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
2021-01-01VeritasRansomwareProfessional ServicesIL180k recordsVCDB
2021-01-01Vermont Department of LaborError / misconfigurationPublic AdministrationVT, US80k recordsVCDB
2021-01-01VirginActiveHacking / intrusionEntertainmentZA—VCDB
2021-01-01WalmartError / misconfigurationRetailCA—VCDB
2021-01-01Windows93 / Myspace93 windows93.netData breach (cause not stated)——46k accountsHIBP
2021-01-01Wyoming Department of HealthError / misconfigurationPublic AdministrationWY, US164k recordsVCDB
2020-12-24CallXError / misconfigurationAdministrativeUS114k recordsVCDB
2020-12-24MEO meoair.comData breach (cause not stated)——8,227 accountsHIBP
2020-12-24University of California universityofcalifornia.eduData breach (cause not stated)——547k accountsHIBP
2020-12-21NetGalley netgalley.comData breach (cause not stated)——1.4M accountsHIBP
2020-12-20MMG Fusion mmgfusion.comData breach (cause not stated)——2.7M accountsHIBP
2020-12-19DriveSure drivesure.comData breach (cause not stated)——3.7M accountsHIBP
2020-12-18Roblox Developer Conference (2023) rdcglobal.comData breach (cause not stated)——3,943 accountsHIBP
2020-12-17Travel Oklahoma travelok.comData breach (cause not stated)——637k accountsHIBP
2020-12-16People's Energy peoplesenergy.co.ukData breach (cause not stated)——359k accountsHIBP
2020-12-12Capital Economics capitaleconomics.comData breach (cause not stated)——264k accountsHIBP
2020-12-11HondaError / misconfigurationRetailJP26k recordsVCDB
2020-12-09Elara CaringHacking / intrusionHealthcareTX, US100k recordsVCDB
2020-12-02GamingMonk gamingmonk.comData breach (cause not stated)——655k accountsHIBP
2020-12-01GetSchooled Error / misconfigurationEducationUS930k recordsVCDB
2020-12-01MyFreeCamsHacking / intrusionInformationUS2.0M recordsVCDB
2020-12-01PracticeFirstRansomwareProfessional ServicesNY, US1.2M recordsVCDB
2020-12-01Q Link WirelessError / misconfigurationInformationFL, US—VCDB
2020-12-01RandstadRansomwareAdministrativeNL—VCDB
2020-12-01Sistema Único de SaúdeError / misconfigurationPublic AdministrationBR243.0M recordsVCDB
2020-12-01SolarWindsMalwareInformationTX, US—VCDB
2020-11-27Unnamed organisationInsider misuseHealthcareBR, BR16.0M recordsVCDB
2020-11-24Netgain TechnologyRansomwareInformationMN, US—VCDB
2020-11-23IIMJobsHacking / intrusionAdministrativeIN1.4M recordsVCDB
2020-11-23Wright Global GraphicsRansomwareManufacturingNC, US—VCDB
2020-11-09Cedar Springs Hospital Error / misconfigurationHealthcareCO, US—VCDB
2020-11-04Cit0day cit0day.inData breach (cause not stated)——226.9M accountsHIBP
2020-11-01AmericoldRansomwareTransportationUS—VCDB
2020-11-01BumbleError / misconfigurationAdministrativeUS100.0M recordsVCDB
2020-11-01DeFiHacking / intrusionInformationUS—VCDB
2020-10-30Saskatchewan Polytechnic RansomwareEducationSK, CA—VCDB
2020-10-29RedMartUnknownRetailSG1.1M recordsVCDB
2020-10-28Wongnai wongnai.comData breach (cause not stated)——3.9M accountsHIBP
2020-10-19Playbook playbook.vcData breach (cause not stated)——51k accountsHIBP
2020-10-19Société de transport de Montréal RansomwareTransportationQC, CA—VCDB
2020-10-14bigbasket bigbasket.comData breach (cause not stated)——24.5M accountsHIBP
2020-10-13Thingiverse thingiverse.comData breach (cause not stated)——228k accountsHIBP
2020-10-12Animal Jam animaljam.comData breach (cause not stated)——7.1M accountsHIBP
2020-10-11Dental Care AllianceHacking / intrusionHealthcareFL, US1.0M recordsVCDB
2020-10-10Seyfarth Shaw Law FirmRansomwareProfessional ServicesIL, US—VCDB
2020-10-09Sonoma Valley HospitalRansomwareHealthcareCA, US—VCDB
2020-10-09University of South Carolina School of LawError / misconfigurationEducationSC, US—VCDB
2020-10-08Famm famm.usData breach (cause not stated)——535k accountsHIBP
2020-10-08LimeVPN limevpn.comData breach (cause not stated)——23k accountsHIBP
2020-10-07Hall County, GARansomwarePublic AdministrationGA, 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 07:14 UTC.