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: 70.5M; 477 breaches reported to HHS
Material incidents, US listed firms: 21; SEC 8-K Item 1.05, 12 months
Accounts in new breach records: 504.9M; 124 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 sectorHealthcare756 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 / intrusion799
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 / intrusion799
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 / intrusion799
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	687	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

11,849 incidents, newest first.

Date	Organisation	Type of attack	Sector	Where	Affected	Source
2018-04-26	Macy's	Hacking / intrusion	Retail	US	—	VCDB
2018-04-23	Notre Dame de Namur University	Hacking / intrusion	Education	OR, US	1 records	VCDB
2018-04-22	NameTests.com	Error / misconfiguration	Information	Unknown	—	VCDB
2018-04-21	Scott Credit Union	Theft or loss	Finance & Insurance	US-IL, US	—	VCDB
2018-04-20	ComplyRight	Hacking / intrusion	Professional Services	FL, US	7,600 records	VCDB
2018-04-17	Southwestern Eye Center	Error / misconfiguration	Healthcare	AZ, US	667 records	VCDB
2018-04-11	International Mission Board	Hacking / intrusion	Other Services	US	—	VCDB
2018-04-09	eHealth Saskatchewan	Insider misuse	Healthcare	SK, CA	10 records	VCDB
2018-04-03	NorthStar Anesthesia	Hacking / intrusion	Healthcare	TX, US	—	VCDB
2018-04-03	Pennsylvania Department of Corrections	Hacking / intrusion	Public Administration	PA, US	14k records	VCDB
2018-04-02	Pemiblanc pemiblanc.com	Data breach (cause not stated)	—	—	111.0M accounts	HIBP
2018-04-01	Advanced Law Enforcement Rapid Response Training	Error / misconfiguration	Public Administration	TX, US	114k records	VCDB
2018-04-01	AerServ aerserv.com	Data breach (cause not stated)	—	—	66k accounts	HIBP
2018-04-01	Alasks Division of Public Assistance	Malware	Healthcare	AK, US	500 records	VCDB
2018-04-01	Artsy artsy.net	Data breach (cause not stated)	—	—	1.1M accounts	HIBP
2018-04-01	Chegg	Hacking / intrusion	Retail	CA, US	40.0M records	VCDB
2018-04-01	Cree, Inc	Insider misuse	Manufacturing	NC, US	32k records	VCDB
2018-04-01	Emuparadise emuparadise.me	Data breach (cause not stated)	—	—	1.1M accounts	HIBP
2018-04-01	Gadsden High School	Hacking / intrusion	Education	NM, US	—	VCDB
2018-04-01	Hornor, Townsend & Kent	Theft or loss	Finance & Insurance	PA, US	—	VCDB
2018-04-01	Leominster School Disctrict	Ransomware	Education	MA, US	—	VCDB
2018-03-31	Wendy's wendys.com.ph	Data breach (cause not stated)	—	—	52k accounts	HIBP
2018-03-30	BancorpSouth Bank	Theft or loss	Finance & Insurance	MS, US	—	VCDB
2018-03-30	Confluence Health	Hacking / intrusion	Healthcare	WA, US	—	VCDB
2018-03-30	John A Moran Eye Center	Theft or loss	Healthcare	UT, Unknown	607 records	VCDB
2018-03-29	Energy Services Group	Hacking / intrusion	Information	MA, US	—	VCDB
2018-03-29	MedEvolve	Error / misconfiguration	Professional Services	AR, US	—	VCDB
2018-03-26	North Colonie Central School District (NY)	Error / misconfiguration	Education	NY, US	—	VCDB
2018-03-24	Lloyds and Natwest Banks	Theft or loss	Finance & Insurance	GB	—	VCDB
2018-03-19	Bestialitysextaboo bestialitysextaboo.com	Data breach (cause not stated)	—	—	3,204 accounts	HIBP
2018-03-15	Collins Foods	Phishing / social engineering	Accommodation & Food	AU-QLD, AU	—	VCDB
2018-03-15	University Medical Center Health System, UMC Physicians	Phishing / social engineering	Healthcare	TX, US	18k records	VCDB
2018-03-14	Los Angeles County 211 Services	Error / misconfiguration	Healthcare	CA, US	—	VCDB
2018-03-12	Zero1	Error / misconfiguration	Information	SG-05, SG	292 records	VCDB
2018-03-07	Israeli Defense Force	Error / misconfiguration	Public Administration	IL	—	VCDB
2018-03-04	SK Institute of Medical Sciences	Theft or loss	Healthcare	IN	—	VCDB
2018-03-01	Brazil Central Bank	Error / misconfiguration	Finance & Insurance	BR	120.0M records	VCDB
2018-03-01	Cathay Pacific	Hacking / intrusion	Transportation	HK	9.5M records	VCDB
2018-03-01	Google	Error / misconfiguration	Information	CA, US	500k records	VCDB
2018-03-01	Hillsview Academy	Error / misconfiguration	Education	GB	100 records	VCDB
2018-03-01	Sunspire Health	Hacking / intrusion	Healthcare	NJ, US	—	VCDB
2018-03-01	The National Lottery	Hacking / intrusion	Public Administration	GB	150 records	VCDB
2018-03-01	UnityPoint Health	Phishing / social engineering	Healthcare	IA, US	1.4M records	VCDB
2018-03-01	University of Alberta	Insider misuse	Education	CA	700 records	VCDB
2018-02-29	Penn Community Bank	Theft or loss	Finance & Insurance	PA, US	—	VCDB
2018-02-28	EyeEm eyeem.com	Data breach (cause not stated)	—	—	19.6M accounts	HIBP
2018-02-28	Scenic Bluffs Community Health Center	Hacking / intrusion	Healthcare	WI, US	2,889 records	VCDB
2018-02-24	Eastern Bank	Theft or loss	Finance & Insurance	TX, US	—	VCDB
2018-02-24	Zeal Credit Union	Theft or loss	Finance & Insurance	MI, US	—	VCDB
2018-02-22	Independent Accountant	Ransomware	Professional Services	IN	—	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 2026-10-17 02:00 UTC.