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
- 616
- last 12 months, every source
- People in US health breaches
- 70.4M
- 475 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 sectorHealthcare752 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 / intrusion796
- Data breach (cause not stated)151
- Unauthorised access or disclosure61
- Ransomware9
- Infostealer logs5
- Credential compilation (no single victim)5
- Theft or loss4
- Error / misconfiguration1
- Hacking / intrusion796
- Data breach (cause not stated)151
- Unauthorised access or disclosure61
- Ransomware9
- Infostealer logs5
- Credential compilation (no single victim)5
- Theft or loss4
- Error / misconfiguration1
- Hacking / intrusion796
- Data breach (cause not stated)151
- Unauthorised access or disclosure61
- 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 | 684 | 61 | 2 | 4 | 1 | |
| Information | 25 | 3 | ||||
| Manufacturing | 20 | 1 | ||||
| Professional Services | 18 | 1 | ||||
| Retail | 17 | 1 | ||||
| Finance, Insurance & Real Estate | 6 | |||||
| Services | 5 | |||||
| Technology | 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
3,216 incidents match, newest first.
| Date | Organisation | Type of attack | Sector | Where | Affected | Source |
|---|---|---|---|---|---|---|
| 2015-07-03 | UCLA Health | Theft or loss | Healthcare | CA, US | 1,242 records | VCDB |
| 2015-07-01 | AnMed Health Medical Center | Insider misuse | Healthcare | SC, US | 22 records | VCDB |
| 2015-07-01 | Arc Erie County New York’s | Error / misconfiguration | Healthcare | NY, US | 3,700 records | VCDB |
| 2015-07-01 | Dr. Gerardo A. Gamez | Error / misconfiguration | Healthcare | FL, US | — | VCDB |
| 2015-07-01 | Eastern Health | Error / misconfiguration | Healthcare | CA | 9,000 records | VCDB |
| 2015-07-01 | Mental Health Advocacy and Peer Support | Insider misuse | Healthcare | NZ | 200 records | VCDB |
| 2015-07-01 | New Jersey Spine Center | Ransomware | Healthcare | NJ, US | 28k records | VCDB |
| 2015-07-01 | Richmond Radiology | Insider misuse | Healthcare | KY, US | 100 records | VCDB |
| 2015-07-01 | Royal Gwent Hospital | Insider misuse | Healthcare | GB | 6 records | VCDB |
| 2015-07-01 | Serenity Care | Insider misuse | Healthcare | NY, US | 5 records | VCDB |
| 2015-06-29 | Daniel Drake Center for Post-Acute Care | Insider misuse | Healthcare | OH, US | 4,721 records | VCDB |
| 2015-06-27 | Robert E. Soper, M.D. | Theft or loss | Healthcare | CA, US | 2,000 records | VCDB |
| 2015-06-26 | Appalachian Regional Healthcare System | Ransomware | Healthcare | NC, US | — | VCDB |
| 2015-06-24 | Today's Dental Associates | Insider misuse | Healthcare | MD, US | 6 records | VCDB |
| 2015-06-19 | Cancer Care Northwest (CCNW) | Error / misconfiguration | Healthcare | WA, US | 1,426 records | VCDB |
| 2015-06-15 | East Sussex Healthcare | Error / misconfiguration | Healthcare | GB | — | VCDB |
| 2015-06-15 | Endocrinology Associates | Error / misconfiguration | Healthcare | OH, US | 1,400 records | VCDB |
| 2015-06-12 | University of Oklahoma College of Medicine | Theft or loss | Healthcare | OK, US | 7,693 records | VCDB |
| 2015-06-11 | Dr. Everett Chalmers Hospital | Theft or loss | Healthcare | CA | 158 records | VCDB |
| 2015-06-09 | Akron Children's Hospital | Error / misconfiguration | Healthcare | OH, US | 7,600 records | VCDB |
| 2015-06-09 | Wolverhampton NHS Primary Care Trust | Error / misconfiguration | Healthcare | GB | — | VCDB |
| 2015-06-07 | Greene County office of Department of Human Services | Error / misconfiguration | Healthcare | AK, US | — | VCDB |
| 2015-06-02 | Dr. Olartino Dyoco | Theft or loss | Healthcare | CA, US | 9,000 records | VCDB |
| 2015-06-01 | Bay Area Chiropractic Center LLC | Insider misuse | Healthcare | OR, US | — | VCDB |
| 2015-06-01 | Cefalu Eye-Tech of Green, Inc. | Insider misuse | Healthcare | OH, US | 850 records | VCDB |
| 2015-06-01 | East Sussex Healthcare Trust | Error / misconfiguration | Healthcare | GB | 3,634 records | VCDB |
| 2015-06-01 | Hamilton General Hospital | Insider misuse | Healthcare | CA | 397 records | VCDB |
| 2015-06-01 | Lawrence General Hospital | Error / misconfiguration | Healthcare | MA, US | 2,071 records | VCDB |
| 2015-06-01 | Mercy Medical Center Redding | Insider misuse | Healthcare | CA, US | 520 records | VCDB |
| 2015-06-01 | Montefiore Health System | Phishing / social engineering | Healthcare | NY, US | 13k records | VCDB |
| 2015-06-01 | Richmond Radiology | Error / misconfiguration | Healthcare | KY, US | — | VCDB |
| 2015-06-01 | St. Lucie Medical Center | Error / misconfiguration | Healthcare | FL, US | 2 records | VCDB |
| 2015-06-01 | St. Mary Medical Center | Ransomware | Healthcare | PA, US | 13k records | VCDB |
| 2015-05-25 | Prima CARE, P.C. | Error / misconfiguration | Healthcare | MA, US | 1,651 records | VCDB |
| 2015-05-18 | Daniel A. Sheldon, M.D., P.A. | Error / misconfiguration | Healthcare | FL, US | 2,075 records | VCDB |
| 2015-05-18 | Peachtree Orthopedic Clinic | Hacking / intrusion | Healthcare | GA, US | — | VCDB |
| 2015-05-14 | ProMedica hospitals | Insider misuse | Healthcare | MI, US | 3,472 records | VCDB |
| 2015-05-11 | Lasair Aesthetic Health | Insider misuse | Healthcare | CO, US | — | VCDB |
| 2015-05-01 | Access Adult Family Care Home | Insider misuse | Healthcare | FL, US | — | VCDB |
| 2015-05-01 | Harvey Pain Institute | Insider misuse | Healthcare | MI, US | 12 records | VCDB |
| 2015-05-01 | McLean Hospital | Insider misuse | Healthcare | MA, US | 13k records | VCDB |
| 2015-05-01 | OhioHealth Riverside Methodist Hospital | Error / misconfiguration | Healthcare | OH, US | 1,006 records | VCDB |
| 2015-05-01 | SUNY Upstate University Hospital | Insider misuse | Healthcare | NY, US | 2 records | VCDB |
| 2015-05-01 | Vanderbilt University Medical Center | Insider misuse | Healthcare | TN, US | 3,247 records | VCDB |
| 2015-04-22 | Berkeley Endocrine Clinic | Error / misconfiguration | Healthcare | CA, US | — | VCDB |
| 2015-04-22 | U.S. HealthWorks | Theft or loss | Healthcare | CA, US | — | VCDB |
| 2015-04-09 | Oceans Acquisitions, Inc. | Theft or loss | Healthcare | TX, US | 659 records | VCDB |
| 2015-04-08 | Florida Hospital Medical Group | Error / misconfiguration | Healthcare | MS, US | 1,906 records | VCDB |
| 2015-04-03 | Augustus F. Hawkins Mental Health Center | Theft or loss | Healthcare | CA, US | 900 records | VCDB |
| 2015-04-03 | Oregon Health Co-op | Theft or loss | Healthcare | OR, US | 14k 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 2026-10-14 19:04 UTC.