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
- 613
- last 12 months, every source
- People in US health breaches
- 70.4M
- 473 breaches reported to HHS
- Material incidents, US listed firms
- 23
- SEC 8-K Item 1.05, 12 months
- Accounts in new breach records
- 521.9M
- 125 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 sectorHealthcare748 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 / intrusion793
- Data breach (cause not stated)150
- Unauthorised access or disclosure60
- Ransomware9
- Credential compilation (no single victim)5
- Infostealer logs5
- Theft or loss4
- Error / misconfiguration1
- Hacking / intrusion793
- Data breach (cause not stated)150
- Unauthorised access or disclosure60
- Ransomware9
- Credential compilation (no single victim)5
- Infostealer logs5
- Theft or loss4
- Error / misconfiguration1
- Hacking / intrusion793
- Data breach (cause not stated)150
- Unauthorised access or disclosure60
- 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 | 681 | 60 | 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
3,212 incidents match, newest first.
| Date | Organisation | Type of attack | Sector | Where | Affected | Source |
|---|---|---|---|---|---|---|
| 2018-01-01 | Unidentified Dental Practice | Phishing / social engineering | Healthcare | SC, UM | — | VCDB |
| 2018-01-01 | Unidentified Hospital | Phishing / social engineering | Healthcare | MI, US | — | VCDB |
| 2017-12-16 | Dr. Ruben U. Carvajal, MD | Hacking / intrusion | Healthcare | NY, US | 3,775 records | VCDB |
| 2017-12-12 | Stanislaus County | Ransomware | Healthcare | CA, US | — | VCDB |
| 2017-12-01 | Children's Mercy Hospital | Hacking / intrusion | Healthcare | MO, US | 63k records | VCDB |
| 2017-12-01 | Women’s Health Consultants | Error / misconfiguration | Healthcare | PA, US | — | VCDB |
| 2017-11-16 | St. Lawrence Psychiatric Center | Theft or loss | Healthcare | NY, US | 2 records | VCDB |
| 2017-11-01 | Scottish Appropriate Adult Network | Error / misconfiguration | Healthcare | GB | 50 records | VCDB |
| 2017-11-01 | Calvary Public Hospital Bruce | Error / misconfiguration | Healthcare | AU | 3 records | VCDB |
| 2017-11-01 | Colorado Mental Health Institute at Pueblo | Hacking / intrusion | Healthcare | CO, US | 650 records | VCDB |
| 2017-11-01 | Malaysian Dental Association | Hacking / intrusion | Healthcare | MY | — | VCDB |
| 2017-11-01 | Wellington Hospital | Error / misconfiguration | Healthcare | NZ | 6 records | VCDB |
| 2017-10-25 | UAB Medicine | Error / misconfiguration | Healthcare | AL, US | 652 records | VCDB |
| 2017-10-05 | Dudley Group NHS Foundation Trust | Theft or loss | Healthcare | GB | — | VCDB |
| 2017-10-03 | CCRM Minneapolis | Ransomware | Healthcare | MN, US | 3,300 records | VCDB |
| 2017-10-03 | Henry Ford Health System | Hacking / intrusion | Healthcare | MI, US | 18k records | VCDB |
| 2017-10-02 | Sinai Health System | Hacking / intrusion | Healthcare | IL, US | 11k records | VCDB |
| 2017-10-01 | Austin Manual Therapy Associates | Hacking / intrusion | Healthcare | TX, US | 1,750 records | VCDB |
| 2017-10-01 | Baber Psychiatric Group | Error / misconfiguration | Healthcare | IL, US | 11k records | VCDB |
| 2017-10-01 | Baptist Health | Hacking / intrusion | Healthcare | TX, US | 881 records | VCDB |
| 2017-10-01 | Carolina Oncology Specialists | Unknown | Healthcare | NC, US | 1,551 records | VCDB |
| 2017-10-01 | Gloucestershire Hospital | Error / misconfiguration | Healthcare | GB-GLS, GB | 56 records | VCDB |
| 2017-10-01 | Hay River Regional Health Centre | Error / misconfiguration | Healthcare | CA | 41 records | VCDB |
| 2017-10-01 | London Bridge Plastic Surgery Clinic | Hacking / intrusion | Healthcare | GB | — | VCDB |
| 2017-10-01 | Midland Regional Hospital | Error / misconfiguration | Healthcare | GB | 1 records | VCDB |
| 2017-10-01 | Windward Family Therapy Center | Error / misconfiguration | Healthcare | HI, US | 50 records | VCDB |
| 2017-09-28 | Rocky Mountain Health Care Services | Theft or loss | Healthcare | CO, US | 909 records | VCDB |
| 2017-09-23 | Ball Memorial Hospital | Error / misconfiguration | Healthcare | IN, US | 1,399 records | VCDB |
| 2017-09-22 | Decatur County General Hospital | Malware | Healthcare | TX, US | — | VCDB |
| 2017-09-13 | Roger Williams Medical Center | Theft or loss | Healthcare | RI, US | 60 records | VCDB |
| 2017-09-13 | Sports Medicine and Rehabilitation Therapy | Hacking / intrusion | Healthcare | MA, US | 16k records | VCDB |
| 2017-09-09 | St. Paul's Hospital | Error / misconfiguration | Healthcare | CA | 1 records | VCDB |
| 2017-09-04 | Brevard Physician Associates | Theft or loss | Healthcare | FL, US | 7,967 records | VCDB |
| 2017-09-01 | Bay Sleep Clinic | Error / misconfiguration | Healthcare | California, US | — | VCDB |
| 2017-09-01 | Garden Estates of Temple | Theft or loss | Healthcare | PA, US | 1 records | VCDB |
| 2017-09-01 | Royal Adelaide Hospital | Error / misconfiguration | Healthcare | AU | — | VCDB |
| 2017-09-01 | Sports Medicine & Rehabilitation Therapy | Hacking / intrusion | Healthcare | MA, US | 7,000 records | VCDB |
| 2017-09-01 | University of Pittsburgh Medical Center's Bedford Memorial hospital | Insider misuse | Healthcare | PA, US | 1 records | VCDB |
| 2017-09-01 | Western State Hospital | Error / misconfiguration | Healthcare | WA, US | 515 records | VCDB |
| 2017-08-15 | Home Care by Black Stone | Theft or loss | Healthcare | OH, US | — | VCDB |
| 2017-08-15 | Home Care by Black Stone | Theft or loss | Healthcare | OH, US | — | VCDB |
| 2017-08-12 | Namaste Health Care | Ransomware | Healthcare | Colorado, US | — | VCDB |
| 2017-08-09 | Kaiser Permanente | Error / misconfiguration | Healthcare | US | — | VCDB |
| 2017-08-09 | PeaceHealth Southwest Medical Center | Insider misuse | Healthcare | CA | — | VCDB |
| 2017-08-02 | Chase Brexton Health Care | Phishing / social engineering | Healthcare | MD, US | 4 records | VCDB |
| 2017-08-01 | City of Hope | Hacking / intrusion | Healthcare | US | 3,400 records | VCDB |
| 2017-08-01 | Dara Linn Cherry Orchard Hospital | Error / misconfiguration | Healthcare | GB | 1 records | VCDB |
| 2017-08-01 | Mt. Sinai Medical Center, | Theft or loss | Healthcare | FL, US | 7 records | VCDB |
| 2017-08-01 | Narmada Hospital | Insider misuse | Healthcare | IN | — | VCDB |
| 2017-08-01 | North Island medical clinic | Error / misconfiguration | Healthcare | NZ | 1,000 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 2026-10-14 09:06 UTC.