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
2017-01-31	Akin Gump Strauss Hauer & Feld	Insider misuse	Professional Services	US-CA, US	1 records	VCDB
2017-01-31	Freedom Hosting II fhostingesps6bly.onion	Data breach (cause not stated)	—	—	381k accounts	HIBP
2017-01-30	DataCamp datacamp.com	Data breach (cause not stated)	—	—	761k accounts	HIBP
2017-01-30	Eastern Health	Insider misuse	Healthcare	CA	122 records	VCDB
2017-01-30	Pointe Coupee General	Phishing / social engineering	Healthcare	US	200 records	VCDB
2017-01-30	Taconic Biosciences, Inc	Phishing / social engineering	Agriculture	US-NY, US	700 records	VCDB
2017-01-27	eHealthInsurance	Phishing / social engineering	Finance & Insurance	WY, US	—	VCDB
2017-01-25	Campbell County Health	Phishing / social engineering	Healthcare	WY, US	1,456 records	VCDB
2017-01-25	LCS-WP LLC d/b/a Walnut Place	Ransomware	Healthcare	TX, US	5,000 records	VCDB
2017-01-25	Walnut Place	Ransomware	Healthcare	Unknown	—	VCDB
2017-01-24	Monarch Beverage	Phishing / social engineering	Retail	IN, US	—	VCDB
2017-01-24	UGI Utilities	Phishing / social engineering	Utilities	PA, US	1,900 records	VCDB
2017-01-23	California Correctional Health Care Services	Error / misconfiguration	Public Administration	CA, US	738 records	VCDB
2017-01-22	Austin Urology	Ransomware	Healthcare	TX, US	1 records	VCDB
2017-01-21	Sundance Institute	Hacking / intrusion	Information	UT, US	—	VCDB
2017-01-20	SwordFantasy swordfantasy.com	Data breach (cause not stated)	—	—	2.7M accounts	HIBP
2017-01-19	CrimeAgency vBulletin Hacks	Credential compilation (no single victim)	—	—	942k accounts	HIBP
2017-01-19	Palomar College	Hacking / intrusion	Education	CA, US	3,053 records	VCDB
2017-01-13	University Of California, Santa Cruz	Theft or loss	Education	California, US	1,000 records	VCDB
2017-01-12	Sound Community Services	Hacking / intrusion	Healthcare	CT, US	1,279 records	VCDB
2017-01-11	CVS Health	Theft or loss	Retail	MI, US	—	VCDB
2017-01-11	Little Red Door	Ransomware	Healthcare	IN, US	—	VCDB
2017-01-09	Sephora sephora.com.au	Data breach (cause not stated)	—	—	780k accounts	HIBP
2017-01-07	Spiral Toys	Hacking / intrusion	Manufacturing	CA, US	820k records	VCDB
2017-01-01	Aadhaar	Malware	Finance & Insurance	IN	88k records	VCDB
2017-01-01	Gallup Indian Medical Center	Insider misuse	Healthcare	NM, US	1 records	VCDB
2017-01-01	Mandiant	Hacking / intrusion	Professional Services	VA, US	—	VCDB
2017-01-01	St John Ambulance	Insider misuse	Healthcare	NZ	1 records	VCDB
2017-01-01	7-Eleven	Theft or loss	Retail	FL, US	—	VCDB
2017-01-01	8tracks	Hacking / intrusion	Information	US	18.0M records	VCDB
2017-01-01	AT&T	Hacking / intrusion	Information	US	—	VCDB
2017-01-01	Aetna	Error / misconfiguration	Finance & Insurance	NY, US	1,708 records	VCDB
2017-01-01	Always Best Senior Care Services	Insider misuse	Healthcare	PA, US	—	VCDB
2017-01-01	American Senior Communities	Phishing / social engineering	Healthcare	IN, US	17k records	VCDB
2017-01-01	Apollo	Hacking / intrusion	Professional Services	CA, US	10.0M records	VCDB
2017-01-01	Arizona Department of Administration	Hacking / intrusion	Public Administration	AZ, US	—	VCDB
2017-01-01	Asesewa Hospital	Insider misuse	Healthcare	GH	—	VCDB
2017-01-01	Australian Broadcasting Corporation	Error / misconfiguration	Information	AU	—	VCDB
2017-01-01	Autoway Car Sales	Insider misuse	Retail	MO, US	20 records	VCDB
2017-01-01	Ayudando Guardians Inc	Insider misuse	Healthcare	NM, US	—	VCDB
2017-01-01	BUPA	Insider misuse	Healthcare	GB	108k records	VCDB
2017-01-01	Barclays	Error / misconfiguration	Finance & Insurance	GB	—	VCDB
2017-01-01	Barts Health NHS Trust	Malware	Healthcare	GB	—	VCDB
2017-01-01	BayPort Credit Union	Theft or loss	Finance & Insurance	VA, US	—	VCDB
2017-01-01	Bayer	Insider misuse	Manufacturing	JP	—	VCDB
2017-01-01	Bell Lomax Moreton	Error / misconfiguration	Information	GB	—	VCDB
2017-01-01	Boots	Hacking / intrusion	Wholesale	GB	150k records	VCDB
2017-01-01	Brampton Civic Hospital	Insider misuse	Healthcare	CA	—	VCDB
2017-01-01	Brinks Security	Hacking / intrusion	Administrative	WI, US	—	VCDB
2017-01-01	British Cycling Team Sky	Theft or loss	Entertainment	GB	—	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 13:32 UTC.