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
- Credential compilation (no single victim)5
- Infostealer logs5
- Theft or loss4
- Error / misconfiguration1
- Hacking / intrusion797
- Data breach (cause not stated)151
- Unauthorised access or disclosure62
- Ransomware9
- Credential compilation (no single victim)5
- Infostealer logs5
- Theft or loss4
- Error / misconfiguration1
- Hacking / intrusion797
- Data breach (cause not stated)151
- Unauthorised access or disclosure62
- Ransomware9
- Credential compilation (no single victim)5
- Infostealer logs5
- Theft or loss4
- Error / misconfiguration1
- Hacking / intrusion77%
- Data breach (cause not stated)15%
- Unauthorised access or disclosure6%
- Ransomware1%
- Credential compilation (no single victim)0%
- Infostealer logs0%
- 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 | |||||
| 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
3,218 incidents match, newest first.
| Date | Organisation | Type of attack | Sector | Where | Affected | Source |
|---|---|---|---|---|---|---|
| 2011-11-18 | Conway Regional Medical Center | Error / misconfiguration | Healthcare | AR, US | 1,472 records | VCDB |
| 2011-11-18 | Julie A. Kennedy, DMD, PA | Theft or loss | Healthcare | FL, US | 2,900 records | VCDB |
| 2011-11-18 | Morris Heights Health Center | Theft or loss | Healthcare | NY, US | 927 records | VCDB |
| 2011-11-18 | Premier Imaging | Insider misuse | Healthcare | NC, US | 551 records | VCDB |
| 2011-11-18 | Stone Oak Urgent Care & Family Practice | Error / misconfiguration | Healthcare | TX, US | 3,079 records | VCDB |
| 2011-11-18 | UCLA Health System | Theft or loss | Healthcare | CA, US | 2,761 records | VCDB |
| 2011-11-04 | Florida Hospital | Unknown | Healthcare | FL, US | 13k records | VCDB |
| 2011-11-04 | Summit Medical Group, PLLC | Theft or loss | Healthcare | TN, US | 731 records | VCDB |
| 2011-11-04 | Thomas Jefferson University Hospitals, Inc. | Theft or loss | Healthcare | PA, US | 3,150 records | VCDB |
| 2011-11-04 | Wyatt Dental Group | Insider misuse | Healthcare | LA, US | 10k records | VCDB |
| 2011-11-01 | District Health Board | Insider misuse | Healthcare | NZ | 64 records | VCDB |
| 2011-11-01 | Holy Cross Hospital | Insider misuse | Healthcare | FL, US | 9,900 records | VCDB |
| 2011-11-01 | Regina Qu'appelle Health Region | Insider misuse | Healthcare | CA | 7 records | VCDB |
| 2011-10-17 | Sutter Health | Theft or loss | Healthcare | CA, US | 4.2M records | VCDB |
| 2011-10-11 | 21st Century Oncology Services | Insider misuse | Healthcare | MD, US | — | VCDB |
| 2011-10-01 | Crozer-Chester Medical Center | Insider misuse | Healthcare | PA, US | 144 records | VCDB |
| 2011-10-01 | Kaiser Permanente Northern California Department of Research | Malware | Healthcare | CA, US | — | VCDB |
| 2011-10-01 | TAT Elbowoods Memorial Health Center | Error / misconfiguration | Healthcare | ND, US | 10k records | VCDB |
| 2011-09-24 | Diatherix Laboratories | Error / misconfiguration | Healthcare | AL, US | 7,016 records | VCDB |
| 2011-09-24 | Kaiser Permante | Error / misconfiguration | Healthcare | CA, US | 51k records | VCDB |
| 2011-09-23 | Health Texas Provider Network | Theft or loss | Healthcare | TX, US | 1,259 records | VCDB |
| 2011-09-20 | Lawrence Memorial Hospital | Error / misconfiguration | Healthcare | KS, US | 10k records | VCDB |
| 2011-09-14 | John T. Melvin, M.D.& Associates | Theft or loss | Healthcare | TX, US | 2,541 records | VCDB |
| 2011-09-01 | Sentara General Hospital | Insider misuse | Healthcare | VA, US | 3,700 records | VCDB |
| 2011-08-28 | InStep Foot Clinic, PA | Theft or loss | Healthcare | MN, US | 2,600 records | VCDB |
| 2011-08-12 | Indiana University School of Optometry | Error / misconfiguration | Healthcare | IN, US | 757 records | VCDB |
| 2011-08-08 | Freda J. Bowman MD PA | Unknown | Healthcare | TX, US | 1,300 records | VCDB |
| 2011-08-08 | Henry Ford Health System | Theft or loss | Healthcare | MI, US | 520 records | VCDB |
| 2011-08-03 | Brigham & Women's Hospital | Theft or loss | Healthcare | MA, US | 638 records | VCDB |
| 2011-08-01 | Combined Healthcare | Error / misconfiguration | Healthcare | GB | 3 records | VCDB |
| 2011-08-01 | Nemours Foundation | Error / misconfiguration | Healthcare | FL, US | 1.1M records | VCDB |
| 2011-08-01 | Tallahassee Memorial HealthCare | Hacking / intrusion | Healthcare | FL, US | 124 records | VCDB |
| 2011-07-29 | Treatment Services Northwest | Theft or loss | Healthcare | OR, US | 1,200 records | VCDB |
| 2011-07-27 | Muir Orthopaedic Specialists, A Medical Group Inc. | Theft or loss | Healthcare | CA, US | 1,800 records | VCDB |
| 2011-07-25 | Fairview Health Services | Theft or loss | Healthcare | MN, US | 14k records | VCDB |
| 2011-07-25 | North Memorial | Theft or loss | Healthcare | MN, US | 9,500 records | VCDB |
| 2011-07-13 | Jonathan Noel MD | Theft or loss | Healthcare | IN, US | 2,059 records | VCDB |
| 2011-07-12 | NEA Baptist Clinic | Hacking / intrusion | Healthcare | AR, US | 3,116 records | VCDB |
| 2011-07-08 | Austin Center for Therapy and Assessment, LLC | Theft or loss | Healthcare | TX, US | 1,870 records | VCDB |
| 2011-07-02 | Neurological Institute of Savannah & Center of Spine | Theft or loss | Healthcare | GA, US | 63k records | VCDB |
| 2011-07-01 | Florida Hospital Celebration | Insider misuse | Healthcare | FL, US | 760k records | VCDB |
| 2011-07-01 | Health Research Institute, Inc., Pfeiifer Treatment Center | Theft or loss | Healthcare | IL, US | 2,000 records | VCDB |
| 2011-06-24 | Clara Maass Medical Center | Theft or loss | Healthcare | NJ, US | 8,795 records | VCDB |
| 2011-06-23 | NYU Hospital Center | Error / misconfiguration | Healthcare | NY, US | 2,600 records | VCDB |
| 2011-06-22 | NOL, LLC d/b/a Premier Radiology | Theft or loss | Healthcare | TN, US | 810 records | VCDB |
| 2011-06-21 | Texas Health Presbyterian Hospital Flower Mound | Theft or loss | Healthcare | TX, US | 10k records | VCDB |
| 2011-06-14 | University of Missouri Health Care | Unknown | Healthcare | MO, US | 1,288 records | VCDB |
| 2011-06-07 | Mount Sinai Medical Center | Theft or loss | Healthcare | NY, US | 712 records | VCDB |
| 2011-06-02 | Saint Joseph - Berea | Error / misconfiguration | Healthcare | KY, US | 1,986 records | VCDB |
| 2011-06-01 | Unnamed organisation | Phishing / social engineering | Healthcare | AL, US | — | 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 16:31 UTC.