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
- 70.5M
- 477 breaches reported to HHS
- Material incidents, US listed firms
- 21
- SEC 8-K Item 1.05, 12 months
- Accounts in new breach records
- 504.9M
- 124 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 sectorHealthcare756 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 / intrusion799
- 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 / intrusion799
- 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 / intrusion799
- 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 | 687 | 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
11,849 incidents, newest first.
| Date | Organisation | Type of attack | Sector | Where | Affected | Source |
|---|---|---|---|---|---|---|
| 2017-04-14 | Chris O'Brien Lighthouse (hospital) | Insider misuse | Healthcare | AU | 700 records | VCDB |
| 2017-04-14 | Cove Family and Sports Medicine | Ransomware | Healthcare | AL, US | 4,300 records | VCDB |
| 2017-04-08 | City of Dallas Office of Emergency Management | Hacking / intrusion | Public Administration | TX, US | — | VCDB |
| 2017-04-08 | Southwest Community Health Center | Theft or loss | Healthcare | CT, US | — | VCDB |
| 2017-04-05 | Bahamas Water and Sewerage Corporation ‘ | Insider misuse | Administrative | BS | — | VCDB |
| 2017-04-04 | ask.com | Error / misconfiguration | Information | US | — | VCDB |
| 2017-04-01 | NSWC Federal Credit Union | Theft or loss | Finance & Insurance | VA, US | 143 records | VCDB |
| 2017-04-01 | 7-Eleven | Theft or loss | Retail | VA, US | — | VCDB |
| 2017-04-01 | Aadhaar Goverment | Error / misconfiguration | Public Administration | IN | 100.0M records | VCDB |
| 2017-04-01 | Alabama Judicial System | Error / misconfiguration | Public Administration | AL, US | — | VCDB |
| 2017-04-01 | Erie County Medical Center | Ransomware | Healthcare | NY, US | — | VCDB |
| 2017-04-01 | Gloucestershire County Council | Error / misconfiguration | Public Administration | GB | — | VCDB |
| 2017-04-01 | Louisville Hall of Justice | Theft or loss | Public Administration | KY, US | — | VCDB |
| 2017-04-01 | Midland Regional Hospital | Error / misconfiguration | Healthcare | GB | 2 records | VCDB |
| 2017-04-01 | Midland Regional Hospital | Error / misconfiguration | Healthcare | GB | 1 records | VCDB |
| 2017-04-01 | My Health Record | Error / misconfiguration | Public Administration | AU | 4.0M records | VCDB |
| 2017-04-01 | Prairie Mountain Health | Hacking / intrusion | Healthcare | CA, Unknown | 1,629 records | VCDB |
| 2017-04-01 | Saint Thomas Health | Error / misconfiguration | Healthcare | TN, US | 2,859 records | VCDB |
| 2017-04-01 | Southern Oregon University | Phishing / social engineering | Education | OR, US | — | VCDB |
| 2017-04-01 | The Neurology Foundation, Inc. | Insider misuse | Healthcare | RI, US | 13k records | VCDB |
| 2017-04-01 | UK Government | Insider misuse | Public Administration | GB | — | VCDB |
| 2017-03-29 | Dueling Network duelingnetwork.com | Data breach (cause not stated) | — | — | 6.5M accounts | HIBP |
| 2017-03-26 | Hong Kong’s Electoral Office | Theft or loss | Public Administration | HK | 3.7M records | VCDB |
| 2017-03-25 | Appartoo appartoo.com | Data breach (cause not stated) | — | — | 50k accounts | HIBP |
| 2017-03-25 | Health Now Networks healthnow.co | Data breach (cause not stated) | — | — | 322k accounts | HIBP |
| 2017-03-23 | Children’s Mercy Kansas City | Insider misuse | Healthcare | MO, US | 5,511 records | VCDB |
| 2017-03-23 | Surgical Dermatology Group | Hacking / intrusion | Healthcare | Alabama, US | — | VCDB |
| 2017-03-22 | Factual factual.com | Data breach (cause not stated) | — | — | 2.5M accounts | HIBP |
| 2017-03-21 | CoxHealth | Theft or loss | Healthcare | MO, US | 80 records | VCDB |
| 2017-03-21 | America’s Job Link Alliance | Hacking / intrusion | Administrative | KS, US | 2.2M records | VCDB |
| 2017-03-20 | Wind Tre | Error / misconfiguration | Information | IT-MI, IT | 5,118 records | VCDB |
| 2017-03-18 | Hyatt Hotels | Malware | Accommodation & Food | US | — | VCDB |
| 2017-03-16 | SunTrust | Theft or loss | Finance & Insurance | FL, US | — | VCDB |
| 2017-03-16 | Unnamed organisation | Malware | Administrative | AU | — | VCDB |
| 2017-03-14 | Master Deeds | Credential compilation (no single victim) | — | — | 2.3M accounts | HIBP |
| 2017-03-10 | Paratransit Services | Phishing / social engineering | Transportation | US | — | VCDB |
| 2017-03-09 | Ster-Kinekor sterkinekor.co.za | Data breach (cause not stated) | — | — | 1.6M accounts | HIBP |
| 2017-03-03 | Tucson Sunnyside Unified School District | Error / misconfiguration | Education | US-AZ, US | 2,000 records | VCDB |
| 2017-03-01 | ACM Global Laboratory | Insider misuse | Healthcare | NY, US | — | VCDB |
| 2017-03-01 | Arkansas Department of Human Services | Insider misuse | Public Administration | AK, US | 26k records | VCDB |
| 2017-03-01 | Beacon Health System | Insider misuse | Healthcare | IN, US | — | VCDB |
| 2017-03-01 | Bolt bolt.cd | Data breach (cause not stated) | — | — | 995k accounts | HIBP |
| 2017-03-01 | California Association of Realtors | Malware | Retail | CA, US | 1,033 records | VCDB |
| 2017-03-01 | Clearfield County Children and Youth Family Services | Error / misconfiguration | Healthcare | US | — | VCDB |
| 2017-03-01 | Colonial Gardens Alzheimer’s Special Care Center | Insider misuse | Healthcare | SC, US | — | VCDB |
| 2017-03-01 | Colorado Department of Health Care Policy and Financing | Error / misconfiguration | Public Administration | CO, US | 822 records | VCDB |
| 2017-03-01 | Cook County Health and Hospitals System | Error / misconfiguration | Healthcare | IL, US | 727 records | VCDB |
| 2017-03-01 | Denver Public Schools | Hacking / intrusion | Education | US-CO, US | 30 records | VCDB |
| 2017-03-01 | Dracore Data Sciences | Error / misconfiguration | Information | ZA | 2.2M records | VCDB |
| 2017-03-01 | Fylde Council | Error / misconfiguration | Public Administration | GB | — | 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 2026-10-17 11:59 UTC.