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 |
|---|---|---|---|---|---|---|
| 2015-01-01 | Lyell McEwin Hospital | Error / misconfiguration | Healthcare | AU | 3 records | VCDB |
| 2015-01-01 | Mackenzie Health | Error / misconfiguration | Healthcare | CA | — | VCDB |
| 2015-01-01 | Mary Ruth Buchness, MD | Error / misconfiguration | Healthcare | NY, US | 15k records | VCDB |
| 2015-01-01 | Massachusetts General Hospital | Error / misconfiguration | Healthcare | MA, US | 648 records | VCDB |
| 2015-01-01 | Mayo Clinic | Insider misuse | Healthcare | US | 600 records | VCDB |
| 2015-01-01 | MedStar Health | Ransomware | Healthcare | MD, US | — | VCDB |
| 2015-01-01 | Medical Management LLC | Insider misuse | Healthcare | FL, US | 9,200 records | VCDB |
| 2015-01-01 | Methodist Healthcare | Insider misuse | Healthcare | TX, US | 44k records | VCDB |
| 2015-01-01 | Methodist Hospital | Insider misuse | Healthcare | TN, US | 1 records | VCDB |
| 2015-01-01 | Middlesex Hospital | Phishing / social engineering | Healthcare | CT, US | 946 records | VCDB |
| 2015-01-01 | Mosaic Medical | Theft or loss | Healthcare | OH, US | 2,207 records | VCDB |
| 2015-01-01 | Mount Sinai Beth Israel Senior Health Center | Error / misconfiguration | Healthcare | NY, US | — | VCDB |
| 2015-01-01 | Mt Annan Medical Centre | Theft or loss | Healthcare | AU | — | VCDB |
| 2015-01-01 | NYU Langone Medical Center | Insider misuse | Healthcare | NY, US | — | VCDB |
| 2015-01-01 | New York State Department of Health | Error / misconfiguration | Healthcare | NY, US | 50 records | VCDB |
| 2015-01-01 | Norfolk General Hospital | Ransomware | Healthcare | CA | — | VCDB |
| 2015-01-01 | North Church Nursing and Rehabilitation Center | Insider misuse | Healthcare | IL, US | — | VCDB |
| 2015-01-01 | North Collier Hospital | Hacking / intrusion | Healthcare | FL, US | — | VCDB |
| 2015-01-01 | Northside Psychology | Error / misconfiguration | Healthcare | AU | — | VCDB |
| 2015-01-01 | Oklahoma Pain and Rehab | Error / misconfiguration | Healthcare | OK, US | — | VCDB |
| 2015-01-01 | Orange Art of Dentistry | Error / misconfiguration | Healthcare | CA, US | 100 records | VCDB |
| 2015-01-01 | Orlando Health | Error / misconfiguration | Healthcare | FL, US | 68 records | VCDB |
| 2015-01-01 | Orlando Health | Insider misuse | Healthcare | FL, US | 3,200 records | VCDB |
| 2015-01-01 | Palmetto General Hospital | Insider misuse | Healthcare | FL, US | — | VCDB |
| 2015-01-01 | Parkside Manor | Insider misuse | Healthcare | WI, US | 1 records | VCDB |
| 2015-01-01 | PeaceHealth St. John Medical Center | Insider misuse | Healthcare | WA, US | 1,407 records | VCDB |
| 2015-01-01 | Pediatric Gastroenterology, Hepatology & Nutrition | Insider misuse | Healthcare | FL, US | 13k records | VCDB |
| 2015-01-01 | Penn State Hershey Medical Center | Insider misuse | Healthcare | PA, US | 1,801 records | VCDB |
| 2015-01-01 | Phoenix Dental Care | Insider misuse | Healthcare | TN, US | 500 records | VCDB |
| 2015-01-01 | Positive Adjustments | Error / misconfiguration | Healthcare | OH, US | — | VCDB |
| 2015-01-01 | Prime Medical | Theft or loss | Healthcare | AU | — | VCDB |
| 2015-01-01 | Prince Albert Parkland Health Region | Insider misuse | Healthcare | CA | 16 records | VCDB |
| 2015-01-01 | Quaid-i-Azam Hospital | Insider misuse | Healthcare | PK | — | VCDB |
| 2015-01-01 | Quest Diagnostics | Error / misconfiguration | Healthcare | NY, US | — | VCDB |
| 2015-01-01 | Quest Records LLC | Hacking / intrusion | Healthcare | IL, US | — | VCDB |
| 2015-01-01 | Radiology Regional Center, PA | Error / misconfiguration | Healthcare | FL, US | 483k records | VCDB |
| 2015-01-01 | Rocky Mountain Eye Center | Insider misuse | Healthcare | CO, US | — | VCDB |
| 2015-01-01 | Saint Agnes Health Care Inc. | Malware | Healthcare | MD, US | 25k records | VCDB |
| 2015-01-01 | Sault Area Hospital | Insider misuse | Healthcare | CA | 300 records | VCDB |
| 2015-01-01 | Serum Institute | Error / misconfiguration | Healthcare | DK | 5.0M records | VCDB |
| 2015-01-01 | Silverberg Surgical and Medical Group | Error / misconfiguration | Healthcare | CA, US | 857 records | VCDB |
| 2015-01-01 | Siobhan S. Dunnavant, M.D. | Insider misuse | Healthcare | VA, US | 1,500 records | VCDB |
| 2015-01-01 | Soldiers' Memorial Hospital | Insider misuse | Healthcare | CA | 52 records | VCDB |
| 2015-01-01 | Soldiers' Memorial Hospital | Insider misuse | Healthcare | CA | 13 records | VCDB |
| 2015-01-01 | South Bend Medical Foundation | Hacking / intrusion | Healthcare | IN, US | — | VCDB |
| 2015-01-01 | South West Yorkshire Partnership | Error / misconfiguration | Healthcare | GB | 1 records | VCDB |
| 2015-01-01 | Southern District Health Board | Error / misconfiguration | Healthcare | NZ | 60 records | VCDB |
| 2015-01-01 | Southern District Health Board | Insider misuse | Healthcare | NZ | — | VCDB |
| 2015-01-01 | Southern District Health Board | Error / misconfiguration | Healthcare | NZ | 60 records | VCDB |
| 2015-01-01 | Springfield Regional Medical Center | Error / misconfiguration | Healthcare | IL, 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 2026-10-14 22:00 UTC.