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. 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
2019-01-01Sonic JobsError / misconfigurationInformationGB-LND, GB29k recordsVCDB
2019-01-01Spotsylvania County GovernmentPhishing / social engineeringPublic AdministrationUS—VCDB
2019-01-01State of California Employment Development DepartmentError / misconfigurationPublic AdministrationCA, US300 recordsVCDB
2019-01-01SupremaError / misconfigurationProfessional ServicesGB27.8M recordsVCDB
2019-01-01Tommy Hilfiger JapanError / misconfigurationRetailJP—VCDB
2019-01-01United States Air Force Hacking / intrusionPublic AdministrationKR1.0M recordsVCDB
2019-01-01Unlimited Family Services, LLCInsider misuseHealthcareCT, US—VCDB
2019-01-01Unnamed organisationTheft or lossRetailFL, US—VCDB
2019-01-01Unnamed organisationTheft or lossRetailFL, US—VCDB
2019-01-01Unnamed organisationHacking / intrusion—Unknown200k recordsVCDB
2019-01-01Unnamed organisationError / misconfigurationFinance & InsuranceCN4.6M recordsVCDB
2019-01-01Unnamed organisationHacking / intrusionHealthcareUS-TX, US—VCDB
2019-01-01Unnamed organisationMalwareProfessional ServicesRU—VCDB
2019-01-01Unnamed organisationPhishing / social engineeringUtilitiesGB—VCDB
2019-01-01Unnamed organisationHacking / intrusion—RU50.0M recordsVCDB
2019-01-01Unnamed organisationHacking / intrusionAccommodation & FoodTH1,000 recordsVCDB
2019-01-01Unnamed organisationHacking / intrusionProfessional ServicesUS—VCDB
2019-01-01Unnamed organisationHacking / intrusionUtilitiesUS—VCDB
2019-01-01Unnamed organisationError / misconfigurationInformationCN2.0M recordsVCDB
2019-01-01Unnamed organisationError / misconfigurationFinance & InsuranceCN4.6M recordsVCDB
2019-01-01Unnamed organisationHacking / intrusionFinance & InsuranceUS—VCDB
2019-01-01Unnamed organisationError / misconfiguration—CN1.8M recordsVCDB
2019-01-01Unnamed organisationError / misconfiguration—CL14.5M recordsVCDB
2019-01-01Valero Theft or lossWholesaleTX, US—VCDB
2019-01-01Verifications IO LLCError / misconfigurationProfessional ServicesDE, US808.5M recordsVCDB
2019-01-01Veritas GeneticsUnknownHealthcareUS-MA, US—VCDB
2019-01-01Virginia State PoliceInsider misusePublic AdministrationVA, US—VCDB
2019-01-01WaystarError / misconfigurationInformationKY, US—VCDB
2019-01-01Wolcott Public SchoolsRansomwareEducationCT, US—VCDB
2018-12-31IIMJobs iimjobs.comData breach (cause not stated)——4.2M accountsHIBP
2018-12-29BannerBit bannerbit.comData breach (cause not stated)——213k accountsHIBP
2018-12-28BlankMediaGames blankmediagames.comData breach (cause not stated)——7.6M accountsHIBP
2018-12-26OGUsers (2019 breach) ogusers.comData breach (cause not stated)——161k accountsHIBP
2018-12-26Roll20 roll20.netData breach (cause not stated)——4.0M accountsHIBP
2018-12-13Ajarn ajarn.comData breach (cause not stated)——266k accountsHIBP
2018-12-13Wanelo wanelo.comData breach (cause not stated)——23.2M accountsHIBP
2018-12-11Mappery mappery.comData breach (cause not stated)——205k accountsHIBP
2018-12-07Bombuj.eu bombuj.euData breach (cause not stated)——575k accountsHIBP
2018-12-01AscensionError / misconfigurationFinance & InsuranceTX, US24.0M recordsVCDB
2018-12-01BoomojiError / misconfigurationInformationCN125.0M recordsVCDB
2018-12-01Dubsmash dubsmash.comData breach (cause not stated)——161.7M accountsHIBP
2018-12-01Fotolog fotolog.comData breach (cause not stated)——16.7M accountsHIBP
2018-12-01TivitMalwareProfessional ServicesBR-SP, BR—VCDB
2018-12-01UConn HealthPhishing / social engineeringHealthcareCT, US326k recordsVCDB
2018-12-01warby parkerHacking / intrusionRetailUS198k recordsVCDB
2018-11-30Technic technicpack.netData breach (cause not stated)——265k accountsHIBP
2018-11-16SSM HealthError / misconfigurationHealthcareMO, US301k recordsVCDB
2018-11-14Data & Leads datanleads.comData breach (cause not stated)——44.3M accountsHIBP
2018-11-12New Jersey Schools Development AuthorityError / misconfigurationPublic AdministrationUS-NJ, US230 recordsVCDB
2018-11-09Brewhouse and Kitchen Error / misconfigurationAccommodation & FoodGB17k 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 21:52 UTC.