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
616
last 12 months, every source
People in US health breaches
70.4M
475 breaches reported to HHS
Material incidents, US listed firms
23
SEC 8-K Item 1.05, 12 months
Accounts in new breach records
522.5M
126 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 sectorHealthcare752 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. Healthcare752
  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
Healthcare68461241
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

Clear

3,216 incidents match, newest first.

DateOrganisationType of attackSectorWhereAffectedSource
2013-01-01Healthcare For Women IncHacking / intrusionHealthcareMA, US—VCDB
2013-01-01Heyman HospiceCareTheft or lossHealthcareGA, US—VCDB
2013-01-01Hilton Head Island HospiceInsider misuseHealthcareSC, US3 recordsVCDB
2013-01-01Hong Kong Prevention AssociationInsider misuseHealthcareHK360k recordsVCDB
2013-01-01Hospice of North IdahoTheft or lossHealthcareID, US441 recordsVCDB
2013-01-01Hospital for Special SurgeryTheft or lossHealthcareNY, US537 recordsVCDB
2013-01-01Hutt HospitalInsider misuseHealthcareNZ1 recordsVCDB
2013-01-01Incyte CorporationInsider misuseHealthcareDE, US—VCDB
2013-01-01Indian BioResource Information NetworkHacking / intrusionHealthcareIN—VCDB
2013-01-01Injury Rehab Specialists of Lou., PLLCPhishing / social engineeringHealthcareKY, US—VCDB
2013-01-01Inova Health SystemError / misconfigurationHealthcareVA, US—VCDB
2013-01-01Inova Health SystemError / misconfigurationHealthcareVA, US—VCDB
2013-01-01Inova Health SystemError / misconfigurationHealthcareDC, US—VCDB
2013-01-01Inspira Medical Center VInelandTheft or lossHealthcareNJ, US—VCDB
2013-01-01JOHNS HOPKINSInsider misuseHealthcareMD, US—VCDB
2013-01-01Jackson Health SystemError / misconfigurationHealthcareFL, US1,407 recordsVCDB
2013-01-01Jackson Health SystemError / misconfigurationHealthcareFL, US1,407 recordsVCDB
2013-01-01Janna Benkelman LPC, LLCTheft or lossHealthcareCO, US—VCDB
2013-01-01Johns Hopkins MedicalInsider misuseHealthcareMD, US250 recordsVCDB
2013-01-01Jonathan M. Wainwright Memorial VA Medical CenterError / misconfigurationHealthcareWA, US1,519 recordsVCDB
2013-01-01Kelly Plaza Dental CenterError / misconfigurationHealthcareMI, US—VCDB
2013-01-01LabMD, Inc.UnknownHealthcareGA, US9,000 recordsVCDB
2013-01-01LabMD, Inc.Insider misuseHealthcareGA, US9,300 recordsVCDB
2013-01-01LabMD, Inc.UnknownHealthcareGA, US—VCDB
2013-01-01Lakeshore Mental Health InstituteError / misconfigurationHealthcareTN, US—VCDB
2013-01-01Leading Edge PhysiotherapyTheft or lossHealthcareAlberta, CA—VCDB
2013-01-01Lee D. Pollan, DMD, PCTheft or lossHealthcareNY, US19k recordsVCDB
2013-01-01Leicestershire Partnership NHS TrustError / misconfigurationHealthcareGB150 recordsVCDB
2013-01-01LewisGale Regional Health SystemInsider misuseHealthcareTN, US440 recordsVCDB
2013-01-01LifeLabsTheft or lossHealthcareCA16k recordsVCDB
2013-01-01Long Beach Memorial Medical CenterError / misconfigurationHealthcareCA, US2,864 recordsVCDB
2013-01-01Lubbock Cardiology ClinicHacking / intrusionHealthcareTX, US1,400 recordsVCDB
2013-01-01Lucile Packard Children's Hospital at StanfordTheft or lossHealthcareCA, US13k recordsVCDB
2013-01-01Lutheran Social Services of South Central PennsylvaniaMalwareHealthcarePA, US—VCDB
2013-01-01Maine Medical CenterError / misconfigurationHealthcareME, US1,920 recordsVCDB
2013-01-01McGowan Institute for Regenerative MedicineHacking / intrusionHealthcarePA, US847 recordsVCDB
2013-01-01MedStar Good Samaritan Nursing CenterTheft or lossHealthcareMD, US318 recordsVCDB
2013-01-01Medical Management Health and Rehab LLCPhishing / social engineeringHealthcareGA, US13 recordsVCDB
2013-01-01Metro East health careError / misconfigurationHealthcareIL, US800 recordsVCDB
2013-01-01Montfort HospitalError / misconfigurationHealthcareCA25k recordsVCDB
2013-01-01Mt. Sinai Medical Center of Florida, Inc.Insider misuseHealthcareFL, US—VCDB
2013-01-01Newcastle NHS Foundation TrustInsider misuseHealthcareGB—VCDB
2013-01-01North Jersey Developmental CenterInsider misuseHealthcareUS50 recordsVCDB
2013-01-01Northern Inyo HospitalInsider misuseHealthcareCA, US—VCDB
2013-01-01Office of Dr. Sandra Bujanda-WagnerError / misconfigurationHealthcareCO, US—VCDB
2013-01-01Oklahoma Behavioral Health RehabilitationInsider misuseHealthcareOK, US—VCDB
2013-01-01Orlando HealthHacking / intrusionHealthcareFL, US—VCDB
2013-01-01Palm Garden Nursing HomeInsider misuseHealthcareFL, US13 recordsVCDB
2013-01-01PathwaysError / misconfigurationHealthcareNZ65 recordsVCDB
2013-01-01Presbyterian Anesthesia AssociatesHacking / intrusionHealthcareNC, US10k 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 2026-10-15 09:38 UTC.