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
2017-01-01	St. Charles Bend	Insider misuse	Healthcare	OR, US	1,000 records	VCDB
2017-01-01	St. Mary's Regional Wound Center	Error / misconfiguration	Healthcare	WV, US	1 records	VCDB
2017-01-01	SterKinekor	Hacking / intrusion	Information	NZ	1.6M records	VCDB
2017-01-01	Superion (Click2Gov) Now DBA Central Square Technologies	Hacking / intrusion	Professional Services	FL, US	—	VCDB
2017-01-01	T.J. Samson Community Hospital	Insider misuse	Healthcare	GB	—	VCDB
2017-01-01	Taco Bell	Insider misuse	Accommodation & Food	US	—	VCDB
2017-01-01	Taipei City Government	Malware	Public Administration	TW	2,000 records	VCDB
2017-01-01	Taipei City Government	Malware	Public Administration	TW	2,000 records	VCDB
2017-01-01	Tarleton Medical	Hacking / intrusion	Healthcare	CA, US	3,929 records	VCDB
2017-01-01	Tenafly High School	Hacking / intrusion	Education	NJ, US	—	VCDB
2017-01-01	Tennessee Secretary of State	Error / misconfiguration	Public Administration	TN, US	655k records	VCDB
2017-01-01	The Aesthetic and Reconstructive Breast Center LLC	Insider misuse	Healthcare	LA, US	—	VCDB
2017-01-01	The Lash Group	Insider misuse	Healthcare	TX, US	—	VCDB
2017-01-01	The University Hospitals of North Midlands NHS Trust	Insider misuse	Healthcare	GB	—	VCDB
2017-01-01	Townsend Police Department	Insider misuse	Public Administration	MA, US	1 records	VCDB
2017-01-01	Transformations Autism Treatment Center	Hacking / intrusion	Healthcare	TN, US	—	VCDB
2017-01-01	U.S. Bank	Theft or loss	Finance & Insurance	US	—	VCDB
2017-01-01	UK Government	Error / misconfiguration	Public Administration	GB	—	VCDB
2017-01-01	UPMC Susquehanna	Phishing / social engineering	Healthcare	US	1,200 records	VCDB
2017-01-01	United Nations	Error / misconfiguration	Other Services	US	—	VCDB
2017-01-01	United States Senate	Hacking / intrusion	Public Administration	US-MA, US	—	VCDB
2017-01-01	University Hospitals	Theft or loss	Healthcare	OH, US	1 records	VCDB
2017-01-01	University of Chicago Medical Center	Error / misconfiguration	Healthcare	IL, US	—	VCDB
2017-01-01	University of East Anglia	Error / misconfiguration	Education	GB	320 records	VCDB
2017-01-01	University of Maryland Faculty Physicians Inc.	Hacking / intrusion	Healthcare	MD, US	1,500 records	VCDB
2017-01-01	Unknown	Hacking / intrusion	Information	Unknown	—	VCDB
2017-01-01	Unknown	Error / misconfiguration	—	CA	—	VCDB
2017-01-01	Unnamed medical practice	Theft or loss	Healthcare	NJ, US	1,000 records	VCDB
2017-01-01	Unnamed organisation	Insider misuse	Healthcare	GA, US	—	VCDB
2017-01-01	Unnamed organisation	Error / misconfiguration	Healthcare	TX, US	28 records	VCDB
2017-01-01	Unnamed organisation	Theft or loss	—	Unknown	900 records	VCDB
2017-01-01	Unnamed organisation	Malware	Entertainment	US	—	VCDB
2017-01-01	VCU Health System	Insider misuse	Healthcare	VA, US	—	VCDB
2017-01-01	VICI Marketing LLC	Error / misconfiguration	Entertainment	FL, US	400k records	VCDB
2017-01-01	Verizon	Hacking / intrusion	Information	US	14.0M records	VCDB
2017-01-01	Vermont Department of Taxes	Insider misuse	Public Administration	VT, US	—	VCDB
2017-01-01	Victoria Department of Health and Human Services	Error / misconfiguration	Public Administration	AU	30 records	VCDB
2017-01-01	Victory Phones victoryphones.com	Data breach (cause not stated)	—	—	166k accounts	HIBP
2017-01-01	Walsall Health	Theft or loss	Healthcare	GB	40 records	VCDB
2017-01-01	Washington DC Department of Health and Human Services	Error / misconfiguration	Healthcare	Unknown	138 records	VCDB
2017-01-01	Washington State Univerisity	Theft or loss	Education	WA, US	1.0M records	VCDB
2017-01-01	We Heart It	Hacking / intrusion	Information	US	8.0M records	VCDB
2017-01-01	William Osler Health System	Insider misuse	Healthcare	CA	—	VCDB
2017-01-01	Wonga	Hacking / intrusion	Finance & Insurance	GB	270k records	VCDB
2017-01-01	Woolworths	Hacking / intrusion	Retail	AU	—	VCDB
2017-01-01	XBOX360 ISO	Hacking / intrusion	Information	Unknown	2.5M records	VCDB
2017-01-01	Yale New Haven Hospital	Insider misuse	Healthcare	Conneticut, US	200 records	VCDB
2017-01-01	eBay Inc	Error / misconfiguration	Retail	US-CA, US	—	VCDB
2017-01-01	iMax Medical Billing	Error / misconfiguration	Professional Services	OH, US	1,600 records	VCDB
2017-01-01	university of chicago	Error / misconfiguration	Healthcare	US-IL, 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 16:13 UTC.