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: 70.4M; 474 breaches reported to HHS
Material incidents, US listed firms: 22; SEC 8-K Item 1.05, 12 months
Accounts in new breach records: 521.9M; 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 sectorHealthcare747 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 disclosureDouble CounterData breach (cause not stated) · 4 Oct 2026 · HIBP

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 / intrusion792
Data breach (cause not stated)150
Unauthorised access or disclosure60
Ransomware9
Credential compilation (no single victim)5
Infostealer logs5
Theft or loss4
Error / misconfiguration1

Hacking / intrusion792
Data breach (cause not stated)150
Unauthorised access or disclosure60
Ransomware9
Credential compilation (no single victim)5
Infostealer logs5
Theft or loss4
Error / misconfiguration1

Hacking / intrusion792
Data breach (cause not stated)150
Unauthorised access or disclosure60
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	680	60	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 (29 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
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
Radiology Associates of Richmond · Healthcare	2	1 Jul 2025 – 21 May 2026	Hacking / intrusion	HHS

6All incidents

438 incidents match, newest first.

Date	Organisation	Type of attack	Sector	Where	Affected	Source
2026-04-09	Clinical Registry Solutions	Hacking / intrusion	Professional Services	NY, US	—	VCDB
2025-09-02	Cloudflare	Hacking / intrusion	Professional Services	CA, US	—	VCDB
2025-09-02	Palo Alto Networks	Hacking / intrusion	Professional Services	CA, US	—	VCDB
2025-09-02	Proofpoint	Hacking / intrusion	Professional Services	CA, US	—	VCDB
2025-09-01	SpyCloud	Hacking / intrusion	Professional Services	TX, US	—	VCDB
2025-08-28	Tanium	Hacking / intrusion	Professional Services	WA, US	—	VCDB
2025-08-27	Bugcrowd	Hacking / intrusion	Professional Services	CA, US	—	VCDB
2025-08-22	HackerOne	Hacking / intrusion	Professional Services	CA, US	—	VCDB
2025-08-22	Rubrik	Hacking / intrusion	Professional Services	CA, US	—	VCDB
2025-08-21	Megaport	Hacking / intrusion	Professional Services	AU	—	VCDB
2025-08-21	Sigma Computing	Hacking / intrusion	Professional Services	CA, US	—	VCDB
2025-08-17	1-800Accountant	Hacking / intrusion	Professional Services	NY, US	—	VCDB
2025-08-12	Pantheon	Hacking / intrusion	Professional Services	CA, US	—	VCDB
2025-08-12	Toast	Hacking / intrusion	Professional Services	MA, US	—	VCDB
2025-04-01	Toppan Next Tech	Ransomware	Professional Services	SG	—	VCDB
2025-02-26	DermCare Management	Hacking / intrusion	Professional Services	FL, US	—	VCDB
2025-01-22	Cerner/Oracle Health	Hacking / intrusion	Professional Services	CA, US	—	VCDB
2025-01-13	Unnamed organisation	Hacking / intrusion	Professional Services	Unknown	—	VCDB
2024-12-17	Kelly Benefits	Hacking / intrusion	Professional Services	MD, US	—	VCDB
2023-12-01	General Informatics LLC	Hacking / intrusion	Professional Services	LA, US	—	VCDB
2023-06-01	Crowe	Ransomware	Professional Services	IL, US	—	VCDB
2023-06-01	Datasite	Ransomware	Professional Services	MN, US	—	VCDB
2023-06-01	Discovery	Ransomware	Professional Services	MD, US	—	VCDB
2023-06-01	Ernst and Young	Ransomware	Professional Services	NY, US	—	VCDB
2023-06-01	Gen Digital	Ransomware	Professional Services	AZ, US	—	VCDB
2023-06-01	KPMG	Ransomware	Professional Services	NY, US	—	VCDB
2023-06-01	Kvictim_id_valueL Gates	Ransomware	Professional Services	CA, US	—	VCDB
2023-06-01	PBI Research Service	Ransomware	Professional Services	MN, US	—	VCDB
2023-06-01	Proskauer Rose	Ransomware	Professional Services	CA, US	—	VCDB
2023-06-01	Science Applications International Corporation	Ransomware	Professional Services	VA, US	—	VCDB
2023-06-01	Ventiv Technology	Ransomware	Professional Services	MA, US	—	VCDB
2023-06-01	Vitality Group	Ransomware	Professional Services	CA, US	—	VCDB
2021-12-01	Battelle for Kids	Ransomware	Professional Services	OH, US	500k records	VCDB
2021-10-01	Deep6.AI	Error / misconfiguration	Professional Services	CA, US	422.0M records	VCDB
2021-08-01	Maritz Holding Inc.	Error / misconfiguration	Professional Services	MO, US	—	VCDB
2021-07-07	York Animal Hospital	Ransomware	Professional Services	ME, US	—	VCDB
2021-06-02	AMT	Error / misconfiguration	Professional Services	CN	6.0M records	VCDB
2021-05-17	Maximus	Hacking / intrusion	Professional Services	OH, US	334k records	VCDB
2021-05-01	Microsoft	Error / misconfiguration	Professional Services	CA, US	38.0M records	VCDB
2021-04-01	Groupe Reorev	Ransomware	Professional Services	FR	—	VCDB
2021-03-28	Hedgeye	Insider misuse	Professional Services	CT, US	—	VCDB
2021-03-01	Honeywell International Inc	Malware	Professional Services	NC, US	—	VCDB
2021-02-04	BabyChakra	Error / misconfiguration	Professional Services	IN	5.5M records	VCDB
2021-02-01	Campbell Conroy & O'Neil	Ransomware	Professional Services	MA, US	—	VCDB
2021-02-01	CaptureRX	Ransomware	Professional Services	TX, US	1.7M records	VCDB
2021-01-01	Everis	Malware	Professional Services	ES	—	VCDB
2021-01-01	SocialArks	Error / misconfiguration	Professional Services	CN	318.0M records	VCDB
2021-01-01	SuperSoftTech	Error / misconfiguration	Professional Services	CN	21.0M records	VCDB
2021-01-01	Veritas	Ransomware	Professional Services	IL	180k records	VCDB
2020-12-01	PracticeFirst	Ransomware	Professional Services	NY, US	1.2M 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 2026-10-13 15:28 UTC.