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: 618; last 12 months, every source
People in US health breaches: 70.5M; 477 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 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

2Trends

The last 24 months, dated when the incident happened where the source says, otherwise when it was reported.

Disclosed incidents per month, by type of attackStacked: each band is one type; the top edge is the month's total.

Hacking / intrusion797
Data breach (cause not stated)151
Unauthorised access or disclosure62
Ransomware9
Credential compilation (no single victim)5
Infostealer logs5
Theft or loss4
Error / misconfiguration1

Hacking / intrusion797
Data breach (cause not stated)151
Unauthorised access or disclosure62
Ransomware9
Credential compilation (no single victim)5
Infostealer logs5
Theft or loss4
Error / misconfiguration1

Hacking / intrusion797
Data breach (cause not stated)151
Unauthorised access or disclosure62
Ransomware9
Credential compilation (no single victim)5
Infostealer logs5
Theft or loss4
Error / misconfiguration1

People affected per monthBreaches counted in people (US health breaches and coded incidents).

By type of attack

Hacking / intrusion77%
Data breach (cause not stated)15%
Unauthorised access or disclosure6%
Ransomware1%
Credential compilation (no single victim)0%
Infostealer logs0%
Theft or loss0%
Error / misconfiguration0%

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.

Sector against type of attackIncidents per sector (rows) and attack type (columns). Darker means more.

In healthcare, 91% of incidents were hacking / intrusion.

	Hacking / intrusion	Unauthorised access or disclosure	Ransomware	Theft or loss	Error / misconfiguration
Healthcare	685	62	2	4	1
Information	25		3
Manufacturing	20		1
Professional Services	18		1
Retail	17		1
Finance, Insurance & Real Estate	6
Services	5
Transportation	4

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
Conduent Business Services LLC62.2M people
8 Oct 2025 · Hacking / intrusion · Healthcare · HHS
2
DentaQuest, LLC15.0M people
16 Jul 2026 · Hacking / intrusion · Healthcare · HHS
3
Aflac Incorporated (“Aflac”)13.9M people
8 Aug 2025 · Hacking / intrusion · Healthcare · HHS
4
Aesto, LLC9.5M people
31 Jul 2026 · Hacking / intrusion · Healthcare · HHS
5
Episource, LLC6.7M people
6 Jun 2025 · Hacking / intrusion · Healthcare · HHS
6
AdaptHealth, LLC4.1M people
14 Aug 2026 · Hacking / intrusion · Healthcare · HHS
7
Unlimited Technology Systems, LLC3.8M people
21 Jul 2026 · Hacking / intrusion · Healthcare · HHS
8
CareCloud, Inc.3.8M people
24 Jul 2026 · Hacking / intrusion · Healthcare · HHS

By accounts exposed

1
1win96.2M accounts
2 Nov 2024 · Data breach (cause not stated) · HIBP
2
Under Armour72.7M accounts
17 Nov 2025 · Data breach (cause not stated) · HIBP
3
Suno55.3M accounts
25 Nov 2025 · Data breach (cause not stated) · HIBP
4
Canadian Tire38.3M accounts
2 Oct 2025 · Data breach (cause not stated) · HIBP
5
Addi34.5M accounts
25 Mar 2026 · Data breach (cause not stated) · HIBP
6
SoundCloud29.8M accounts
15 Dec 2025 · Data breach (cause not stated) · HIBP
7
Speedio27.5M accounts
24 Dec 2024 · Data breach (cause not stated) · HIBP
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.

Organisation	Disclosures	First – latest	Types of attack	Sources
Fieldtex Products, Inc. · Healthcare	5	20 Nov 2025 – 12 Dec 2025	Hacking / intrusion	HHS
AltaMed Health Services Corporation · Healthcare	3	1 Jun 2023 – 26 Feb 2026	Hacking / intrusionRansomwareUnauthorised access or disclosure	HHS, VCDB
United Healthcare Student Resources · Finance & Insurance	3	1 Jun 2023 – 1 Jun 2023	Ransomware	VCDB
DentaQuest, LLC · Healthcare	2	23 May 2026 – 16 Jul 2026	Data breach (cause not stated)Hacking / intrusion	HHS, HIBP
CarMax · Retail	2	2 May 2025 – 24 Jan 2026	Data breach (cause not stated)Hacking / intrusion	HIBP, VCDB
Park Dental Partners, Inc. · Healthcare	2	28 Aug 2026 – 7 Oct 2026	Hacking / intrusion	SEC 8-K
WindRose Health Network · Healthcare	2	27 Jan 2026 – 16 Sept 2026	Hacking / intrusion	HHS
AdaptHealth, LLC · Healthcare	2	27 Jun 2026 – 14 Aug 2026	Hacking / intrusion	HHS, SEC 8-K
CareCloud, Inc. · Healthcare	2	24 Mar 2026 – 24 Jul 2026	Hacking / intrusion	HHS, SEC 8-K
Clinical Registry Solutions · Healthcare	2	9 Apr 2026 – 12 Jun 2026	Hacking / intrusion	HHS, VCDB
Open Arms Care Corporation · Healthcare	2	1 Jun 2025 – 11 Jun 2026	Hacking / intrusion	HHS, VCDB
Gastro Health · Healthcare	2	22 May 2026 – 22 May 2026	Hacking / intrusion	HHS

6All incidents

11,847 incidents, newest first.

Date	Organisation	Type of attack	Sector	Where	Affected	Source
2023-12-12	InflateVids tube.inflatevids.xyz	Data breach (cause not stated)	—	—	13k accounts	HIBP
2023-12-01	General Informatics LLC	Hacking / intrusion	Professional Services	LA, US	—	VCDB
2023-12-01	Welhof welhof.com	Data breach (cause not stated)	—	—	107k accounts	HIBP
2023-11-16	Zadig & Voltaire zadig-et-voltaire.com	Data breach (cause not stated)	—	—	587k accounts	HIBP
2023-11-14	KitchenPal kitchenpalapp.com	Data breach (cause not stated)	—	—	99k accounts	HIBP
2023-11-11	Blooms Today bloomstoday.com	Data breach (cause not stated)	—	—	3.2M accounts	HIBP
2023-11-08	Chess.com (2023) chess.com	Data breach (cause not stated)	—	—	1.3M accounts	HIBP
2023-11-02	Claxton-Hepburn Medical Center	Hacking / intrusion	Healthcare	NY, US	757 people	HHS
2023-10-18	Toumei toumei.co.jp	Data breach (cause not stated)	—	—	77k accounts	HIBP
2023-10-12	Premier Health Partners and wholly owned covered entities listed in description section below	Hacking / intrusion	Healthcare	OH, US	11k people	HHS
2023-10-01	Facebook Marketplace facebook.com	Data breach (cause not stated)	—	—	77k accounts	HIBP
2023-09-28	Shadow shadow.tech	Data breach (cause not stated)	—	—	543k accounts	HIBP
2023-09-20	Naz.API	Credential compilation (no single victim)	—	—	70.8M accounts	HIBP
2023-09-09	Sphero sphero.com	Data breach (cause not stated)	—	—	832k accounts	HIBP
2023-09-01	Unnamed North American medical research institution	Malware	Healthcare	Unknown	—	VCDB
2023-08-30	Market Moveis marketmoveis.pt	Data breach (cause not stated)	—	—	28k accounts	HIBP
2023-08-29	Qakbot	Credential compilation (no single victim)	—	—	6.4M accounts	HIBP
2023-08-09	PlayCyberGames playcybergames.com	Data breach (cause not stated)	—	—	3.7M accounts	HIBP
2023-08-02	MagicDuel magicduel.com	Data breach (cause not stated)	—	—	138k accounts	HIBP
2023-07-09	Rightbiz rightdev.co.uk	Data breach (cause not stated)	—	—	65k accounts	HIBP
2023-07-06	Fédération Francaise de Rugby ffr.fr	Data breach (cause not stated)	—	—	282k accounts	HIBP
2023-06-20	Dymocks dymocks.com.au	Data breach (cause not stated)	—	—	836k accounts	HIBP
2023-06-17	BreachForums Clone breachforums.vc	Data breach (cause not stated)	—	—	4,204 accounts	HIBP
2023-06-01	19817	Ransomware	Public Administration	US	—	VCDB
2023-06-01	19817	Ransomware	Public Administration	US	—	VCDB
2023-06-01	ACCESSLEX INSTITUTE	Ransomware	Education	PA, US	—	VCDB
2023-06-01	ADAMS STATE UNIVERSITY	Ransomware	Education	CO, US	—	VCDB
2023-06-01	ADELPHI UNIVERSITY	Ransomware	Education	NY, US	—	VCDB
2023-06-01	ALAMANCE COMMUNITY COLLEGE	Ransomware	Education	NC, US	—	VCDB
2023-06-01	ALBERTUS MAGNUS COLLEGE	Ransomware	Education	CT, US	—	VCDB
2023-06-01	ALFRED UNIVERSITY	Ransomware	Education	NY, US	—	VCDB
2023-06-01	ALLEN COUNTY COMMUNITY COLLEGE	Ransomware	Education	KS, US	—	VCDB
2023-06-01	ALLEN HIGH SCHOOL	Ransomware	Education	TX, US	—	VCDB
2023-06-01	ALLIANT INTERNATIONAL UNIVERSITY	Ransomware	Education	CA, US	—	VCDB
2023-06-01	AMERICAN CAREER COLLEGE	Ransomware	Education	CA, US	—	VCDB
2023-06-01	AMERICAN COLLEGE OF HEALTHCARE SCIENCES	Ransomware	Education	OR, US	—	VCDB
2023-06-01	AMERICAN UNIVERSITY OF HEALTHCARE SCIENCES	Ransomware	Education	CA, US	—	VCDB
2023-06-01	ANDREW COLLEGE	Ransomware	Education	GA, US	—	VCDB
2023-06-01	ANNE ARUNDEL COMMUNITY COLLEGE	Ransomware	Education	MD, US	—	VCDB
2023-06-01	ANTIOCH UNIVERSITY	Ransomware	Education	CA, US	—	VCDB
2023-06-01	ARCADIA UNIVERSITY	Ransomware	Education	PA, US	—	VCDB
2023-06-01	ARIZONA STATE UNIVERSITY	Ransomware	Education	AZ, US	—	VCDB
2023-06-01	ARIZONA WESTERN COLLEGE	Ransomware	Education	AZ, US	—	VCDB
2023-06-01	ASCENDIUM	Ransomware	Education	WI, US	—	VCDB
2023-06-01	ASPEN UNIVERSITY	Ransomware	Education	AZ, US	—	VCDB
2023-06-01	ATLANTIC CAPE COMMUNITY COLLEGE	Ransomware	Education	NJ, US	—	VCDB
2023-06-01	AUBURN UNIVERSITY	Ransomware	Education	AL, US	—	VCDB
2023-06-01	Abilene Christian University	Ransomware	Education	TX, US	—	VCDB
2023-06-01	Allegheny County	Ransomware	Public Administration	PA, US	968k records	VCDB
2023-06-01	Allegiant Air	Ransomware	Transportation	NV, 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 2026-10-15 11:50 UTC.