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
Technology	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
2016-08-02	Radio Station	Hacking / intrusion	Information	US	—	VCDB
2016-08-02	Speedy's Mart Exxon	Theft or loss	Retail	VA, US	—	VCDB
2016-08-01	Armenian national security ministry	Hacking / intrusion	Public Administration	AM	—	VCDB
2016-08-01	Australian Department of Health	Error / misconfiguration	Public Administration	AU	2.9M records	VCDB
2016-08-01	Avenue Living	Insider misuse	Real Estate	CA	30 records	VCDB
2016-08-01	Christians Against Poverty	Hacking / intrusion	Finance & Insurance	GB	—	VCDB
2016-08-01	Cloudy Nights and Astronomics	Hacking / intrusion	Retail	US-OK, US	—	VCDB
2016-08-01	DNC	Hacking / intrusion	Public Administration	US	200 records	VCDB
2016-08-01	Department of Veterans Affairs	Theft or loss	Public Administration	DC, US	—	VCDB
2016-08-01	Desert Care clinic	Ransomware	Healthcare	AZ, US	500 records	VCDB
2016-08-01	Equian	Phishing / social engineering	Finance & Insurance	IN, US	1,400 records	VCDB
2016-08-01	GSM Hosting gsmhosting.com	Data breach (cause not stated)	—	—	2.6M accounts	HIBP
2016-08-01	GTAGaming gtagaming.com	Data breach (cause not stated)	—	—	197k accounts	HIBP
2016-08-01	Integrity Transitional Hospital	Hacking / intrusion	Healthcare	TX, US	30k records	VCDB
2016-08-01	Keck Medical Center of USC	Ransomware	Healthcare	CA, US	—	VCDB
2016-08-01	KidsPeace	Error / misconfiguration	Healthcare	US	—	VCDB
2016-08-01	Martin’s Mini-Mart	Theft or loss	Retail	Vermont, US	—	VCDB
2016-08-01	McDonald's Corp	Insider misuse	Accommodation & Food	IN, US	100 records	VCDB
2016-08-01	New England Federal Credit Union	Theft or loss	Finance & Insurance	MA, US	—	VCDB
2016-08-01	Pratap S. Kurra, M.D.	Error / misconfiguration	Healthcare	OR, US	2,029 records	VCDB
2016-08-01	Roehl Transport	Insider misuse	Transportation	WI, US	—	VCDB
2016-08-01	Sheraton	Insider misuse	Accommodation & Food	TN, US	—	VCDB
2016-08-01	Susan M. Hughes Center	Ransomware	Healthcare	US	11k records	VCDB
2016-08-01	Thomasville Eye Center	Insider misuse	Healthcare	GA, US	11k records	VCDB
2016-08-01	Unknown	Hacking / intrusion	Professional Services	GB	—	VCDB
2016-08-01	Unnamed organisation	Insider misuse	Finance & Insurance	US	—	VCDB
2016-08-01	gas station	Theft or loss	Retail	CA	—	VCDB
2016-07-31	DLH.Net	Hacking / intrusion	Information	DE	3.3M records	VCDB
2016-07-31	DLH.net dlh.net	Data breach (cause not stated)	—	—	3.3M accounts	HIBP
2016-07-31	Roblox roblox.com	Data breach (cause not stated)	—	—	52k accounts	HIBP
2016-07-30	Geisinger Health Plan	Error / misconfiguration	Finance & Insurance	PA, US	2,800 records	VCDB
2016-07-29	Altamont Internal Medicine & Pediatrics	Error / misconfiguration	Healthcare	US	2 records	VCDB
2016-07-29	Saskatchewan Government Insurance	Insider misuse	Finance & Insurance	CA	—	VCDB
2016-07-29	University of Wisconsin Health	Error / misconfiguration	Healthcare	WI, US	6,923 records	VCDB
2016-07-28	UNC Charlotte University	Malware	Education	NC, US	50 records	VCDB
2016-07-27	McAlester Regional Health Center	Error / misconfiguration	Healthcare	OK, US	1 records	VCDB
2016-07-26	Bloomfield Township Board of Trustees	Insider misuse	Public Administration	MI, US	—	VCDB
2016-07-26	Factory RV Surplus	Error / misconfiguration	Retail	IN, US	8,500 records	VCDB
2016-07-25	John E Gonzalez	Theft or loss	Healthcare	CA, US	1,025 records	VCDB
2016-07-25	Oracle Corp	Malware	Information	CA, US	1.0M records	VCDB
2016-07-25	US Army	Hacking / intrusion	Public Administration	US	2,437 records	VCDB
2016-07-22	Decatur Health Systems	Theft or loss	Healthcare	KS, US	707 records	VCDB
2016-07-22	Glassdoor	Error / misconfiguration	Information	CA, US	600k records	VCDB
2016-07-21	Nordic Consulting Partners, Inc.	Error / misconfiguration	Professional Services	WI, US	—	VCDB
2016-07-20	Lees Road Post Office	Theft or loss	Public Administration	GB	—	VCDB
2016-07-19	AKP Emails akparti.org.tr	Data breach (cause not stated)	—	—	917k accounts	HIBP
2016-07-19	BRIAN D. HALEVIE-GOLDMAN,	Theft or loss	Healthcare	CA, US	2,000 records	VCDB
2016-07-18	U.S. Healthwork	Theft or loss	Healthcare	CA, US	1,400 records	VCDB
2016-07-16	Kings University College	Error / misconfiguration	Education	CA	451 records	VCDB
2016-07-15	College Hill Health Center	Error / misconfiguration	Healthcare	WY, 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 2026-10-17 22:04 UTC.