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
2016-10-12	Kaiser Permanente	Error / misconfiguration	Healthcare	CA, UM	8,020 records	VCDB
2016-10-11	Manitoba Finance	Error / misconfiguration	Professional Services	CA	6 records	VCDB
2016-10-10	GFAN gfan.com	Data breach (cause not stated)	—	—	22.5M accounts	HIBP
2016-10-10	Sheet Metal Workers Local Union No. 104	Error / misconfiguration	Other Services	CA, US	25k records	VCDB
2016-10-08	Modern Business Solutions modbsolutions.com	Data breach (cause not stated)	—	—	58.8M accounts	HIBP
2016-10-06	Pont3	Hacking / intrusion	Entertainment	AU	145k records	VCDB
2016-10-05	Texaco/Kangaroo gas station	Theft or loss	Retail	MS, US	—	VCDB
2016-10-04	Various	Theft or loss	Retail	TX, US	—	VCDB
2016-10-04	Western Health	Error / misconfiguration	Healthcare	CA, US	—	VCDB
2016-10-01	VA Eastern Colorado Health Care System	Insider misuse	Public Administration	Colorado, US	2,100 records	VCDB
2016-10-01	Capitol Petro	Theft or loss	Retail	US	—	VCDB
2016-10-01	Central Platte Natural Resources District’s	Ransomware	Public Administration	US	—	VCDB
2016-10-01	Chevron Corp	Theft or loss	Retail	GA, US	—	VCDB
2016-10-01	Concentrix Mums	Error / misconfiguration	Professional Services	GB	100 records	VCDB
2016-10-01	Department of Social Protection	Insider misuse	Public Administration	IE	61 records	VCDB
2016-10-01	Discovery Benefits	Hacking / intrusion	Public Administration	North Dakota, US	—	VCDB
2016-10-01	Europol	Error / misconfiguration	Public Administration	NL	700 records	VCDB
2016-10-01	Group Health, Inc.	Error / misconfiguration	Finance & Insurance	NY, US	—	VCDB
2016-10-01	Habitat for Humanity	Error / misconfiguration	Construction	GA, US	5,500 records	VCDB
2016-10-01	Health Access Network	Insider misuse	Healthcare	ME, US	—	VCDB
2016-10-01	Horizon THC	Error / misconfiguration	Retail	AZ, US	—	VCDB
2016-10-01	Knappschaft	Error / misconfiguration	Finance & Insurance	DE	1 records	VCDB
2016-10-01	Lee Memorial Hospital	Insider misuse	Healthcare	FL, US	1 records	VCDB
2016-10-01	Limburg Police Department	Insider misuse	Public Administration	NL	—	VCDB
2016-10-01	Lukoil	Theft or loss	Retail	PA, US	—	VCDB
2016-10-01	Manitoba Public Insurance	Insider misuse	Finance & Insurance	CA	31 records	VCDB
2016-10-01	Michigan Unemployment Insurance Agency	Error / misconfiguration	Public Administration	MI, US	1.9M records	VCDB
2016-10-01	Pakwheels.com	Hacking / intrusion	Information	PK	675k records	VCDB
2016-10-01	Parker Jewish Institute for Health Care and Rehabilitation	Insider misuse	Healthcare	NY, US	3 records	VCDB
2016-10-01	Pokémon Negro pokemonnegro.com	Data breach (cause not stated)	—	—	830k accounts	HIBP
2016-10-01	Premier Bank	Theft or loss	Finance & Insurance	mn, US	—	VCDB
2016-10-01	St Mary's Goverment	Ransomware	Public Administration	US	—	VCDB
2016-10-01	Three Mobile	Hacking / intrusion	Information	GB	133k records	VCDB
2016-10-01	Tieto Lietuva	Error / misconfiguration	Information	LT	—	VCDB
2016-10-01	U.S. Secret Service	Insider misuse	Public Administration	US	41 records	VCDB
2016-10-01	Uber	Hacking / intrusion	Transportation	CA, US	57.0M records	VCDB
2016-10-01	United States Navy	Theft or loss	Public Administration	CA, US	134k records	VCDB
2016-10-01	Vancouver Pain Management	Error / misconfiguration	Administrative	CA	—	VCDB
2016-10-01	Winnipeg Regional Health Authority	Theft or loss	Public Administration	CA	1,000 records	VCDB
2016-09-30	Magna Terra Health Services	Error / misconfiguration	Retail	CA	470 records	VCDB
2016-09-29	OptumHealth	Error / misconfiguration	Healthcare	NM, US	2,006 records	VCDB
2016-09-28	Gulf Oil Corp Ltd	Theft or loss	Retail	VA, US	—	VCDB
2016-09-28	Israeli Airforce	Theft or loss	Public Administration	IL	—	VCDB
2016-09-28	Kangaroo Gas station	Theft or loss	Retail	MS, US	—	VCDB
2016-09-27	7-Eleven	Theft or loss	Retail	FL, US	—	VCDB
2016-09-27	Aipai.com aipai.com	Data breach (cause not stated)	—	—	6.5M accounts	HIBP
2016-09-26	Gas Station	Theft or loss	Retail	NH, US	—	VCDB
2016-09-25	Red Cross Blood Service	Error / misconfiguration	Healthcare	AU	1.3M records	VCDB
2016-09-24	Dow Corning Corp	Insider misuse	Professional Services	MI, US	4,000 records	VCDB
2016-09-24	Dr. Larrie Mandreck	Ransomware	Healthcare	CA, 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 19:20 UTC.