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

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. 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
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
2018-07-01New South Wales GovernmentError / misconfigurationPublic AdministrationAU400 recordsVCDB
2018-07-01Newmark Knight FrankInsider misuseReal EstateNY, US—VCDB
2018-07-01Oklahoma Department of Human ServicesError / misconfigurationPublic AdministrationOK, US—VCDB
2018-07-01Pacific Radiology’s Dunedin HospitalError / misconfigurationHealthcareNZ26 recordsVCDB
2018-07-01Panola National BankTheft or lossFinance & InsuranceTX, US—VCDB
2018-07-01Provider OneError / misconfigurationUtilitiesDE20 recordsVCDB
2018-07-01RobloxHacking / intrusionInformationUS—VCDB
2018-07-01RoboCentError / misconfigurationProfessional ServicesVA, US2,584 recordsVCDB
2018-07-01TelstraError / misconfigurationInformationGB18 recordsVCDB
2018-07-01Thompson Health's M.M. Ewing Continuing Care CenterInsider misuseHealthcareNY, US1 recordsVCDB
2018-07-01Tuscon Medical CenterError / misconfigurationHealthcareAZ, US1,800 recordsVCDB
2018-07-01Unidentified Helsinki Contraception Clinic (No Longer in Business)Error / misconfigurationHealthcareFI25 recordsVCDB
2018-07-01VodaphoneError / misconfigurationInformationNZ—VCDB
2018-07-01Zimbabwe Electoral CommissionHacking / intrusionPublic AdministrationZW—VCDB
2018-07-01Zoomcar zoomcar.comData breach (cause not stated)——3.6M accountsHIBP
2018-07-01ZoomcarUnknownReal EstateIN3.5M recordsVCDB
2018-06-30Fetal Diagnostic Institute of the PacificRansomwareHealthcareHI, US41k recordsVCDB
2018-06-30Unidentified HospitalTheft or lossHealthcareFR—VCDB
2018-06-28Gentoo GithubHacking / intrusionProfessional ServicesUS—VCDB
2018-06-28Middletown School DistrictRansomwareEducationCT, US—VCDB
2018-06-28South Eastern Regional College Phishing / social engineeringEducationGB—VCDB
2018-06-27SingHealthMalwareFinance & InsuranceSG1.5M recordsVCDB
2018-06-25Light's Hope lightshope.orgData breach (cause not stated)——30k accountsHIBP
2018-06-23Kerry GroupInsider misuseManufacturingIE—VCDB
2018-06-22Innate TherapeuticsInsider misuseManufacturingNY, US—VCDB
2018-06-20Cleveland UK Police Error / misconfigurationPublic AdministrationGB—VCDB
2018-06-20Pennsylvania Department of HealthHacking / intrusionPublic AdministrationPA, US—VCDB
2018-06-19Euskirchen PrisonError / misconfigurationPublic AdministrationDE80 recordsVCDB
2018-06-18Utah Valley Eye CenterHacking / intrusionHealthcareUT, US20k recordsVCDB
2018-06-17Mortal Online mortalonline.comData breach (cause not stated)——607k accountsHIBP
2018-06-17Purdue UniversityError / misconfigurationEducationIN, US27k recordsVCDB
2018-06-15Amicus HealthError / misconfigurationHealthcareGB258 recordsVCDB
2018-06-15Southern College of OptometryHacking / intrusionEducationTN, US1 recordsVCDB
2018-06-14Israeli Defense ForceError / misconfigurationPublic AdministrationIL—VCDB
2018-06-14Reddit Hacking / intrusionInformationUnknown—VCDB
2018-06-13Anna Sanjivini PharmacyError / misconfigurationRetailIN—VCDB
2018-06-13Mickey’s Convenience StoreTheft or lossRetailTX, US—VCDB
2018-06-11Susquehanna County Emergency ManagementInsider misusePublic AdministrationPA, US1 recordsVCDB
2018-06-08InterAct of Michigan, Inc.Hacking / intrusionHealthcareMI, US1,291 recordsVCDB
2018-06-07Estonian Citizens (via Estonian Cybercrime Bureau)Credential compilation (no single victim)——655k accountsHIBP
2018-06-07University of Pittsburgh Medical CenterHacking / intrusionHealthcarePA, US790 recordsVCDB
2018-06-06AcFun Hacking / intrusionInformationCN—VCDB
2018-06-04SalesForceError / misconfigurationInformationUS—VCDB
2018-06-03HumanaHacking / intrusionFinance & InsuranceUS—VCDB
2018-06-01Brooke Army Medical CenterInsider misuseHealthcareTX, US50 recordsVCDB
2018-06-01Cleveland PoliceError / misconfigurationPublic AdministrationGB—VCDB
2018-06-01Connecticut Higher Education TrustHacking / intrusionEducationCT, US24 recordsVCDB
2018-06-01Cyanweb SolutionsHacking / intrusionInformationAU—VCDB
2018-06-01Exactis exactis.comData breach (cause not stated)——131.6M accountsHIBP
2018-06-01FacebookError / misconfigurationInformationUS—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 00:16 UTC.