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
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
2018-01-01	Newfoundland and Labrador Medical Care Plan	Error / misconfiguration	Healthcare	CA-NL, CA	3,300 records	VCDB
2018-01-01	Optical Center	Hacking / intrusion	Retail	FR	—	VCDB
2018-01-01	Police Service of Northern Ireland	Error / misconfiguration	Public Administration	IE	—	VCDB
2018-01-01	QuikTrip	Theft or loss	Retail	US-KS, US	78 records	VCDB
2018-01-01	Quora	Hacking / intrusion	Information	CA, US	100k records	VCDB
2018-01-01	Regency Theatres	Hacking / intrusion	Information	US	—	VCDB
2018-01-01	Riot Games	Hacking / intrusion	Information	Unknown	—	VCDB
2018-01-01	Rolls-Royce	Phishing / social engineering	Manufacturing	GB	—	VCDB
2018-01-01	Rosemount-Apple Valley-Eagan School District 196	Hacking / intrusion	Education	MN, US	15 records	VCDB
2018-01-01	Royal Enfield	Error / misconfiguration	Manufacturing	IN	452k records	VCDB
2018-01-01	Samsung	Error / misconfiguration	Manufacturing	Unknown	—	VCDB
2018-01-01	San Diego Unified School District	Phishing / social engineering	Education	CA, US	500k records	VCDB
2018-01-01	Shiawassee County	Phishing / social engineering	Public Administration	MI, US	—	VCDB
2018-01-01	Shiawassee County	Phishing / social engineering	Public Administration	MI, US	—	VCDB
2018-01-01	Sooke School District	Hacking / intrusion	Education	CA-BC, CA	16 records	VCDB
2018-01-01	SportsMEDIA Technology Corp	Insider misuse	Professional Services	NC, US	—	VCDB
2018-01-01	Sportscapers Construction, Inc.	Insider misuse	Construction	TX, US	—	VCDB
2018-01-01	St Peter's Surgery and Endoscopy Center	Ransomware	Healthcare	NY, US	135k records	VCDB
2018-01-01	St. Vincent's Hospital	Error / misconfiguration	Healthcare	AU	200 records	VCDB
2018-01-01	Steward Healthcare System	Insider misuse	Healthcare	MA, US	—	VCDB
2018-01-01	SunTrust Banks Inc.	Insider misuse	Finance & Insurance	GA, US	1.5M records	VCDB
2018-01-01	Sunoco	Theft or loss	Retail	NY, US	—	VCDB
2018-01-01	SureBet247	Error / misconfiguration	Entertainment	NG	—	VCDB
2018-01-01	The Apollo Company	Hacking / intrusion	Professional Services	CA, US	200.0M records	VCDB
2018-01-01	Thomas Cook Airlines	Hacking / intrusion	Transportation	Unknown	—	VCDB
2018-01-01	Town of Whitchurch-Stoufville, NY	Insider misuse	Public Administration	GB	24 records	VCDB
2018-01-01	USACS Management Group	Hacking / intrusion	Healthcare	US	16k records	VCDB
2018-01-01	Unidentified Dental Practice	Phishing / social engineering	Healthcare	SC, UM	—	VCDB
2018-01-01	Unidentified Hospital	Phishing / social engineering	Healthcare	MI, US	—	VCDB
2018-01-01	United States Air Force	Hacking / intrusion	Public Administration	US	1 records	VCDB
2018-01-01	United States Post Office	Theft or loss	Transportation	TN, US	—	VCDB
2018-01-01	Universiti Teknologi Mara (UiTM)	Unknown	Education	MY	1.2M records	VCDB
2018-01-01	Unnamed organisation	Ransomware	Transportation	US	—	VCDB
2018-01-01	Unnamed organisation	Ransomware	Transportation	US	—	VCDB
2018-01-01	Unnamed organisation	Malware	Transportation	US	—	VCDB
2018-01-01	Unnamed organisation	Malware	Transportation	US	—	VCDB
2018-01-01	Unnamed organisation	Hacking / intrusion	Real Estate	AU	—	VCDB
2018-01-01	Unnamed organisation	Malware	Transportation	US	—	VCDB
2018-01-01	Veteran's Administration	Insider misuse	Public Administration	US-WV, US	5 records	VCDB
2018-01-01	VirMedica	Error / misconfiguration	Information	MA, US	40k records	VCDB
2018-01-01	Wellington Police Department	Insider misuse	Public Administration	NZ	1 records	VCDB
2018-01-01	West Midlands police	Theft or loss	Public Administration	GB	—	VCDB
2018-01-01	Zcall	Error / misconfiguration	Information	KR	26.0M records	VCDB
2018-01-01	adapt.io	Error / misconfiguration	Information	Unknown	9.0M records	VCDB
2018-01-01	flightradar24	Hacking / intrusion	Information	AT	—	VCDB
2018-01-01	kahunacasino.com	Error / misconfiguration	Entertainment	CW	108.0M records	VCDB
2018-01-01	mindbody	Error / misconfiguration	Professional Services	US	113.0M records	VCDB
2018-01-01	voxox	Error / misconfiguration	Information	US	26.0M records	VCDB
2017-12-31	The Fly on the Wall theflyonthewall.com	Data breach (cause not stated)	—	—	84k accounts	HIBP
2017-12-30	HoundDawgs hounddawgs.org	Data breach (cause not stated)	—	—	46k accounts	HIBP

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 04:48 UTC.