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
612
last 12 months, every source
People in US health breaches
70.5M
476 breaches reported to HHS
Material incidents, US listed firms
21
SEC 8-K Item 1.05, 12 months
Accounts in new breach records
522.5M
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 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

3Sectors

Who the incidents hit, where the source names a sector, and how each sector was attacked.

Most affected sectorsLast 24 months. Select one to list its incidents.
  1. Healthcare754
  2. Information28
  3. Manufacturing21
  4. Professional Services19
  5. Retail18
  6. Finance, Insurance & Real Estate6
  7. Services5
  8. Technology4
  9. Transportation4
  10. Accommodation & Food3
  11. Administrative3
  12. Other Services2
Sector against type of attackIncidents per sector (rows) and attack type (columns). Darker means more.
  • In healthcare, 91% of incidents were hacking / intrusion.
Hacking / intrusionData breach (cause not stated)Unauthorised access or disclosureRansomwareTheft or lossError / misconfiguration
Healthcare68562241
Information253
Manufacturing201
Professional Services181
Retail171
Finance, Insurance & Real Estate6
Services5
Technology4

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.

By people affected
  1. 1
    Conduent Business Services LLC62.2M people
    8 Oct 2025 · Hacking / intrusion · Healthcare · HHS
  2. 2
    DentaQuest, LLC15.0M people
    16 Jul 2026 · Hacking / intrusion · Healthcare · HHS
  3. 3
    Aflac Incorporated (“Aflac”)13.9M people
    8 Aug 2025 · Hacking / intrusion · Healthcare · HHS
  4. 4
    Aesto, LLC9.5M people
    31 Jul 2026 · Hacking / intrusion · Healthcare · HHS
  5. 5
    Episource, LLC6.7M people
    6 Jun 2025 · Hacking / intrusion · Healthcare · HHS
  6. 6
    AdaptHealth, LLC4.1M people
    14 Aug 2026 · Hacking / intrusion · Healthcare · HHS
  7. 7
    Unlimited Technology Systems, LLC3.8M people
    21 Jul 2026 · Hacking / intrusion · Healthcare · HHS
  8. 8
    CareCloud, Inc.3.8M people
    24 Jul 2026 · Hacking / intrusion · Healthcare · HHS
By accounts exposed
  1. 1
    1win96.2M accounts
    2 Nov 2024 · Data breach (cause not stated) · HIBP
  2. 2
    Under Armour72.7M accounts
    17 Nov 2025 · Data breach (cause not stated) · HIBP
  3. 3
    Suno55.3M accounts
    25 Nov 2025 · Data breach (cause not stated) · HIBP
  4. 4
    Canadian Tire38.3M accounts
    2 Oct 2025 · Data breach (cause not stated) · HIBP
  5. 5
    Addi34.5M accounts
    25 Mar 2026 · Data breach (cause not stated) · HIBP
  6. 6
    SoundCloud29.8M accounts
    15 Dec 2025 · Data breach (cause not stated) · HIBP
  7. 7
    Speedio27.5M accounts
    24 Dec 2024 · Data breach (cause not stated) · HIBP
  8. 8
    Paidwork23.3M accounts
    29 Mar 2026 · Data breach (cause not stated) · HIBP

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.

OrganisationDisclosuresFirst – latestTypes of attackSources
Fieldtex Products, Inc. · Healthcare520 Nov 2025 – 12 Dec 2025Hacking / intrusionHHS
AltaMed Health Services Corporation · Healthcare31 Jun 2023 – 26 Feb 2026Hacking / intrusionRansomwareUnauthorised access or disclosureHHS, VCDB
United Healthcare Student Resources · Finance & Insurance31 Jun 2023 – 1 Jun 2023RansomwareVCDB
DentaQuest, LLC · Healthcare223 May 2026 – 16 Jul 2026Data breach (cause not stated)Hacking / intrusionHHS, HIBP
CarMax · Retail22 May 2025 – 24 Jan 2026Data breach (cause not stated)Hacking / intrusionHIBP, VCDB
Park Dental Partners, Inc. · Healthcare228 Aug 2026 – 7 Oct 2026Hacking / intrusionSEC 8-K
WindRose Health Network · Healthcare227 Jan 2026 – 16 Sept 2026Hacking / intrusionHHS
AdaptHealth, LLC · Healthcare227 Jun 2026 – 14 Aug 2026Hacking / intrusionHHS, SEC 8-K
CareCloud, Inc. · Healthcare224 Mar 2026 – 24 Jul 2026Hacking / intrusionHHS, SEC 8-K
Clinical Registry Solutions · Healthcare29 Apr 2026 – 12 Jun 2026Hacking / intrusionHHS, VCDB
Open Arms Care Corporation · Healthcare21 Jun 2025 – 11 Jun 2026Hacking / intrusionHHS, VCDB
Gastro Health · Healthcare222 May 2026 – 22 May 2026Hacking / intrusionHHS

6All incidents

11,847 incidents, newest first.

DateOrganisationType of attackSectorWhereAffectedSource
2021-07-09Qraved qraved.comData breach (cause not stated)——985k accountsHIBP
2021-07-07York Animal HospitalRansomwareProfessional ServicesME, US—VCDB
2021-07-06Jam Tangan jamtangan.comData breach (cause not stated)——435k accountsHIBP
2021-07-04RespawnHacking / intrusionInformationCA, US—VCDB
2021-07-01ECCIE eccie.netData breach (cause not stated)——537k accountsHIBP
2021-07-01KaseyaRansomwareInformationFL, US—VCDB
2021-06-26Short Édition short-edition.comData breach (cause not stated)——505k accountsHIBP
2021-06-20AcadeMEHacking / intrusionAdministrativeIL280k recordsVCDB
2021-06-12HeatGames heatgames.meData breach (cause not stated)——648k accountsHIBP
2021-06-08City of Freeport, MaineRansomware—ME, US—VCDB
2021-06-05Phoenix phoenixim.ddns.netData breach (cause not stated)——75k accountsHIBP
2021-06-02AMTError / misconfigurationProfessional ServicesCN6.0M recordsVCDB
2021-06-02Des Moines Area Community CollegeRansomwareEducationIA, US—VCDB
2021-06-01AMT gamesError / misconfigurationInformationCN5.6M recordsVCDB
2021-06-01Edward DonRansomwareWholesaleIL, UM—VCDB
2021-06-01Epilepsy Foundation of TexasHacking / intrusionHealthcareTX, US2,824 recordsVCDB
2021-06-01Fuji FilmRansomwareWholesaleJP—VCDB
2021-06-01START start.filmData breach (cause not stated)——7.5M accountsHIBP
2021-06-01Vicksburg Warren School DistrictRansomwareEducationMS, US—VCDB
2021-05-30Nucleus Software ExportsRansomwareInformationIN—VCDB
2021-05-28Municipality of RolleRansomware—CH5,393 recordsVCDB
2021-05-27Lotenal (National Lottery of Mexico)RansomwareEntertainmentMX—VCDB
2021-05-24Spine & Disc Medical CenterRansomwareHealthcareAZ, US—VCDB
2021-05-23IndiaMART indiamart.comData breach (cause not stated)——20.2M accountsHIBP
2021-05-22Paragon Cheats paragoncheats.comData breach (cause not stated)——188k accountsHIBP
2021-05-21CTARS ctars.com.auData breach (cause not stated)——12k accountsHIBP
2021-05-18Visalia UnifiedRansomwareEducationCA, US—VCDB
2021-05-17MaximusHacking / intrusionProfessional ServicesOH, US334k recordsVCDB
2021-05-13EpikHacking / intrusionInformationUS—VCDB
2021-05-03GigabyteRansomwareManufacturingTW—VCDB
2021-05-01Colonial PipelineRansomwareTransportationGA, US—VCDB
2021-05-01Colonial PipelineRansomwareTransportationGA, US—VCDB
2021-05-01MicrosoftError / misconfigurationProfessional ServicesCA, US38.0M recordsVCDB
2021-05-01Sierra CollegeRansomwareEducationCA, US—VCDB
2021-04-30Technische Universität BerlinRansomwareEducationDE—VCDB
2021-04-23SirHurt sirhurt.netData breach (cause not stated)——91k accountsHIBP
2021-04-23TegutHacking / intrusionRetailDE—VCDB
2021-04-21 Centre François BaclesseRansomwareHealthcareFR—VCDB
2021-04-16Atmeltomo atmeltomo.comData breach (cause not stated)——580k accountsHIBP
2021-04-11OGUsers (2021 breach) ogusers.comData breach (cause not stated)——348k accountsHIBP
2021-04-09City of Morières-lès-Avignon RansomwarePublic AdministrationFR—VCDB
2021-04-08LinkedIn Scraped Data (2021) linkedin.comData breach (cause not stated)——125.7M accountsHIBP
2021-04-08Phone House España phonehouse.esData breach (cause not stated)——5.2M accountsHIBP
2021-04-08Upstox upstox.comData breach (cause not stated)——111k accountsHIBP
2021-04-06SlideTeam slideteam.netData breach (cause not stated)——1.5M accountsHIBP
2021-04-05Douglas Elliman Property ManagementHacking / intrusionReal EstateNY, US—VCDB
2021-04-01 Service Employees International Union 775 Benefits Group Hacking / intrusionOther ServicesWA, US—VCDB
2021-04-01Buffalo Public SchoolsRansomwareEducationNY, US—VCDB
2021-04-01Debt-INRansomwareAdministrativeZA140.0M recordsVCDB
2021-04-01Groupe ReorevRansomwareProfessional ServicesFR—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 2026-10-16 04:20 UTC.