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: 612; last 12 months, every source
People in US health breaches: 70.5M; 476 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 sectorHealthcare754 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 / intrusion797
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 / intrusion797
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 / intrusion797
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	685	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

11,847 incidents, newest first.

Date	Organisation	Type of attack	Sector	Where	Affected	Source
2021-01-27	Emotet	Credential compilation (no single victim)	—	—	4.3M accounts	HIBP
2021-01-26	Unverified Data Source astoriacompany.com	Data breach (cause not stated)	—	—	11.5M accounts	HIBP
2021-01-20	Oxfam oxfam.org.au	Data breach (cause not stated)	—	—	1.8M accounts	HIBP
2021-01-20	Personal-Touch Holding corp	Ransomware	Healthcare	NY, US	759k records	VCDB
2021-01-16	Nevada Restaurant Services	Malware	Accommodation & Food	NV, US	—	VCDB
2021-01-13	Cochise Eye and Laser	Ransomware	Healthcare	AZ, US	100k records	VCDB
2021-01-13	Daily Quiz dailyquiz.me	Data breach (cause not stated)	—	—	8.0M accounts	HIBP
2021-01-12	Bourse des Vols bourse-des-vols.com	Data breach (cause not stated)	—	—	1.5M accounts	HIBP
2021-01-12	Date Hot Brunettes datehotbrunettes.com	Data breach (cause not stated)	—	—	1.5M accounts	HIBP
2021-01-12	Guns.com guns.com	Data breach (cause not stated)	—	—	376k accounts	HIBP
2021-01-06	United States Federal Government	Theft or loss	Public Administration	DC, US	—	VCDB
2021-01-06	WedMeGood wedmegood.com	Data breach (cause not stated)	—	—	1.3M accounts	HIBP
2021-01-04	Devil-Torrents.pl devil-torrents.pl	Data breach (cause not stated)	—	—	63k accounts	HIBP
2021-01-03	Adecco adecco.com	Data breach (cause not stated)	—	—	4.3M accounts	HIBP
2021-01-01	Accellion	Ransomware	Information	CA, US	5.8M records	VCDB
2021-01-01	Acer	Ransomware	Manufacturing	TW	—	VCDB
2021-01-01	Airtel	Hacking / intrusion	Information	IN	2.5M records	VCDB
2021-01-01	Bank Rakyat Indonesia	Hacking / intrusion	Finance & Insurance	ID	2.0M records	VCDB
2021-01-01	Bonobos	Hacking / intrusion	Wholesale	NY, US	70.0M records	VCDB
2021-01-01	Buyucoin	Hacking / intrusion	Finance & Insurance	IN	161k records	VCDB
2021-01-01	CVS	Error / misconfiguration	Retail	US	1.0B records	VCDB
2021-01-01	CityBee	Hacking / intrusion	Transportation	LT	110k records	VCDB
2021-01-01	Commport Communications	Ransomware	Information	CA	950k records	VCDB
2021-01-01	Everis	Malware	Professional Services	ES	—	VCDB
2021-01-01	Foreign, Commonwealth and Development Office	Hacking / intrusion	Public Administration	GB	—	VCDB
2021-01-01	Gab	Hacking / intrusion	Information	US	15k records	VCDB
2021-01-01	Hearing Care network	Hacking / intrusion	Healthcare	FL, US	32.0M records	VCDB
2021-01-01	IObit	Ransomware	Other Services	CA, US	—	VCDB
2021-01-01	Israeli Defense Force	Hacking / intrusion	Public Administration	IL	—	VCDB
2021-01-01	MeetMindful.com (MINDFUL, LLC.)	Hacking / intrusion	Other Services	IN, US	2.3M records	VCDB
2021-01-01	Moss Municipal Council	Error / misconfiguration	Public Administration	NO	—	VCDB
2021-01-01	Oxfam Australia	Hacking / intrusion	Other Services	AU	1.7M records	VCDB
2021-01-01	Phetchabun Hospital	Hacking / intrusion	Healthcare	TH	105k records	VCDB
2021-01-01	Prestera Center for Mental Health Services	Hacking / intrusion	Healthcare	WV, US	3,720 records	VCDB
2021-01-01	Primary Care Support England	Error / misconfiguration	Education	GB	—	VCDB
2021-01-01	Raychat.io	Error / misconfiguration	Information	IR	267.0M records	VCDB
2021-01-01	Siriraj Hospital	Hacking / intrusion	Healthcare	TH	39.0M records	VCDB
2021-01-01	SocialArks	Error / misconfiguration	Professional Services	CN	318.0M records	VCDB
2021-01-01	Somerset Independent School District	Ransomware	Education	TX, US	—	VCDB
2021-01-01	Southern Arkansas University	Ransomware	Education	AR, US	—	VCDB
2021-01-01	Summit County	Ransomware	Utilities	UT, US	—	VCDB
2021-01-01	SuperSoftTech	Error / misconfiguration	Professional Services	CN	21.0M records	VCDB
2021-01-01	Tamil Nadu Public Distribution System	Hacking / intrusion	Public Administration	IN	4.9M records	VCDB
2021-01-01	Teespring	Hacking / intrusion	Manufacturing	CA, US	8.2M records	VCDB
2021-01-01	Twitch	Hacking / intrusion	Information	CA, US	—	VCDB
2021-01-01	Twitter (200M) twitter.com	Data breach (cause not stated)	—	—	211.5M accounts	HIBP
2021-01-01	United States Air Force	Error / misconfiguration	Public Administration	US	—	VCDB
2021-01-01	Unnamed organisation	Insider misuse	Accommodation & Food	ZA	—	VCDB
2021-01-01	Unnamed organisation	Hacking / intrusion	Utilities	CA, US	1 records	VCDB
2021-01-01	VIPGames	Error / misconfiguration	Entertainment	SK	23.0M 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 06:15 UTC.