare | AZ, US | 2,284 records | VCDB |
| 2010-12-22 | Zarzamora Family Dental Care | Theft or loss | Healthcare | TX, US | 800 records | VCDB |
| 2010-12-20 | Friendship Center Dental Office | Theft or loss | Healthcare | FL, US | 2,200 records | VCDB |
| 2010-12-17 | Ortho Montana, PSC | Error / misconfiguration | Healthcare | MT, US | 37k records | VCDB |
| 2010-12-13 | Jefferson Center for Mental Health | Theft or loss | Healthcare | CO, US | 546 records | VCDB |
| 2010-12-10 | Albert Einstein Healthcare Network | Theft or loss | Healthcare | PA, US | 613 records | VCDB |
| 2010-12-10 | Kings County Hospital Center | Theft or loss | Healthcare | NY, US | 542 records | VCDB |
| 2010-12-10 | Long Beach Memorial Medical Center | Unknown | Healthcare | CA, US | 2,250 records | VCDB |
| 2010-12-10 | Memorial Hospital of Gardena | Unknown | Healthcare | CA, US | 771 records | VCDB |
| 2010-12-10 | Newark Beth Israel Medical Center | Unknown | Healthcare | NJ, US | 1,744 records | VCDB |
| 2010-12-10 | Oklahoma City VA Medical Center | Error / misconfiguration | Healthcare | OK, US | 1,950 records | VCDB |
| 2010-12-10 | University of Tennessee Medical Center | Error / misconfiguration | Healthcare | TN, US | 8,200 records | VCDB |
| 2010-12-09 | CBR Systems (Cord Blood Bank) | Theft or loss | Healthcare | CA, US | 300k records | VCDB |
| 2010-12-02 | Baylor Heart and Vascular Center | Theft or loss | Healthcare | TX, US | 8,241 records | VCDB |
| 2010-12-02 | Holy Cross Hospital | Theft or loss | Healthcare | FL, US | 1,500 records | VCDB |
| 2010-12-02 | Robert Wheatley, DDS, PC | Theft or loss | Healthcare | MO, US | 1,400 records | VCDB |
| 2010-12-01 | Misericordia Hospital | Phishing / social engineering | Healthcare | CA | — | VCDB |
| 2010-11-27 | Baptist Memorial Hospital - Huntingdon | Error / misconfiguration | Healthcare | TN, US | 4,800 records | VCDB |
| 2010-11-25 | Osceola Medical Center | Hacking / intrusion | Healthcare | WI, US | 500 records | VCDB |
| 2010-11-24 | Jeffrey J. Smith, MD | Error / misconfiguration | Healthcare | OK, US | 600 records | VCDB |
| 2010-11-23 | Grays Harbor Pediatrics, PLLC | Theft or loss | Healthcare | WA, US | 13k records | VCDB |
| 2010-11-22 | University of Nebraska Medical Center | Theft or loss | Healthcare | NE, US | 611 records | VCDB |
| 2010-11-19 | Henry Ford Hospital | Theft or loss | Healthcare | MI, US | 3,700 records | VCDB |
| 2010-11-19 | Manor Care of Indy (South), LLC | Unknown | Healthcare | IN, US | 845 records | VCDB |
| 2010-11-19 | Sta-Home Health & Hospice | Theft or loss | Healthcare | MS, US | 1,104 records | VCDB |
| 2010-11-19 | VNA of Southeasten CT | Theft or loss | Healthcare | CT, US | 12k records | VCDB |
| 2010-11-17 | Southern Perioperative Services, PC | Theft or loss | Healthcare | AL, US | 2,046 records | VCDB |
| 2010-11-15 | California Therapy Solutions | Theft or loss | Healthcare | CA, US | 1,226 records | VCDB |
| 2010-11-15 | St. Vincent Hospital - Indianapolis | Hacking / intrusion | Healthcare | IN, US | 1,848 records | VCDB |
| 2010-11-12 | Centra | Theft or loss | Healthcare | VA, US | 12k records | VCDB |
| 2010-11-12 | Seacoast Radiology, PA | Hacking / intrusion | Healthcare | NH, US | 231k records | VCDB |
| 2010-11-12 | Visiting Nurse Service Association of Schenectady County | Theft or loss | Healthcare | NY, US | 535 records | VCDB |
| 2010-11-11 | Kadlec Regional Medical Center | Unknown | Healthcare | WA, US | 834 records | VCDB |
| 2010-11-10 | Ankle & foot Center of Tampa Bay, Inc. | Hacking / intrusion | Healthcare | FL, US | 156k records | VCDB |
| 2010-11-10 | Debra C. Duffy, DDS | Theft or loss | Healthcare | TX, US | 4,700 records | VCDB |
| 2010-11-10 | Northridge Hospital Medical Center | Error / misconfiguration | Healthcare | CA, US | 837 records | VCDB |
| 2010-11-09 | Indiana Family and Social Services Administration | Theft or loss | Healthcare | IN, US | 757 records | VCDB |
| 2010-11-06 | Geisinger Wyoming Valley Medical Center | Error / misconfiguration | Healthcare | PA, US | 2,928 records | VCDB |
| 2010-11-05 | OhioHealth Corporation dba Grant Medical Center | Theft or loss | Healthcare | OH, US | 501 records | VCDB |
| 2010-11-02 | Mankato Clinic | Theft or loss | Healthcare | MN, US | 3,159 records | VCDB |
| 2010-11-01 | Bluewater Health | Insider misuse | Healthcare | CA | — | VCDB |
| 2010-10-28 | SW Seattle Orthopaedic and Sports Medicine | Hacking / intrusion | Healthcare | WA, US | 9,493 records | VCDB |
| 2010-10-26 | Clarksburg--Louis A. Johnson VA Medical Center | Error / misconfiguration | Healthcare | WV, US | 1,470 records | VCDB |
| 2010-10-18 | Cumberland Gastroenterology, P.S.C. | Theft or loss | Healthcare | KY, US | 2,207 records | VCDB |
| 2010-10-18 | LoneStar Audiology Group | Theft or loss | Healthcare | TX, US | 585 records | VCDB |
| 2010-10-18 | WESTMED Medical Group | Theft or loss | Healthcare | NY, US | 578 records | VCDB |
| 2010-10-07 | Alliance HealthCare Services, Inc. | Error / misconfiguration | Healthcare | CA, US | 1,469 records | VCDB |
| 2010-10-07 | Alliance HealthCare Services, Inc. | Error / misconfiguration | Healthcare | CA, US | 1,474 records | VCDB |
| 2010-10-07 | Lorenzo Brown, MD, Inc. | Theft or loss | Healthcare | CA, US | 928 records | VCDB |
Sources: US HHS breach portal, SEC EDGAR, Have I Been Pwned (CC BY 4.0) and the VERIS Community Database (CC BY-SA 4.0). Updated 2026-10-15 19:37 UTC.