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
Infostealer logs5
Credential compilation (no single victim)5
Theft or loss4
Error / misconfiguration1

Hacking / intrusion799
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 / intrusion799
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	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
2016-12-30	Emory Healthcare	Ransomware	Healthcare	GA, US	200k records	VCDB
2016-12-30	University of Pittsburgh Medical Center	Insider misuse	Healthcare	PA, US	111 records	VCDB
2016-12-29	Denton Heart Group	Theft or loss	Healthcare	TX, US	—	VCDB
2016-12-28	Brand New Day	Hacking / intrusion	Healthcare	CA, US	14k records	VCDB
2016-12-27	SpaSurgica	Error / misconfiguration	Healthcare	CA	—	VCDB
2016-12-26	Alaska Public Safety Department	Theft or loss	Public Administration	Alaska, US	1,020 records	VCDB
2016-12-23	Data Enrichment Records	Credential compilation (no single victim)	—	—	8.2M accounts	HIBP
2016-12-21	Children’s Hospital Los Angeles	Theft or loss	Healthcare	CA, US	3,600 records	VCDB
2016-12-16	Anti Public Combo List	Credential compilation (no single victim)	—	—	458.0M accounts	HIBP
2016-12-16	Ethereum ethereum.org	Data breach (cause not stated)	—	—	16k accounts	HIBP
2016-12-16	Family Service Rochester	Ransomware	Healthcare	MN, US	17k records	VCDB
2016-12-15	CVS	Insider misuse	Retail	MA, US	20 records	VCDB
2016-12-15	PayAsUGym	Hacking / intrusion	Entertainment	GB	400k records	VCDB
2016-12-15	PayAsUGym payasugym.com	Data breach (cause not stated)	—	—	400k accounts	HIBP
2016-12-12	Capital Prosthetic and Orthotic Center	Theft or loss	Healthcare	OH, UM	1,100 records	VCDB
2016-12-09	Wonderful Center for Health Innovation	Theft or loss	Healthcare	CA, US	—	VCDB
2016-12-08	Family Medicine East	Theft or loss	Healthcare	KS, US	—	VCDB
2016-12-06	Scottish Football Association	Malware	Entertainment	GB	—	VCDB
2016-12-05	MrExcel mrexcel.com	Data breach (cause not stated)	—	—	366k accounts	HIBP
2016-12-02	Biohack.me biohack.me	Data breach (cause not stated)	—	—	3,402 accounts	HIBP
2016-12-01	ANZ Bank	Insider misuse	Finance & Insurance	NZ	—	VCDB
2016-12-01	Brigham and Women’s Hospital	Phishing / social engineering	Healthcare	MA, US	—	VCDB
2016-12-01	California Department of Justice	Error / misconfiguration	Public Administration	CA, US	3,424 records	VCDB
2016-12-01	Carroll County Sheriffs Office	Ransomware	Public Administration	OH, US	—	VCDB
2016-12-01	Coney Island Hospital, New York	Error / misconfiguration	Healthcare	New York, US	3,500 records	VCDB
2016-12-01	FashionFantasyGame fashionfantasygame.com	Data breach (cause not stated)	—	—	2.4M accounts	HIBP
2016-12-01	Health Solutions	Error / misconfiguration	Healthcare	IN	43k records	VCDB
2016-12-01	Houston Interventional Cardiology	Phishing / social engineering	Healthcare	TX, US	1 records	VCDB
2016-12-01	Sainte-Justine Hospital	Insider misuse	Healthcare	CA	—	VCDB
2016-12-01	Shelton High School	Hacking / intrusion	Education	US	—	VCDB
2016-12-01	Special Operations Command	Error / misconfiguration	Public Administration	DC, US	—	VCDB
2016-12-01	Synergy Specialists Medical Group	Hacking / intrusion	Healthcare	CA, US	—	VCDB
2016-12-01	Unnamed organisation	Phishing / social engineering	Healthcare	NZ	1 records	VCDB
2016-12-01	Veterans Affairs Canada	Error / misconfiguration	Public Administration	CA	—	VCDB
2016-12-01	Warmane warmane.com	Data breach (cause not stated)	—	—	1.1M accounts	HIBP
2016-12-01	West Virginia Office of the Chief Medical Examiner	Theft or loss	Public Administration	WV, US	1,019 records	VCDB
2016-12-01	Wright County	Insider misuse	Public Administration	MN, US	1,000 records	VCDB
2016-12-01	Youku youku.com	Data breach (cause not stated)	—	—	91.9M accounts	HIBP
2016-11-29	CEFCO gas station	Theft or loss	Retail	tx, US	—	VCDB
2016-11-29	Carleton University	Ransomware	Education	CA	—	VCDB
2016-11-28	xHamster xhamster.com	Data breach (cause not stated)	—	—	377k accounts	HIBP
2016-11-26	Holiday Inn Club Vacations	Theft or loss	Administrative	TX, US	—	VCDB
2016-11-26	Quest Diagnostics	Hacking / intrusion	Healthcare	NJ, US	34k records	VCDB
2016-11-25	Greene King	Error / misconfiguration	Accommodation & Food	GB	2,000 records	VCDB
2016-11-19	MJ Freeway Business Solutions	Hacking / intrusion	Information	CO, US	—	VCDB
2016-11-17	CashCrate cashcrate.com	Data breach (cause not stated)	—	—	6.8M accounts	HIBP
2016-11-17	Department of National Defence	Hacking / intrusion	Public Administration	CA	—	VCDB
2016-11-16	PornHub.com	Malware	Information	CA	—	VCDB
2016-11-16	U.S. Bank	Insider misuse	Finance & Insurance	US	1 records	VCDB
2016-11-14	TSYS Merchant Solutions	Error / misconfiguration	Finance & Insurance	NE, 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 17:29 UTC.