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
70.4M
474 breaches reported to HHS
Material incidents, US listed firms
22
SEC 8-K Item 1.05, 12 months
Accounts in new breach records
521.9M
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 sectorHealthcare747 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 disclosureDouble CounterData breach (cause not stated) · 4 Oct 2026 · HIBP

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. Healthcare747
  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
Healthcare68060241
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 (29 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
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
Radiology Associates of Richmond · Healthcare21 Jul 2025 – 21 May 2026Hacking / intrusionHHS

6All incidents

Clear

438 incidents match, newest first.

DateOrganisationType of attackSectorWhereAffectedSource
2020-10-10Seyfarth Shaw Law FirmRansomwareProfessional ServicesIL, US—VCDB
2020-10-03Software AGRansomwareProfessional ServicesDE—VCDB
2020-10-01Nitro PDF makerHacking / intrusionProfessional ServicesCA, US1.8M recordsVCDB
2020-08-31Unnamed organisationError / misconfigurationProfessional ServicesBG1.9M recordsVCDB
2020-08-14One WorkplaceRansomwareProfessional ServicesOR, US—VCDB
2020-07-12Adit, Inc.Error / misconfigurationProfessional ServicesTX, US—VCDB
2020-06-03Arbiter SportsRansomwareProfessional ServicesUT, US—VCDB
2020-05-05Big World TechnologyHacking / intrusionProfessional ServicesAU—VCDB
2020-05-01 SercoError / misconfigurationProfessional ServicesGB300 recordsVCDB
2020-04-03PAAY LLCError / misconfigurationProfessional ServicesNY, US2.5M recordsVCDB
2020-04-0110x GenomicsRansomwareProfessional ServicesCA, US—VCDB
2020-04-01C-Planet IT SolutionsError / misconfigurationProfessional ServicesMT337k recordsVCDB
2020-04-01MaropostError / misconfigurationProfessional ServicesCA10k recordsVCDB
2020-04-01Wuhan Institute of VirologyHacking / intrusionProfessional ServicesCN—VCDB
2020-03-23Hammersmith Medicines ResearchRansomwareProfessional ServicesGB—VCDB
2020-03-10Corporate Benefit MarketingHacking / intrusionProfessional ServicesCA, US—VCDB
2020-03-09AST LLCHacking / intrusionProfessional ServicesNJ, US200 recordsVCDB
2020-02-01Unnamed organisationError / misconfigurationProfessional ServicesUnknown8.0M recordsVCDB
2020-01-01Brooklyn Defender ServicesHacking / intrusionProfessional ServicesNY, US—VCDB
2020-01-01CivicSmartRansomwareProfessional ServicesWI, US—VCDB
2020-01-01FriendemicError / misconfigurationProfessional ServicesUT, US2.7M recordsVCDB
2020-01-01Front RushError / misconfigurationProfessional ServicesPA, US700k recordsVCDB
2020-01-01HavenlyHacking / intrusionProfessional ServicesCO, US3.0M recordsVCDB
2020-01-01PayMyParkRansomwareProfessional ServicesNZ—VCDB
2020-01-01Prestige softwareError / misconfigurationProfessional ServicesES—VCDB
2020-01-01Software MacKievError / misconfigurationProfessional ServicesMA, US60k recordsVCDB
2020-01-01nCourtError / misconfigurationProfessional ServicesGA, US1.4M recordsVCDB
2019-12-02Medical Diagnostic Laboratories RansomwareProfessional ServicesNJ, US—VCDB
2019-11-12Conor SolutionsError / misconfigurationProfessional ServicesZA1.0M recordsVCDB
2019-10-28KickBack AppsError / misconfigurationProfessional ServicesNY, US138.0M recordsVCDB
2019-10-19Adobe, Inc.Error / misconfigurationProfessional ServicesCA, US7.5M recordsVCDB
2019-10-16People Data Labs (PDL) Error / misconfigurationProfessional ServicesCA, US4.0B recordsVCDB
2019-10-01LiveRampHacking / intrusionProfessional ServicesCA, US1 recordsVCDB
2019-09-01Yves RocherError / misconfigurationProfessional ServicesFR2.5M recordsVCDB
2019-07-21neoclinical Error / misconfigurationProfessional ServicesAU37k recordsVCDB
2019-07-16iNSYNQRansomwareProfessional ServicesUS-WA, US—VCDB
2019-06-02X Social MediaError / misconfigurationProfessional ServicesUS—VCDB
2019-06-01Bulgarian National Revenue AgencyHacking / intrusionProfessional ServicesBG5.0M recordsVCDB
2019-05-01ChtrboxError / misconfigurationProfessional ServicesIN49.0M recordsVCDB
2019-05-01IfficientError / misconfigurationProfessional ServicesCO, US8.0M recordsVCDB
2019-04-01CitycompHacking / intrusionProfessional ServicesBW, DE313k recordsVCDB
2019-01-01ApexSMSError / misconfigurationProfessional ServicesUS80.0M recordsVCDB
2019-01-01CHS ConsultingError / misconfigurationProfessional ServicesGB—VCDB
2019-01-01Fut FantasticoError / misconfigurationProfessional ServicesMX150k recordsVCDB
2019-01-01GatehubHacking / intrusionProfessional ServicesGB2.2M recordsVCDB
2019-01-01LaddersError / misconfigurationProfessional ServicesNY, US13.7M recordsVCDB
2019-01-01Liberty Income TaxError / misconfigurationProfessional ServicesTX, US—VCDB
2019-01-01MumsnetError / misconfigurationProfessional ServicesGB—VCDB
2019-01-01OnlinevitalusError / misconfigurationProfessional ServicesES752k recordsVCDB
2019-01-01SupremaError / misconfigurationProfessional ServicesGB27.8M 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 2026-10-13 16:14 UTC.