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 | |||||
| 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
3,216 incidents match, newest first.
| Date | Organisation | Type of attack | Sector | Where | Affected | Source |
|---|---|---|---|---|---|---|
| 2013-08-01 | Alberta Health Services | Error / misconfiguration | Healthcare | CA | 1 records | VCDB |
| 2013-08-01 | Brookdale Main Street | Theft or loss | Healthcare | TN, US | 1 records | VCDB |
| 2013-08-01 | Heartland Health Region | Insider misuse | Healthcare | CA | 883 records | VCDB |
| 2013-08-01 | Heartland Regional Health Authority | Insider misuse | Healthcare | CA | 833 records | VCDB |
| 2013-08-01 | Hope Family Health Services | Theft or loss | Healthcare | TN, US | 8,000 records | VCDB |
| 2013-08-01 | Hospice Care Foundation | Theft or loss | Healthcare | MO, US | — | VCDB |
| 2013-08-01 | Loyola University Medical Center | Insider misuse | Healthcare | IL, US | — | VCDB |
| 2013-08-01 | Mount Sinai Medical Center | Error / misconfiguration | Healthcare | NY, US | 610 records | VCDB |
| 2013-08-01 | Neath Care | Error / misconfiguration | Healthcare | GB | 10 records | VCDB |
| 2013-08-01 | North Texas Comprehensive Spine and Pain Center | Theft or loss | Healthcare | TX, US | 3,000 records | VCDB |
| 2013-08-01 | Parkwood Hospital | Theft or loss | Healthcare | NJ, US | 2,216 records | VCDB |
| 2013-08-01 | Punuru J.M. Reddy, MD Inc. | Error / misconfiguration | Healthcare | AL, US | 1,179 records | VCDB |
| 2013-08-01 | Southern Primary Health Organisation | Theft or loss | Healthcare | IN, NZ | — | VCDB |
| 2013-08-01 | Spectrum Health | Insider misuse | Healthcare | MI, US | 1 records | VCDB |
| 2013-07-29 | St. Anthony's Nursing Home | Theft or loss | Healthcare | MO, US | 2,600 records | VCDB |
| 2013-07-22 | Olson & White Orthodontics | Theft or loss | Healthcare | MO, US | 10k records | VCDB |
| 2013-07-22 | Summit Community Care Clinic | Error / misconfiguration | Healthcare | CO, US | 921 records | VCDB |
| 2013-07-20 | Caledonia Home Health and Hospice | Theft or loss | Healthcare | VT, US | — | VCDB |
| 2013-07-20 | The Brookdale Hospital and Medical Center | Error / misconfiguration | Healthcare | NY, US | 2,700 records | VCDB |
| 2013-07-19 | University of Texas Health Science Center at Houston | Theft or loss | Healthcare | TX, US | 596 records | VCDB |
| 2013-07-15 | Advocate Medical Group | Theft or loss | Healthcare | IL, US | 4.0M records | VCDB |
| 2013-07-15 | Clark Memorial Hospital | Error / misconfiguration | Healthcare | IN, US | 1,000 records | VCDB |
| 2013-07-15 | National Health Service | Error / misconfiguration | Healthcare | GB | 800 records | VCDB |
| 2013-07-13 | Northwestern Memorial Hospital | Insider misuse | Healthcare | IL, US | — | VCDB |
| 2013-07-08 | Good Samaritan Hospital | Theft or loss | Healthcare | CA, US | 3,833 records | VCDB |
| 2013-07-04 | Royal Jubilee Hospital | Insider misuse | Healthcare | CA | 1 records | VCDB |
| 2013-07-01 | Alliance HealthCare Services Inc | Error / misconfiguration | Healthcare | UT, US | 40k records | VCDB |
| 2013-07-01 | Betsi Cadwaladr University Health Board | Error / misconfiguration | Healthcare | GB | 8 records | VCDB |
| 2013-07-01 | Retinal Consultants Medical Group | Theft or loss | Healthcare | CA, US | 1,837 records | VCDB |
| 2013-07-01 | Samaritan Health Services | Error / misconfiguration | Healthcare | OR, US | — | VCDB |
| 2013-07-01 | Sierra View District Hospital | Unknown | Healthcare | CA, US | 1,009 records | VCDB |
| 2013-06-30 | Medical University of South Carolina | Hacking / intrusion | Healthcare | SC, US | 7,000 records | VCDB |
| 2013-06-28 | Rose Medical Center | Error / misconfiguration | Healthcare | CO, US | 606 records | VCDB |
| 2013-06-26 | James A. Fosnaugh, M.D. | Error / misconfiguration | Healthcare | NE, US | 2,125 records | VCDB |
| 2013-06-22 | South Walkerville Medical Centre | Theft or loss | Healthcare | CA | — | VCDB |
| 2013-06-21 | Marshall Heath | Insider misuse | Healthcare | WV, US | 1 records | VCDB |
| 2013-06-20 | Baylor All Saints Medical Center | Insider misuse | Healthcare | TX, US | — | VCDB |
| 2013-06-19 | Brentwood Primary Care Clinic | Theft or loss | Healthcare | FL, US | 261 records | VCDB |
| 2013-06-18 | Cedars-Sinai Medical Center | Insider misuse | Healthcare | CA, US | 14 records | VCDB |
| 2013-06-17 | Hancock Physician Network | Insider misuse | Healthcare | IN, US | 1,396 records | VCDB |
| 2013-06-15 | Foundations Recovery Network | Theft or loss | Healthcare | TN, US | — | VCDB |
| 2013-06-12 | Cypress Surgery Center | Insider misuse | Healthcare | KS, US | 317 records | VCDB |
| 2013-06-12 | Young Family Medicine | Theft or loss | Healthcare | OH, US | 2,045 records | VCDB |
| 2013-06-09 | THE UNIVERSITY OF ARIZONA MEDICAL CENTER | Error / misconfiguration | Healthcare | AZ, US | 1 records | VCDB |
| 2013-06-07 | Retinal Consultant Medical Group | Theft or loss | Healthcare | CA, US | — | VCDB |
| 2013-06-03 | Community Support Services, Inc. | Theft or loss | Healthcare | OH, US | 1,167 records | VCDB |
| 2013-06-01 | Alberta Children's Hospital | Insider misuse | Healthcare | CA | 247 records | VCDB |
| 2013-06-01 | California Correctional Health Care Services | Error / misconfiguration | Healthcare | CA, US | — | VCDB |
| 2013-06-01 | Cedars-Sinai Medical Center | Insider misuse | Healthcare | CA, US | 4 records | VCDB |
| 2013-06-01 | Flowers Hospital | Insider misuse | 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 06:16 UTC.