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 |
|---|---|---|---|---|---|---|
| 2010-07-12 | Centerstone | Error / misconfiguration | Healthcare | TN, US | 1,537 records | VCDB |
| 2010-07-12 | SunBridge Healthcare Corporation | Theft or loss | Healthcare | NM, US | 3,830 records | VCDB |
| 2010-07-12 | University Hospital | Error / misconfiguration | Healthcare | GA, US | 14k records | VCDB |
| 2010-07-11 | DeKalb Medical Center, Inc. d/b/a DeKalb Medical Hillandale | Theft or loss | Healthcare | GA, US | 7,500 records | VCDB |
| 2010-07-06 | Alma Aguado, MD PA | Theft or loss | Healthcare | TX, US | 600 records | VCDB |
| 2010-07-01 | Children's Hospital & Research Center at Oakland | Unknown | Healthcare | CA, US | 1,000 records | VCDB |
| 2010-07-01 | Mary M. Desch, MD | Theft or loss | Healthcare | AZ, US | 5,893 records | VCDB |
| 2010-07-01 | Sinai Hospital of Baltimore, Inc. | Error / misconfiguration | Healthcare | MD, US | 937 records | VCDB |
| 2010-06-29 | Lincoln Medical and Mental Health Center | Error / misconfiguration | Healthcare | NY, US | 130k records | VCDB |
| 2010-06-26 | Children's Medical Center of Dayton | Error / misconfiguration | Healthcare | OH, US | 1,001 records | VCDB |
| 2010-06-11 | Occupational Health Partners | Theft or loss | Healthcare | KS, US | 1,105 records | VCDB |
| 2010-06-11 | TennCare | Theft or loss | Healthcare | TN, US | 11k records | VCDB |
| 2010-06-10 | St. Jude Children's Research Hospital | Error / misconfiguration | Healthcare | TN, US | 1,745 records | VCDB |
| 2010-06-09 | Nihal Saran, MD | Theft or loss | Healthcare | MI, US | 2,300 records | VCDB |
| 2010-06-03 | Cincinnati Children's Hospital Medical Center | Theft or loss | Healthcare | OH, US | 61k records | VCDB |
| 2010-06-03 | Peterborough Regional Health Centre | Insider misuse | Healthcare | CA | 201 records | VCDB |
| 2010-06-03 | Rainbow Hospice and Palliative Care | Theft or loss | Healthcare | IL, US | 1,000 records | VCDB |
| 2010-05-28 | University of Rochester Medical Center | Unknown | Healthcare | NY, US | 2,628 records | VCDB |
| 2010-05-27 | Oconee Physician Practices | Theft or loss | Healthcare | SC, US | 653 records | VCDB |
| 2010-05-25 | VA North Texas Health Care System | Error / misconfiguration | Healthcare | TX, US | 4,083 records | VCDB |
| 2010-05-20 | Regina Qu'Appelle Regional Health Authority | Error / misconfiguration | Healthcare | CA | 15 records | VCDB |
| 2010-05-19 | Georgetown University Hospital | Insider misuse | Healthcare | DC, US | 2,416 records | VCDB |
| 2010-05-19 | Rockbridge Area Community Services | Theft or loss | Healthcare | VA, US | 500 records | VCDB |
| 2010-05-18 | Heriberto Rodriguez-Ayala, MD | Theft or loss | Healthcare | TX, US | 4,200 records | VCDB |
| 2010-05-17 | Loma Linda University Health Care | Theft or loss | Healthcare | CA, US | 584 records | VCDB |
| 2010-05-17 | Silicon Valley Eye Care Optometry and Contact Lenses | Theft or loss | Healthcare | CA, US | 40k records | VCDB |
| 2010-05-17 | VA Eastern Colorado Health Care System | Error / misconfiguration | Healthcare | CO, US | 649 records | VCDB |
| 2010-05-13 | Miami VA Healthcare System | Error / misconfiguration | Healthcare | FL, US | 568 records | VCDB |
| 2010-05-12 | South Texas Veterans Health Care System | Error / misconfiguration | Healthcare | TX, US | 1,430 records | VCDB |
| 2010-05-06 | Centro de Ortodoncia | Unknown | Healthcare | PR, US | 2,000 records | VCDB |
| 2010-05-06 | Pediatric Sports and Spine Associates | Theft or loss | Healthcare | TX, US | 955 records | VCDB |
| 2010-05-05 | Emergency Healthcare Physicians, Ltd. | Theft or loss | Healthcare | IL, US | 180k records | VCDB |
| 2010-05-04 | Massachusetts Eye and Ear Infirmary | Theft or loss | Healthcare | MA, US | 3,621 records | VCDB |
| 2010-05-04 | Medical Center at Bowling Green | Theft or loss | Healthcare | KY, US | 5,418 records | VCDB |
| 2010-05-04 | Our Lady of Peace Hospital | Error / misconfiguration | Healthcare | KY, US | 25k records | VCDB |
| 2010-04-30 | St. Joseph Heritage Healthcare | Theft or loss | Healthcare | CA, US | 22k records | VCDB |
| 2010-04-29 | Beatrice Community Hospital and Health Center | Unknown | Healthcare | NE, US | 660 records | VCDB |
| 2010-04-26 | Tomah Memorial Hospital | Insider misuse | Healthcare | WI, US | 600 records | VCDB |
| 2010-04-22 | Texas Health Harris Methodist Hospital | Error / misconfiguration | Healthcare | TX, US | 9,922 records | VCDB |
| 2010-04-20 | Reliant Rehabilitation Hospital North Houston | Error / misconfiguration | Healthcare | TX, US | 763 records | VCDB |
| 2010-04-15 | John Muir Physician Network | Theft or loss | Healthcare | CA, US | 5,450 records | VCDB |
| 2010-04-15 | Laboratory Corporation of America | Theft or loss | Healthcare | AZ, US | 2,773 records | VCDB |
| 2010-04-15 | Providence Hospital | Error / misconfiguration | Healthcare | MI, US | 84k records | VCDB |
| 2010-04-15 | University of Pittsburgh Student Health Center | Theft or loss | Healthcare | PA, US | 8,000 records | VCDB |
| 2010-04-15 | VHS Genesis Lab Inc. | Error / misconfiguration | Healthcare | IL, US | 6,800 records | VCDB |
| 2010-04-12 | Griffin Hospital | Unknown | Healthcare | CT, US | 957 records | VCDB |
| 2010-04-12 | Hypertension, Nephrology, Dialysis and Transplantation, PC | Theft or loss | Healthcare | AL, US | 2,024 records | VCDB |
| 2010-04-12 | Mount Sinai Medical Center | Theft or loss | Healthcare | FL, US | 2,600 records | VCDB |
| 2010-03-31 | Laboratory Corporation of America | Theft or loss | Healthcare | WA, US | 5,080 records | VCDB |
| 2010-03-31 | Lee Memorial Health System | Error / misconfiguration | Healthcare | FL, US | 3,800 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 21:36 UTC.