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: 614; last 12 months, every source
People in US health breaches: 70.5M; 478 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 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
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
2018-08-06	Rbx.Rocks rbx.rocks	Data breach (cause not stated)	—	—	150k accounts	HIBP
2018-08-02	Bank of Guam	Theft or loss	Finance & Insurance	GU, US	—	VCDB
2018-08-01	Jersey Archive	Error / misconfiguration	Public Administration	GB	—	VCDB
2018-07-30	Taranaki High School	Ransomware	Education	NZ	—	VCDB
2018-07-28	Lanwar lanwar.com	Data breach (cause not stated)	—	—	45k accounts	HIBP
2018-07-27	CreditMate	Error / misconfiguration	Administrative	IN	19k records	VCDB
2018-07-27	KICKICO	Hacking / intrusion	Finance & Insurance	Unknown	—	VCDB
2018-07-27	Kaiser Permanente	Hacking / intrusion	Finance & Insurance	US	—	VCDB
2018-07-27	New England Dermatology	Error / misconfiguration	Healthcare	MA, US	16k records	VCDB
2018-07-25	Banco de Chile	Hacking / intrusion	Finance & Insurance	CL	14k records	VCDB
2018-07-24	China Ocean Shipping Company	Ransomware	Transportation	CN	—	VCDB
2018-07-24	State Bank of India	Theft or loss	Finance & Insurance	IN	—	VCDB
2018-07-23	Apollo apollo.io	Data breach (cause not stated)	—	—	125.9M accounts	HIBP
2018-07-23	Dadar, India City Accountant	Ransomware	Professional Services	IN	—	VCDB
2018-07-17	Australia National Health Practitioner Ombudsman and Privacy Commissioner	Error / misconfiguration	Public Administration	AU	—	VCDB
2018-07-16	Georgia Tech	Error / misconfiguration	Education	GA, US	8,000 records	VCDB
2018-07-15	Hong Kong Department of Health	Ransomware	Public Administration	HK	—	VCDB
2018-07-13	Breast Cancer Network Australia (BCNA)	Malware	Other Services	AU	—	VCDB
2018-07-13	CVS	Theft or loss	Retail	OH, US	—	VCDB
2018-07-13	WESTMORELAND COUNTY HOUSING AUTHORITY	Ransomware	Public Administration	PA, US	—	VCDB
2018-07-12	Toronto Police Department	Insider misuse	Public Administration	CA	—	VCDB
2018-07-11	NPM	Hacking / intrusion	Information	CA, US	—	VCDB
2018-07-10	Animoto animoto.com	Data breach (cause not stated)	—	—	22.4M accounts	HIBP
2018-07-10	MyEtherWallet	Hacking / intrusion	Finance & Insurance	Unknown	—	VCDB
2018-07-10	Ohio Living	Hacking / intrusion	Healthcare	OH, US	6,510 records	VCDB
2018-07-10	University of Sydney	Phishing / social engineering	Education	AU	—	VCDB
2018-07-09	Bancor	Hacking / intrusion	Finance & Insurance	Unknown	—	VCDB
2018-07-09	Cass Regional Medical Center	Ransomware	Healthcare	MO, US	—	VCDB
2018-07-09	Fashion Nexus fashionnexus.co.uk	Data breach (cause not stated)	—	—	1.3M accounts	HIBP
2018-07-09	Klamath County, OR	Hacking / intrusion	Public Administration	OR, US	2 records	VCDB
2018-07-09	ShareThis sharethis.com	Data breach (cause not stated)	—	—	41.0M accounts	HIBP
2018-07-08	Bookmate bookmate.com	Data breach (cause not stated)	—	—	3.8M accounts	HIBP
2018-07-06	Lake Oswego School District (Oregon)	Hacking / intrusion	Education	OR, US	—	VCDB
2018-07-06	Taf Adoption Agency	Error / misconfiguration	Healthcare	IL	—	VCDB
2018-07-05	500px 500px.com	Data breach (cause not stated)	—	—	14.9M accounts	HIBP
2018-07-05	General Electric	Insider misuse	Wholesale	NY, US	—	VCDB
2018-07-05	Unidentified Hotel	Ransomware	Accommodation & Food	IN	—	VCDB
2018-07-04	Stronghold Kingdoms strongholdkingdoms.com	Data breach (cause not stated)	—	—	5.2M accounts	HIBP
2018-07-03	Sony Pictures Entertainment	Error / misconfiguration	Information	CA, US	—	VCDB
2018-07-03	Taiwan Democratic Progressive Party's (DPP)	Hacking / intrusion	Other Services	TW	—	VCDB
2018-07-01	8fit 8fit.com	Data breach (cause not stated)	—	—	15.0M accounts	HIBP
2018-07-01	8fit	Hacking / intrusion	Professional Services	DE	20.0M records	VCDB
2018-07-01	BHP Minerals	Error / misconfiguration	Mining	AU	2,000 records	VCDB
2018-07-01	Blueport Wireless	Hacking / intrusion	Information	MA, US	1 records	VCDB
2018-07-01	Envision Healthcare Corporation	Hacking / intrusion	Healthcare	TN, US	—	VCDB
2018-07-01	Guardant Health	Hacking / intrusion	Healthcare	US	—	VCDB
2018-07-01	Idaho Department of Corrections	Hacking / intrusion	Public Administration	ID, US	—	VCDB
2018-07-01	Intuition College Savings Solutions	Insider misuse	Finance & Insurance	FL, US	5 records	VCDB
2018-07-01	Level One Robotics and Controls	Error / misconfiguration	Professional Services	CA	47k records	VCDB
2018-07-01	Liverpool Football Club	Hacking / intrusion	Entertainment	GB	150 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 23:18 UTC.