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 | |||||
| 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 |
|---|---|---|---|---|---|---|
| 2011-05-23 | Sutter Gould Medical Foundation | Error / misconfiguration | Healthcare | CA, US | 1,192 records | VCDB |
| 2011-05-22 | Yanez Dental Corporation | Theft or loss | Healthcare | CA, US | 10k records | VCDB |
| 2011-05-09 | Gypsum Management and Supply, Inc. Medical and Dental Plan | Hacking / intrusion | Healthcare | GA, US | 25k records | VCDB |
| 2011-05-09 | PMC Medicare Choice | Theft or loss | Healthcare | PR | 24k records | VCDB |
| 2011-05-08 | Robert B. Neves, MD, Inc. | Theft or loss | Healthcare | CA, US | 611 records | VCDB |
| 2011-05-01 | BOLTON NHS FOUNDATION TRUST | Error / misconfiguration | Healthcare | US | 19 records | VCDB |
| 2011-04-28 | Foothills Nephrology, PC | Theft or loss | Healthcare | SC, US | 1,280 records | VCDB |
| 2011-04-25 | Health Plan of San Mateo | Unknown | Healthcare | CA, US | 694 records | VCDB |
| 2011-04-17 | Beth Israel Deaconess Medical Center | Hacking / intrusion | Healthcare | MA, US | 2,021 records | VCDB |
| 2011-04-17 | HealthCare Partners | Theft or loss | Healthcare | CA, US | 16k records | VCDB |
| 2011-04-16 | Methodist Charlton Medical Center | Theft or loss | Healthcare | TX, US | 1,500 records | VCDB |
| 2011-04-12 | Drs. Edalji & Komer | Theft or loss | Healthcare | MA, US | 563 records | VCDB |
| 2011-04-04 | Gene S. J. Liaw, MD. PS | Error / misconfiguration | Healthcare | WA, US | 1,105 records | VCDB |
| 2011-04-03 | Speare Memorial Hospital | Theft or loss | Healthcare | Unknown | 5,994 records | VCDB |
| 2011-04-02 | Reid Hospital & Health Care Services | Theft or loss | Healthcare | IN, US | 22k records | VCDB |
| 2011-04-01 | New River Health Association | Unknown | Healthcare | WV, US | 950 records | VCDB |
| 2011-04-01 | Robert B. Miller, MD | Theft or loss | Healthcare | CA, US | 620 records | VCDB |
| 2011-04-01 | Tuba City Regional Health Care Corporation | Error / misconfiguration | Healthcare | AZ, US | 2,000 records | VCDB |
| 2011-04-01 | Urological Associates of Southern Arizona, P.C. | Error / misconfiguration | Healthcare | AZ, US | 3,000 records | VCDB |
| 2011-03-30 | VA Caribbean Healthcare System | Error / misconfiguration | Healthcare | PR, US | 6,006 records | VCDB |
| 2011-03-28 | Spartanburg Regional Healthcare System | Theft or loss | Healthcare | SC, US | 400k records | VCDB |
| 2011-03-25 | Park Avenue Obstetrics & Gynecology, PC | Theft or loss | Healthcare | AZ, US | 635 records | VCDB |
| 2011-03-22 | Troy Regional Medical Center | Theft or loss | Healthcare | AL, US | 881 records | VCDB |
| 2011-03-15 | Imaging Center of Garland | Error / misconfiguration | Healthcare | TX, US | 1,031 records | VCDB |
| 2011-03-15 | Navos | Unknown | Healthcare | WA, US | 2,700 records | VCDB |
| 2011-03-11 | Eisenhower Medical Center | Theft or loss | Healthcare | CA, US | 514k records | VCDB |
| 2011-03-10 | MacNeal Hospital | Hacking / intrusion | Healthcare | IL, US | 845 records | VCDB |
| 2011-03-10 | MacNeal Physician Group | Hacking / intrusion | Healthcare | IL, US | 532 records | VCDB |
| 2011-03-10 | Phoenix Health Plan | Hacking / intrusion | Healthcare | AZ, US | 9,393 records | VCDB |
| 2011-03-10 | West Lake Hospital | Hacking / intrusion | Healthcare | IL, US | 686 records | VCDB |
| 2011-03-01 | Brian J Daniels D.D.S.,Paul R Daniels D.D.S. | Theft or loss | Healthcare | AZ, US | 10k records | VCDB |
| 2011-03-01 | Sutter Health | Error / misconfiguration | Healthcare | CA, US | 4,479 records | VCDB |
| 2011-03-01 | Windsor Health Plan | Error / misconfiguration | Healthcare | TN, US | 1,378 records | VCDB |
| 2011-02-25 | Center for Arthritis and Rheumatic Diseases | Theft or loss | Healthcare | FL, US | 8,000 records | VCDB |
| 2011-02-23 | Community Action Partnership of Natrona County | Hacking / intrusion | Healthcare | WY, US | 15k records | VCDB |
| 2011-02-19 | Fairview Health Services | Error / misconfiguration | Healthcare | MN, US | 1,215 records | VCDB |
| 2011-02-16 | Aiken Community Based Outpatient Clinic | Error / misconfiguration | Healthcare | SC, US | 2,717 records | VCDB |
| 2011-02-16 | Keith & Fisher, DDS, PA | Hacking / intrusion | Healthcare | NC, US | 6,000 records | VCDB |
| 2011-02-16 | SW General Inc. | Theft or loss | Healthcare | AZ, US | 566 records | VCDB |
| 2011-02-14 | MidState Medical Center | Error / misconfiguration | Healthcare | CT, US | 94k records | VCDB |
| 2011-02-08 | Charleston Area Medical Center, Inc | Unknown | Healthcare | WV, US | 3,655 records | VCDB |
| 2011-02-05 | Capron Rescue Squad District | Unknown | Healthcare | IL, US | 815 records | VCDB |
| 2011-02-03 | Rape & Brooks Orthodontics, PC | Theft or loss | Healthcare | AL, US | 21k records | VCDB |
| 2011-01-31 | Henry Ford Hospital | Error / misconfiguration | Healthcare | MI, US | 2,777 records | VCDB |
| 2011-01-31 | Henry Ford Hospital | Error / misconfiguration | Healthcare | MI, US | 2,777 records | VCDB |
| 2011-01-27 | NYU School of Medicine Faculty Group Practice | Theft or loss | Healthcare | NY, US | 670 records | VCDB |
| 2011-01-27 | NZ Southern District Health Board | Insider misuse | Healthcare | NZ | — | VCDB |
| 2011-01-27 | Nyu Langone Medical Center | Theft or loss | Healthcare | NY, US | 670 records | VCDB |
| 2011-01-25 | Maryville Academy | Unknown | Healthcare | IL, US | 3,897 records | VCDB |
| 2011-01-25 | University Hospitals | Insider misuse | Healthcare | OH, US | 692 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 17:37 UTC.