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
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
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

11,847 incidents, newest first.

Date	Organisation	Type of attack	Sector	Where	Affected	Source
2023-06-01	LOYOLA MARYMOUNT UNIVERSITY	Ransomware	Education	CA, US	—	VCDB
2023-06-01	LOYOLA UNIVERSITY IN NEW ORLEAN	Ransomware	Education	LA, US	—	VCDB
2023-06-01	LYNN UNIVERSITY	Ransomware	Education	FL, US	—	VCDB
2023-06-01	Leggett victim_id_value Platt	Ransomware	Manufacturing	MO, US	—	VCDB
2023-06-01	Lobel Financial Corporation	Ransomware	Finance & Insurance	CA, US	—	VCDB
2023-06-01	MACOMB COMMUNITY COLLEGE	Ransomware	Education	MI, US	—	VCDB
2023-06-01	MANCHESTER COMMUNITY COLLEGE	Ransomware	Education	CT, US	—	VCDB
2023-06-01	MANHATTAN COLLEGE	Ransomware	Education	NY, US	—	VCDB
2023-06-01	MARQUETTE UNIVERSITY	Ransomware	Education	WI, US	—	VCDB
2023-06-01	MARTIN COMMUNITY COLLEGE	Ransomware	Education	NC, US	—	VCDB
2023-06-01	MARYWOOD UNIVERSITY	Ransomware	Education	PA, US	—	VCDB
2023-06-01	MASSACHUSETTS MARITIME ACADEMY	Ransomware	Education	MA, US	—	VCDB
2023-06-01	MCDOWELL TECHNICAL COMMUNITY COLLEGE	Ransomware	Education	NC, US	—	VCDB
2023-06-01	MCHENRY COUNTY COLLEGE	Ransomware	Education	IL, US	—	VCDB
2023-06-01	MCLENNAN COMMUNITY COLLEGE	Ransomware	Education	TX, US	—	VCDB
2023-06-01	MCPHS University	Ransomware	Education	MA, US	—	VCDB
2023-06-01	MERCY COLLEGE OF OHIO	Ransomware	Education	OH, US	—	VCDB
2023-06-01	MEREDITH COLLEGE	Ransomware	Education	NC, US	—	VCDB
2023-06-01	MESABI RANGE COLLEGE	Ransomware	Education	MN, US	—	VCDB
2023-06-01	METHODIST UNIVERSITY	Ransomware	Education	NC, US	—	VCDB
2023-06-01	METROPOLITAN COMMUNITY COLLEGE	Ransomware	Education	KS, US	—	VCDB
2023-06-01	METROPOLITAN STATE UNIVERSITY	Ransomware	Education	CO, US	—	VCDB
2023-06-01	MGH INSTITUTE OF HEALTH PROFESSIONS	Ransomware	Education	MA, US	—	VCDB
2023-06-01	MICHIGAN STATE UNIVERSITY	Ransomware	Education	MI, US	—	VCDB
2023-06-01	MID AMERICA CHRISTIAN UNIVERSITY	Ransomware	Education	OK, US	—	VCDB
2023-06-01	MIDAMERICA NAZARENE UNIVERSITY	Ransomware	Education	KS, US	—	VCDB
2023-06-01	MIDDLESEX COLLEGE	Ransomware	Education	NJ, US	—	VCDB
2023-06-01	MIDDLESEX COMMUNITY COLLEGE	Ransomware	Education	MA, US	—	VCDB
2023-06-01	MIDLAND UNIVERSITY	Ransomware	Education	NE, US	—	VCDB
2023-06-01	MIDWAY UNIVERSITY	Ransomware	Education	KY, US	—	VCDB
2023-06-01	MILDRED ELLEY SCHOOL	Ransomware	Education	NY, US	—	VCDB
2023-06-01	MILLIKIN UNIVERSITY	Ransomware	Education	IL, US	—	VCDB
2023-06-01	MILLSAPS COLLEGE	Ransomware	Education	MS, US	—	VCDB
2023-06-01	MILWAUKEE LUTHERAN HIGH SCHOOL	Ransomware	Education	WI, US	—	VCDB
2023-06-01	MINNESOTA OFFICE OF HIGHER EDUCATION	Ransomware	Education	MN, US	—	VCDB
2023-06-01	MISSISSIPPI COLLEGE	Ransomware	Education	MS, US	—	VCDB
2023-06-01	MISSOURI STATE UNIVERSITY	Ransomware	Education	MO, US	—	VCDB
2023-06-01	MISSOURI UNIVERSITY OF SCIENCE AND TECHNOLOGY	Ransomware	Education	MO, US	—	VCDB
2023-06-01	MOBERLY AREA COMMUNITY COLLEGE	Ransomware	Education	MO, US	—	VCDB
2023-06-01	MOLLOY UNIVERSITY	Ransomware	Education	NY, US	—	VCDB
2023-06-01	MONROE COLLEGE	Ransomware	Education	NY, US	—	VCDB
2023-06-01	MONTEREY PENINSULA COLLEGE	Ransomware	Education	CA, US	—	VCDB
2023-06-01	MONTREAT COLLEGE	Ransomware	Education	NC, US	—	VCDB
2023-06-01	MOUNT MARTY UNIVERSITY	Ransomware	Education	SD, US	—	VCDB
2023-06-01	MOUNT MARY UNIVERSITY	Ransomware	Education	WI, US	—	VCDB
2023-06-01	MOUNT SAINT MARY COLLEGE	Ransomware	Education	CA, US	—	VCDB
2023-06-01	MOUNT ST MARY’S UNIVERSITY	Ransomware	Education	MD, US	—	VCDB
2023-06-01	MPOWER FINANCING	Ransomware	Finance & Insurance	WA, US	—	VCDB
2023-06-01	MUHLENBERG COLLEGE	Ransomware	Education	PA, US	—	VCDB
2023-06-01	MYCOMPUTERCAREER AT COLUMBUS	Ransomware	Education	OH, 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 17:57 UTC.