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
614
last 12 months, every source
People in US health breaches
70.5M
478 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 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

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. Healthcare756
  2. Information28
  3. Manufacturing21
  4. Professional Services19
  5. Retail18
  6. Finance, Insurance & Real Estate6
  7. Services5
  8. Technology4
  9. Transportation4
  10. Administrative3
  11. Accommodation & Food3
  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
Healthcare68762241
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

11,849 incidents, newest first.

DateOrganisationType of attackSectorWhereAffectedSource
2020-01-01ComcastError / misconfigurationInformationPA, US1.5B recordsVCDB
2020-01-01Decathlon Error / misconfigurationRetailES123.0M recordsVCDB
2020-01-01Dr.Martin JugenburgInsider misuseHealthcareCA—VCDB
2020-01-01DreamhostError / misconfigurationInformationUS851.0M recordsVCDB
2020-01-01DrizlyHacking / intrusionRetailMA, US2.5M recordsVCDB
2020-01-01Dutch Ministry for Health, Wellness and SportError / misconfigurationPublic AdministrationNL6.9M recordsVCDB
2020-01-01Eerie Community CollegeRansomwareEducationNY, US—VCDB
2020-01-01Erlanger Health SystemError / misconfigurationHealthcareTN, US4,938 recordsVCDB
2020-01-01Escola DigitalError / misconfigurationEducationBR75k recordsVCDB
2020-01-01Estee LauderError / misconfigurationManufacturingNY, US440.3M recordsVCDB
2020-01-01Filmai.in filmai.inData breach (cause not stated)——646k accountsHIBP
2020-01-01FriendemicError / misconfigurationProfessional ServicesUT, US2.7M recordsVCDB
2020-01-01Front RushError / misconfigurationProfessional ServicesPA, US700k recordsVCDB
2020-01-01General Election CommissionHacking / intrusionPublic AdministrationID2.2M recordsVCDB
2020-01-01Georgia MLSUnknownReal EstateUS-GA, US—VCDB
2020-01-01Georgian GovernmentHacking / intrusion—Unknown4.9M recordsVCDB
2020-01-01Guns.comHacking / intrusionRetailMN, US400k recordsVCDB
2020-01-01HavenlyHacking / intrusionProfessional ServicesCO, US3.0M recordsVCDB
2020-01-01Health ShareTheft or lossFinance & InsuranceOR, US—VCDB
2020-01-01Key RingError / misconfigurationInformationUS-TX, US14.0M recordsVCDB
2020-01-01KinoappError / misconfigurationInformationFR42.0M recordsVCDB
2020-01-01Lake County Behavioral Health Services ClinicTheft or lossHealthcareUS—VCDB
2020-01-01LedgerError / misconfigurationFinance & InsuranceFR1 recordsVCDB
2020-01-01Lombard MetalsPhishing / social engineeringManufacturingPA, US—VCDB
2020-01-01MailfireError / misconfigurationInformationCY100k recordsVCDB
2020-01-01MarriottHacking / intrusionAccommodation & FoodMD, US5.2M recordsVCDB
2020-01-01MaxLinear IncRansomwareManufacturingCA, US—VCDB
2020-01-01MedicaidInsider misusePublic AdministrationPA, US—VCDB
2020-01-01Mexican Economy MinistryHacking / intrusionPublic AdministrationMX—VCDB
2020-01-01MyTopDogError / misconfigurationEducationZA800k recordsVCDB
2020-01-01Nameless MalwareCredential compilation (no single victim)——1.1M accountsHIBP
2020-01-01Nashville Plastic Surgery Institute, LLCRansomwareHealthcareTN, US—VCDB
2020-01-01National Highways Authority of IndiaRansomwarePublic AdministrationIN—VCDB
2020-01-01NetsentinalHacking / intrusionInformationTX, US—VCDB
2020-01-01Northwestern MemorialInsider misuseHealthcareIL, US—VCDB
2020-01-01Nova Scotia Workers Compensation Appeals TribunalError / misconfigurationPublic AdministrationCA—VCDB
2020-01-01Okoo Error / misconfigurationEducationKZ7,200 recordsVCDB
2020-01-01PayMyParkRansomwareProfessional ServicesNZ—VCDB
2020-01-01Pell CityHacking / intrusionPublic AdministrationAL, US—VCDB
2020-01-01PepperstoneHacking / intrusionFinance & InsuranceAU—VCDB
2020-01-01Playground Sessions Error / misconfigurationEducationNY, US4,100 recordsVCDB
2020-01-01PlutoTVHacking / intrusionInformationCA, US3.2M recordsVCDB
2020-01-01Prestige softwareError / misconfigurationProfessional ServicesES—VCDB
2020-01-01Quantum Imaging and Therapeutic AssociatesInsider misuseHealthcarePA, US1 recordsVCDB
2020-01-01R1 RCMRansomwareFinance & InsuranceIL, US—VCDB
2020-01-01Religare Health InsuranceHacking / intrusionFinance & InsuranceIN3.0M recordsVCDB
2020-01-01Software MacKievError / misconfigurationProfessional ServicesMA, US60k recordsVCDB
2020-01-01South Yorkshire PoliceError / misconfigurationPublic AdministrationGB8.6M recordsVCDB
2020-01-01Square PandaError / misconfigurationEducationCA, US15k recordsVCDB
2020-01-01Star TribunalHacking / intrusionInformationMN, US1.0M recordsVCDB

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 14:27 UTC.