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: 614; last 12 months, every source
People in US health breaches: 70.5M; 478 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 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
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
2019-05-03	EatStreet eatstreet.com	Data breach (cause not stated)	—	—	6.4M accounts	HIBP
2019-05-01	American Baptist Homes of the Midwest,	Ransomware	Healthcare	MN, US	—	VCDB
2019-05-01	Beaumont Health	Insider misuse	Healthcare	US-MI, US	1 records	VCDB
2019-05-01	Chtrbox	Error / misconfiguration	Professional Services	IN	49.0M records	VCDB
2019-05-01	Ifficient	Error / misconfiguration	Professional Services	CO, US	8.0M records	VCDB
2019-05-01	North West Territories Government	Theft or loss	Public Administration	CA	—	VCDB
2019-05-01	Oklahoma City Public Schools	Ransomware	Education	OK, US	—	VCDB
2019-05-01	Post Acute Medical, LLC	Insider misuse	Healthcare	PA, US	—	VCDB
2019-05-01	Queen Elizabeth Hospital	Insider misuse	Healthcare	GB	—	VCDB
2019-05-01	Read Novel readnovel.com	Data breach (cause not stated)	—	—	22.4M accounts	HIBP
2019-05-01	Safaricom	Insider misuse	Information	KE	11.5M records	VCDB
2019-05-01	StockX	Unknown	Information	US-MI, US	6.8M records	VCDB
2019-05-01	Truecaller	Insider misuse	Information	Unknown	29.9M records	VCDB
2019-05-01	Weight Loss Grants	Error / misconfiguration	Other Services	ON, CA	—	VCDB
2019-04-29	Washington University School of Medicine's ophthalmology and visual sciences department	Phishing / social engineering	Education	MO, US	—	VCDB
2019-04-28	Aimware aimware.net	Data breach (cause not stated)	—	—	305k accounts	HIBP
2019-04-27	National Cardiovascular Partners	Hacking / intrusion	Healthcare	CA, US	78k records	VCDB
2019-04-24	steps to recovery	Error / misconfiguration	Healthcare	US-PA, US	146k records	VCDB
2019-04-23	Connally Memorial Medical Center	Theft or loss	Healthcare	TX, US	7,358 records	VCDB
2019-04-22	Deezer deezer.com	Data breach (cause not stated)	—	—	229.0M accounts	HIBP
2019-04-18	TAP30	Error / misconfiguration	Transportation	IR	1.5M records	VCDB
2019-04-18	UMass Memorial Community Healthlink	Hacking / intrusion	Healthcare	US-MA, US	2 records	VCDB
2019-04-17	Regional Cancer Care Associates LLC	Hacking / intrusion	Healthcare	NJ, US	—	VCDB
2019-04-12	Instant Checkmate instantcheckmate.com	Data breach (cause not stated)	—	—	11.9M accounts	HIBP
2019-04-12	Truth Finder truthfinder.com	Data breach (cause not stated)	—	—	8.2M accounts	HIBP
2019-04-10	Main Street Clinical Associates, PA	Theft or loss	Healthcare	NC, US	—	VCDB
2019-04-07	Shingle Springs Health and Wellness Center	Ransomware	Healthcare	CA, US	—	VCDB
2019-04-04	Storenvy storenvy.com	Data breach (cause not stated)	—	—	11.1M accounts	HIBP
2019-04-01	AMC Networks	Error / misconfiguration	Information	US-NY, US	1.6M records	VCDB
2019-04-01	Capital One	Hacking / intrusion	Finance & Insurance	VA, US	106.0M records	VCDB
2019-04-01	City of Stratford	Ransomware	Public Administration	CA	—	VCDB
2019-04-01	Citycomp	Hacking / intrusion	Professional Services	BW, DE	313k records	VCDB
2019-04-01	EVERSANA	Unknown	Manufacturing	WI, US	—	VCDB
2019-04-01	Lumin PDF	Error / misconfiguration	Information	NZ-CAN, NZ	24.4M records	VCDB
2019-04-01	Lumin PDF luminpdf.com	Data breach (cause not stated)	—	—	15.5M accounts	HIBP
2019-04-01	Providence Health	Hacking / intrusion	Finance & Insurance	OR, US	122k records	VCDB
2019-04-01	Quantum Vision Centers and Eye Surgery Center LLC,	Ransomware	Healthcare	IL, US	—	VCDB
2019-04-01	Samsung	Error / misconfiguration	Retail	KR	—	VCDB
2019-04-01	Valero	Theft or loss	Retail	TX, US	—	VCDB
2019-03-31	Vastaamo vastaamo.fi	Data breach (cause not stated)	—	—	30k accounts	HIBP
2019-03-30	University of Florida Health Shands	Insider misuse	Healthcare	FL, US	1,562 records	VCDB
2019-03-28	Hakko Corporation hakko.com	Data breach (cause not stated)	—	—	9,665 accounts	HIBP
2019-03-23	Everybody Edits everybodyedits.com	Data breach (cause not stated)	—	—	871k accounts	HIBP
2019-03-22	Temple University	Error / misconfiguration	Education	PA, US	160 records	VCDB
2019-03-21	Utair utair.ru	Data breach (cause not stated)	—	—	401k accounts	HIBP
2019-03-18	Mindjolt mindjolt.com	Data breach (cause not stated)	—	—	28.4M accounts	HIBP
2019-03-14	Hurb hurb.com	Data breach (cause not stated)	—	—	20.7M accounts	HIBP
2019-03-13	Bloodworks Northwest	Theft or loss	Healthcare	WA, US	1,893 records	VCDB
2019-03-03	Adirondacks Accountable Care Organization	Hacking / intrusion	Information	NY, US	25k records	VCDB
2019-03-01	B.D. Riley's Irish Pub	Insider misuse	Accommodation & Food	TX, US	12 records	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 2026-10-16 19:15 UTC.