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
2014-01-01Community Memorial HospitalError / misconfigurationHealthcareWI, US—VCDB
2014-01-01Compassionate Care, Inc.Theft or lossHealthcareIL, US1 recordsVCDB
2014-01-01Complete Medical HomecareInsider misuseHealthcareKS, US—VCDB
2014-01-01ConcentraError / misconfigurationHealthcareTX, US—VCDB
2014-01-01Cone HealthError / misconfigurationHealthcareNC, US2,076 recordsVCDB
2014-01-01Coordinated HealthTheft or lossHealthcarePA, US14k recordsVCDB
2014-01-01Corvallis ClinicTheft or lossHealthcareOR, US—VCDB
2014-01-01Cover OregonError / misconfigurationHealthcareOR, US2 recordsVCDB
2014-01-01Cozby Germany HospitalInsider misuseHealthcareTX, US15 recordsVCDB
2014-01-01D.W. McMillan HospitalInsider misuseHealthcareAL, US37 recordsVCDB
2014-01-01David Digiallorenzo DMDHacking / intrusionHealthcarePA, US11k recordsVCDB
2014-01-01Dental Arts GroupInsider misuseHealthcareVA, US—VCDB
2014-01-01Dr. Axel VelezTheft or lossHealthcarePR2,800 recordsVCDB
2014-01-01Dr. Nisar A. QuraishiTheft or lossHealthcareNJ, US20k recordsVCDB
2014-01-01ENT Partners of TexasTheft or lossHealthcareTX, US789 recordsVCDB
2014-01-01Early Learning CoalitionInsider misuseHealthcareFL, US177 recordsVCDB
2014-01-01Empowerment Non-Emergency Medical Transportation, Inc.Insider misuseHealthcareIN, US—VCDB
2014-01-01Epsom and St Helier Hospitals NHS TrustTheft or lossHealthcareGB300 recordsVCDB
2014-01-01Essentia HealthError / misconfigurationHealthcareMN, US430 recordsVCDB
2014-01-01Family Medical CenterInsider misuseHealthcareGA, US—VCDB
2014-01-01Gastroenterology ConsultantsPhishing / social engineeringHealthcareCA, US2,000 recordsVCDB
2014-01-01Harley Medical GroupHacking / intrusionHealthcareGB480k recordsVCDB
2014-01-01Health PEITheft or lossHealthcareCA—VCDB
2014-01-01Health Sciences CentreTheft or lossHealthcareCA322 recordsVCDB
2014-01-01HealthTexas Provider NetworkHacking / intrusionHealthcareTX, US2,742 recordsVCDB
2014-01-01Hearth of HendersonvilleInsider misuseHealthcareTn, US5 recordsVCDB
2014-01-01Hospital Auxilio MutuoError / misconfigurationHealthcareUnknown—VCDB
2014-01-01Humber River HospitalInsider misuseHealthcareCA1 recordsVCDB
2014-01-01Island HealthError / misconfigurationHealthcareCA, US—VCDB
2014-01-01James A. Haley VA Medical CenterTheft or lossHealthcareFL, US34 recordsVCDB
2014-01-01James Paton Memorial HospitalError / misconfigurationHealthcareCA52 recordsVCDB
2014-01-01Jefferson Medical AssociatesError / misconfigurationHealthcareMS, US—VCDB
2014-01-01Jersey City Medical CenterError / misconfigurationHealthcareNJ, US—VCDB
2014-01-01Kettering Health NetworkInsider misuseHealthcareOH, US2 recordsVCDB
2014-01-01Lawrence Melrose Medical Electronic RecordInsider misuseHealthcareMA, US2 recordsVCDB
2014-01-01Marian Regional Medical CenterError / misconfigurationHealthcareCA, US—VCDB
2014-01-01Martin Army Community HospitalInsider misuseHealthcareGA, US1,000 recordsVCDB
2014-01-01Medical Services of AmericaInsider misuseHealthcareFL, US8 recordsVCDB
2014-01-01Midwest Orthopaedics at RushUnknownHealthcareIL, US1,256 recordsVCDB
2014-01-01Midwest Womens Healthcare SpecialistsError / misconfigurationHealthcareMO, US1,500 recordsVCDB
2014-01-01Midwest Womens Healthcare SpecialistsError / misconfigurationHealthcareMO, US—VCDB
2014-01-01Mission City Community NetworkTheft or lossHealthcareCA, US7,800 recordsVCDB
2014-01-01Mount Sinai HospitalInsider misuseHealthcareCA1 recordsVCDB
2014-01-01Mount Sinai Medical CenterInsider misuseHealthcareCA—VCDB
2014-01-01N.C. Behavioral Health and Counseling ServicesInsider misuseHealthcareNC, US56 recordsVCDB
2014-01-01NHS TrustInsider misuseHealthcareGB47.0M recordsVCDB
2014-01-01NOVA Chiropractic & Rehab CenterError / misconfigurationHealthcareVA, US5,534 recordsVCDB
2014-01-01Nebraska Medical CenterInsider misuseHealthcareNE, US1 recordsVCDB
2014-01-01North Bay Regional Health CentreInsider misuseHealthcareCA5,800 recordsVCDB
2014-01-01North Lincoln County Community Health Center ClinicTheft or lossHealthcareOR, US1,000 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 03:12 UTC.