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 |
|---|---|---|---|---|---|---|
| 2010-03-31 | University Medical Center of Southern Nevada | Error / misconfiguration | Healthcare | NV, US | 5,103 records | VCDB |
| 2010-03-23 | Aspen Dental Care PC | Theft or loss | Healthcare | CO, US | 2,500 records | VCDB |
| 2010-03-23 | Ernest T. Bice, Jr. DDS, PA | Theft or loss | Healthcare | TX, US | 21k records | VCDB |
| 2010-03-23 | Montefiore Medical Center | Theft or loss | Healthcare | NY, US | 625 records | VCDB |
| 2010-03-09 | Advanced NeuroSpinal Care | Error / misconfiguration | Healthcare | CA, US | 3,500 records | VCDB |
| 2010-03-09 | Lucile Packard Children's Hospital | Error / misconfiguration | Healthcare | CA, US | 532 records | VCDB |
| 2010-03-09 | University of New Mexico Health Sciences Center | Malware | Healthcare | NM, US | 1,898 records | VCDB |
| 2010-03-04 | Cardiology Consultants/Baptist Health Care Corporation | Theft or loss | Healthcare | FL, US | 7,600 records | VCDB |
| 2010-03-04 | MMM Healthcare, Inc. | Unknown | Healthcare | NY, US | 1,907 records | VCDB |
| 2010-02-22 | Advocate Health Care | Theft or loss | Healthcare | IL, US | 812 records | VCDB |
| 2010-02-22 | Ashley and Gray DDS | Theft or loss | Healthcare | MO, US | 9,309 records | VCDB |
| 2010-02-22 | Blue Island Radiology Consultants | Error / misconfiguration | Healthcare | IL, US | 2,562 records | VCDB |
| 2010-02-22 | Brooke Army Medical Center | Theft or loss | Healthcare | TX, US | 1,000 records | VCDB |
| 2010-02-22 | Carle Clinic Association | Phishing / social engineering | Healthcare | IL, US | 1,300 records | VCDB |
| 2010-02-22 | Children's Hospital of Philadelphia | Theft or loss | Healthcare | PA, US | 943 records | VCDB |
| 2010-02-22 | Children's Medical Center of Dallas | Error / misconfiguration | Healthcare | TX, US | 3,800 records | VCDB |
| 2010-02-22 | City of Hope National Medical Center | Theft or loss | Healthcare | CA, US | 5,900 records | VCDB |
| 2010-02-22 | Cogent Healthcare of Wisconsin, S.C. | Theft or loss | Healthcare | TN, US | 6,400 records | VCDB |
| 2010-02-22 | Concentra Health | Theft or loss | Healthcare | TX, US | 900 records | VCDB |
| 2010-02-22 | Daniel J. Sigman MD, PC | Theft or loss | Healthcare | MA, US | 1,860 records | VCDB |
| 2010-02-22 | Goodwill Industries of Greater Grand Rapids, Inc. | Theft or loss | Healthcare | MI, US | 10k records | VCDB |
| 2010-02-22 | Health Services for Children with Special Needs | Error / misconfiguration | Healthcare | DC, US | 3,800 records | VCDB |
| 2010-02-22 | Kaiser Permanente Medical Care Program | Theft or loss | Healthcare | CA, US | 16k records | VCDB |
| 2010-02-22 | Keith W. Mann, DDS, PLLC | Hacking / intrusion | Healthcare | NC, US | 2,000 records | VCDB |
| 2010-02-22 | Kern Medical Center | Theft or loss | Healthcare | CA, US | 596 records | VCDB |
| 2010-02-22 | Massachusetts Eye and Ear Infirmary | Insider misuse | Healthcare | MA, US | 1,076 records | VCDB |
| 2010-02-22 | Methodist Hospital | Theft or loss | Healthcare | TX, US | 689 records | VCDB |
| 2010-02-22 | Michele Del Vicario, MD | Theft or loss | Healthcare | CA, US | 6,145 records | VCDB |
| 2010-02-22 | Mid America Kidney Stone Association, LLC | Theft or loss | Healthcare | MO, US | 1,000 records | VCDB |
| 2010-02-01 | Lanap & Dental Implants of Pennsylvania | Unknown | Healthcare | PA, US | — | VCDB |
| 2010-02-01 | Owensboro Health, Inc. | Insider misuse | Healthcare | KY, US | — | VCDB |
| 2010-01-27 | Shands at the University of Florida | Theft or loss | Healthcare | FL, US | 13k records | VCDB |
| 2010-01-01 | BKK Health | Insider misuse | Healthcare | DE | 1.5M records | VCDB |
| 2010-01-01 | Boulder Community Health | Error / misconfiguration | Healthcare | CO, US | 79 records | VCDB |
| 2010-01-01 | California Pacific Medical Center | Insider misuse | Healthcare | CA, US | 1 records | VCDB |
| 2010-01-01 | Children’s Medical Center of Dallas | Error / misconfiguration | Healthcare | TX, US | 3,800 records | VCDB |
| 2010-01-01 | Good Samaritan Hospital | Insider misuse | Healthcare | CA, US | 49 records | VCDB |
| 2010-01-01 | Hospital | Insider misuse | Healthcare | TX, US | — | VCDB |
| 2010-01-01 | Humber River Hospital | Error / misconfiguration | Healthcare | CA | — | VCDB |
| 2010-01-01 | Misericordia Hospital | Insider misuse | Healthcare | CA | — | VCDB |
| 2010-01-01 | North Shore University Hospital | Theft or loss | Healthcare | NY, US | — | VCDB |
| 2010-01-01 | Perry Hospital | Hacking / intrusion | Healthcare | GA, US | 1 records | VCDB |
| 2010-01-01 | US Department of the Army | Insider misuse | Healthcare | GA, US | — | VCDB |
| 2010-01-01 | Unnamed organisation | Insider misuse | Healthcare | GA, US | — | VCDB |
| 2010-01-01 | Unnamed organisation | Insider misuse | Healthcare | FL, US | 8,678 records | VCDB |
| 2010-01-01 | Vitalit Health Network | Insider misuse | Healthcare | CA | 141 records | VCDB |
| 2010-01-01 | Woodwinds Hospital | Theft or loss | Healthcare | MN, US | — | VCDB |
| 2009-11-01 | BOLTON NHS FOUNDATION TRUST | Error / misconfiguration | Healthcare | GB | — | VCDB |
| 2009-11-01 | Mills-Peninsula Health Services | Unknown | Healthcare | CA, US | 1,438 records | VCDB |
| 2009-10-19 | Warren Hospital | Hacking / intrusion | Healthcare | NJ, 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 22:42 UTC.