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. Transportation4
  9. Technology4
  10. Accommodation & Food3
  11. Administrative3
  12. Finance & Insurance2
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
Transportation4

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
2020-05-01CVS PharmacyTheft or lossRetailUS—VCDB
2020-05-01ChatbooksHacking / intrusionAdministrativeUT, US—VCDB
2020-05-01Colorado Department of Labor and EmploymentError / misconfigurationPublic AdministrationCO, US—VCDB
2020-05-01Dr. Kristin Tarbert Plastic Surgery OfficesHacking / intrusionHealthcareWA, US22k recordsVCDB
2020-05-01EduCBAHacking / intrusionEducationIN—VCDB
2020-05-01FreseniusRansomwareHealthcareNO—VCDB
2020-05-01Indonesian Education and Cultural MinistryHacking / intrusionEducationID1.3M recordsVCDB
2020-05-01JioError / misconfigurationInformationIN—VCDB
2020-05-01MathwaysHacking / intrusionInformationPA, US25.0M recordsVCDB
2020-05-01MobiFriends SolutionsHacking / intrusionInformationES3.5M recordsVCDB
2020-05-01NHS OrkneyError / misconfigurationHealthcareGB51 recordsVCDB
2020-05-01North Bay Parry Sound District Health UnitError / misconfigurationPublic AdministrationCA—VCDB
2020-05-01South East Coast AmbulanceError / misconfigurationHealthcareGB—VCDB
2020-05-01Zimbabwe PoliceInsider misusePublic AdministrationZW—VCDB
2020-04-30Salinas Valley Memorial Healthcare SystemHacking / intrusionHealthcareCA, US—VCDB
2020-04-23National Payments CorporationError / misconfigurationFinance & InsuranceIN-MH, IN7.3M recordsVCDB
2020-04-22Bank of America Corp. Error / misconfigurationFinance & InsuranceSC, US—VCDB
2020-04-21Parkview Medical CenterRansomwareHealthcareCO, US—VCDB
2020-04-20Genworth FinancialHacking / intrusionFinance & InsuranceUS1,600 recordsVCDB
2020-04-17Pinnacle Clinical ResearchHacking / intrusionHealthcareTX, US—VCDB
2020-04-17Tokopedia tokopedia.comData breach (cause not stated)——71.4M accountsHIBP
2020-04-16Singapore Ministry of HealthInsider misusePublic AdministrationSG—VCDB
2020-04-158BeltsError / misconfigurationEducationES-MD, ES150k recordsVCDB
2020-04-15Oakland CountyError / misconfigurationPublic AdministrationMI, US—VCDB
2020-04-13Aptoide aptoide.comData breach (cause not stated)——20.0M accountsHIBP
2020-04-12NaturaError / misconfigurationRetailBR-SP, BR290k recordsVCDB
2020-04-11Magellan HealthRansomwareHealthcareUS—VCDB
2020-04-08Vianet vianet.com.npData breach (cause not stated)——94k accountsHIBP
2020-04-06Children's Hospital of ColoradoHacking / intrusionHealthcareCO, US2,554 recordsVCDB
2020-04-03PAAY LLCError / misconfigurationProfessional ServicesNY, US2.5M recordsVCDB
2020-04-03Welsh NHSError / misconfigurationPublic AdministrationGB13k recordsVCDB
2020-04-02HomeRefill homerefill.com.brData breach (cause not stated)——187k accountsHIBP
2020-04-02Kent Commercial ServicesRansomwareAdministrativeGB—VCDB
2020-04-02OGUsers (2020 breach) ogusers.comData breach (cause not stated)——263k accountsHIBP
2020-04-0110x GenomicsRansomwareProfessional ServicesCA, US—VCDB
2020-04-01Alberta Health ServicesError / misconfigurationHealthcareCA—VCDB
2020-04-01Benefit Recovery Specialists Inc RansomwareFinance & InsuranceUS275k recordsVCDB
2020-04-01C-Planet IT SolutionsError / misconfigurationProfessional ServicesMT337k recordsVCDB
2020-04-01Carillon at Belleview StationTheft or lossHealthcareCO, US1 recordsVCDB
2020-04-01CivicSmartRansomwareOther ServicesWI, US—VCDB
2020-04-01Holland America Cruise LinesError / misconfigurationTransportationCA—VCDB
2020-04-01Huiying MedicalHacking / intrusionHealthcareCN—VCDB
2020-04-01Istituto nazionale della previdenza socialeError / misconfigurationPublic AdministrationIT-62, IT—VCDB
2020-04-01MaropostError / misconfigurationProfessional ServicesCA10k recordsVCDB
2020-04-01Monroe CountyMalwarePublic AdministrationFL, US—VCDB
2020-04-01Netherlands Ministry of HealthError / misconfigurationPublic AdministrationNL200 recordsVCDB
2020-04-01NintendoHacking / intrusionManufacturingJP-26, JP160k recordsVCDB
2020-04-01Oakland Unified School DistrictError / misconfigurationEducationCA, US—VCDB
2020-04-01SCUF GamingError / misconfigurationManufacturingGA, US1.1M recordsVCDB
2020-04-01SeaChangeRansomwareInformationWA, 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 2026-10-16 11:19 UTC.