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: 618; last 12 months, every source
People in US health breaches: 70.5M; 477 breaches reported to HHS
Material incidents, US listed firms: 23; SEC 8-K Item 1.05, 12 months
Accounts in new breach records: 522.5M; 126 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
Infostealer logs5
Credential compilation (no single victim)5
Theft or loss4
Error / misconfiguration1

Hacking / intrusion797
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 / intrusion797
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	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
2023-06-01	FORDHAM UNIVERSITY	Ransomware	Education	NY, US	—	VCDB
2023-06-01	FORSYTH TECHNICAL COMMUNITY COLLEGE	Ransomware	Education	NC, US	—	VCDB
2023-06-01	FRANKLIN PIERCE UNIVERSITY	Ransomware	Education	NH, US	—	VCDB
2023-06-01	FRESNO CITY COLLEGE	Ransomware	Education	CA, US	—	VCDB
2023-06-01	FRESNO PACIFIC UNIVERSITY	Ransomware	Education	CA, US	—	VCDB
2023-06-01	FRONTIER NURSING UNIVERSITY	Ransomware	Education	KY, US	—	VCDB
2023-06-01	FULL SAIL UNIVERSITY	Ransomware	Education	FL, US	—	VCDB
2023-06-01	Fidelity victim_id_value Guaranty Life Insurance Company	Ransomware	Finance & Insurance	IA, US	—	VCDB
2023-06-01	First National Bankers Bank	Ransomware	Finance & Insurance	MS, US	—	VCDB
2023-06-01	GADSDEN STATE COMMUNITY COLLEGE	Ransomware	Education	CA, US	—	VCDB
2023-06-01	GALEN COLLEGE OF NURSING	Ransomware	Education	UT, US	—	VCDB
2023-06-01	GASTON COLLEGE	Ransomware	Education	NC, US	—	VCDB
2023-06-01	GATEWAY COMMUNITY COLLEGE	Ransomware	Education	AZ, US	—	VCDB
2023-06-01	GEORGE C WALLACE COMMUNITY COLLEGE	Ransomware	Education	AL, US	—	VCDB
2023-06-01	GEORGE FOX UNIVERSITY	Ransomware	Education	OR, US	—	VCDB
2023-06-01	GEORGE MASON UNIVERSITY	Ransomware	Education	VA, US	—	VCDB
2023-06-01	GEORGE WASHINGTON HIGH SCHOOL	Ransomware	Education	CA, US	—	VCDB
2023-06-01	GEORGE WASHINGTON UNIVERSITY	Ransomware	Education	DC, US	—	VCDB
2023-06-01	GEORGETOWN UNIVERSITY	Ransomware	Education	DC, US	—	VCDB
2023-06-01	GEORGIA GWINNETT COLLEGE	Ransomware	Education	GA, US	—	VCDB
2023-06-01	GEORGIA HIGHLANDS COLLEGE	Ransomware	Education	GA, US	—	VCDB
2023-06-01	GEORGIA INSTITUTE OF TECHNOLOGY	Ransomware	Education	GA, US	—	VCDB
2023-06-01	GODDARD COLLEGE	Ransomware	Education	VT, US	—	VCDB
2023-06-01	GOLDEN WEST COLLEGE	Ransomware	Education	CA, US	—	VCDB
2023-06-01	GONZAGA UNIVERSITY	Ransomware	Education	WA, US	—	VCDB
2023-06-01	GORDON-CONWELL THEOLOGICAL – HAMILTON	Ransomware	Education	MA, US	—	VCDB
2023-06-01	GRAMBLING STATE UNIVERSITY	Ransomware	Education	LA, US	—	VCDB
2023-06-01	GRAND RAPIDS COMMUNITY COLLEGE	Ransomware	Education	MI, US	—	VCDB
2023-06-01	GREAT BASIN COLLEGE	Ransomware	Education	NV, US	—	VCDB
2023-06-01	GREENVILLE TECHNICAL COLLEGE	Ransomware	Education	SC, US	—	VCDB
2023-06-01	GREENVILLE UNIVERSITY	Ransomware	Education	IL, US	—	VCDB
2023-06-01	GROSSMONT COLLEGE	Ransomware	Education	CA, US	—	VCDB
2023-06-01	Gen Digital	Ransomware	Professional Services	AZ, US	—	VCDB
2023-06-01	Genworth North America Corporation	Ransomware	Finance & Insurance	VA, US	—	VCDB
2023-06-01	HALIFAX COMMUNITY COLLEGE	Ransomware	Education	NC, US	—	VCDB
2023-06-01	HARVARD UNIVERSITY	Ransomware	Education	MA, US	—	VCDB
2023-06-01	HEARTLAND COMMUNITY COLLEGE	Ransomware	Education	IL, US	—	VCDB
2023-06-01	HIGHLAND COMMUNITY COLLEGE	Ransomware	Education	KS, US	—	VCDB
2023-06-01	HILL COLLEGE	Ransomware	Education	TX, US	—	VCDB
2023-06-01	HILLSBOROUGH COMMUNITY COLLEGE	Ransomware	Education	FL, US	—	VCDB
2023-06-01	HOOD THEOLOGICAL SEMINARY	Ransomware	Education	NC, US	—	VCDB
2023-06-01	HORN HIGH SCHOOL	Ransomware	Education	TX, US	—	VCDB
2023-06-01	HORRY-GEORGETOWN TECHNICAL COLLEGE	Ransomware	Education	SC, US	—	VCDB
2023-06-01	HOUSATONIC COMMUNITY COLLEGE	Ransomware	Education	CT, US	—	VCDB
2023-06-01	HOWARD COMMUNITY COLLEGE	Ransomware	Education	MD, US	—	VCDB
2023-06-01	HOWARD UNIVERSITY	Ransomware	Education	DC, US	—	VCDB
2023-06-01	HUDSON COUNTY COMMUNITY COLLEGE	Ransomware	Education	NJ, US	—	VCDB
2023-06-01	Harris Center for Mental Health and IDD	Ransomware	Healthcare	TX, US	—	VCDB
2023-06-01	Hartford Life and Accident Insurance Company	Ransomware	Finance & Insurance	CT, US	—	VCDB
2023-06-01	Hess	Ransomware	Manufacturing	NY, US	—	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 2026-10-15 15:49 UTC.