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: 612; last 12 months, every source
People in US health breaches: 70.5M; 476 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 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
Infostealer logs5
Credential compilation (no single victim)5
Theft or loss4
Error / misconfiguration1

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

Hacking / intrusion797
Data breach (cause not stated)151
Unauthorised access or disclosure62
Ransomware9
Infostealer logs5
Credential compilation (no single victim)5
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%
Infostealer logs0%
Credential compilation (no single victim)0%
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
2021-04-01	Home Depot	Error / misconfiguration	Retail	GA, US	974k records	VCDB
2021-04-01	ParkMobile	Hacking / intrusion	Transportation	US	21.0M records	VCDB
2021-04-01	Technological University Dublin	Ransomware	Education	IE	—	VCDB
2021-04-01	United Nations	Hacking / intrusion	Public Administration	US	—	VCDB
2021-03-29	municipality of Konya	Hacking / intrusion	—	TR	1.0M records	VCDB
2021-03-28	Hedgeye	Insider misuse	Professional Services	CT, US	—	VCDB
2021-03-28	Rochester Community Technical College	Error / misconfiguration	Education	NY, US	—	VCDB
2021-03-25	KinoKong kinokong.org	Data breach (cause not stated)	—	—	818k accounts	HIBP
2021-03-24	Domino's India dominos.co.in	Data breach (cause not stated)	—	—	22.5M accounts	HIBP
2021-03-22	MangaDex mangadex.org	Data breach (cause not stated)	—	—	3.0M accounts	HIBP
2021-03-21	Maharashtra Industrial Development Corporation	Ransomware	Public Administration	IN	—	VCDB
2021-03-21	ParkMobile parkmobile.io	Data breach (cause not stated)	—	—	20.9M accounts	HIBP
2021-03-18	Carding Mafia (March 2021) cardmafia.cc	Data breach (cause not stated)	—	—	298k accounts	HIBP
2021-03-16	Luxottica luxottica.com	Data breach (cause not stated)	—	—	77.1M accounts	HIBP
2021-03-15	IDC Games idcgames.com	Data breach (cause not stated)	—	—	4.0M accounts	HIBP
2021-03-14	Descomplica descomplica.com.br	Data breach (cause not stated)	—	—	4.8M accounts	HIBP
2021-03-08	ClearBalance	Hacking / intrusion	Finance & Insurance	CA, US	210k records	VCDB
2021-03-08	Liker liker.com	Data breach (cause not stated)	—	—	465k accounts	HIBP
2021-03-08	WeLeakInfo weleakinfo.com	Data breach (cause not stated)	—	—	12k accounts	HIBP
2021-03-01	Adecco Group	Hacking / intrusion	Administrative	SE	5.0M records	VCDB
2021-03-01	Heart of Texas Community Health Center	Insider misuse	Healthcare	TX, US	—	VCDB
2021-03-01	Honeywell International Inc	Malware	Professional Services	NC, US	—	VCDB
2021-03-01	MCG Health	Hacking / intrusion	Healthcare	WA, US	1.1M records	VCDB
2021-03-01	Pembroke College	Error / misconfiguration	Education	GB	—	VCDB
2021-03-01	RDC	Hacking / intrusion	Administrative	NL	7.3M records	VCDB
2021-03-01	Swarmarket	Hacking / intrusion	Information	Unknown	60k records	VCDB
2021-03-01	Tether	Ransomware	Finance & Insurance	US	—	VCDB
2021-03-01	Upstox	Hacking / intrusion	Finance & Insurance	IN	—	VCDB
2021-02-26	Gab gab.com	Data breach (cause not stated)	—	—	67k accounts	HIBP
2021-02-25	Achievement Center of LECOM Health (ACLH)	Hacking / intrusion	Healthcare	PA, US	—	VCDB
2021-02-25	SuperVPN & GeckoVPN	Credential compilation (no single victim)	—	—	20.3M accounts	HIBP
2021-02-23	Zee Entertainment Enterprises	Error / misconfiguration	Information	IN	9.0M records	VCDB
2021-02-22	Ticketcounter ticketcounter.nl	Data breach (cause not stated)	—	—	1.9M accounts	HIBP
2021-02-19	Health Aid of Ohio	Hacking / intrusion	Real Estate	OH, US	—	VCDB
2021-02-18	Gemplex gemplex.tv	Data breach (cause not stated)	—	—	4.6M accounts	HIBP
2021-02-12	NurseryCam nurserycam.co.uk	Data breach (cause not stated)	—	—	11k accounts	HIBP
2021-02-10	Penn Foundation	Ransomware	Healthcare	PA, US	—	VCDB
2021-02-10	Trade Me	Error / misconfiguration	Retail	NZ	1,400 records	VCDB
2021-02-08	Wolfe Eye Clinic	Ransomware	Healthcare	IA, US	500k records	VCDB
2021-02-05	CityBee citybee.lt	Data breach (cause not stated)	—	—	110k accounts	HIBP
2021-02-05	Simon Fraiser University	Hacking / intrusion	Education	CA	—	VCDB
2021-02-04	BabyChakra	Error / misconfiguration	Professional Services	IN	5.5M records	VCDB
2021-02-01	Campbell Conroy & O'Neil	Ransomware	Professional Services	MA, US	—	VCDB
2021-02-01	CaptureRX	Ransomware	Professional Services	TX, US	1.7M records	VCDB
2021-02-01	Discount Car and Truck Rentals	Ransomware	Real Estate	CA	—	VCDB
2021-02-01	KomplettFritid komplettfritid.no	Data breach (cause not stated)	—	—	139k accounts	HIBP
2021-02-01	Shorewood School District	Error / misconfiguration	Education	WI, US	—	VCDB
2021-01-31	Raychat raychat.ir	Data breach (cause not stated)	—	—	939k accounts	HIBP
2021-01-29	Ducks Unlimited ducks.org	Data breach (cause not stated)	—	—	1.3M accounts	HIBP
2021-01-28	Bookchor bookchor.com	Data breach (cause not stated)	—	—	498k accounts	HIBP

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 05:17 UTC.