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; 473 breaches reported to HHS
Material incidents, US listed firms: 23; 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 sectorHealthcare748 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 / intrusion793
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 / intrusion793
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 / intrusion793
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	681	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 (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

438 incidents match, newest first.

Date	Organisation	Type of attack	Sector	Where	Affected	Source
2011-07-01	Serco Inc.	Malware	Professional Services	VA, US	124k records	VCDB
2011-06-30	Valpak	Insider misuse	Professional Services	FL, US	—	VCDB
2011-06-25	Gail Gillespie and Associates, LLC	Theft or loss	Professional Services	TX, US	2,334 records	VCDB
2011-04-15	Silverpop Systems, Inc. Health and Welfare Plan	Theft or loss	Professional Services	GA, US	884 records	VCDB
2011-01-29	NYU Langone Medical Center	Theft or loss	Professional Services	NY, US	640 records	VCDB
2011-01-01	Coalition of Law Enforcement and Retail	Hacking / intrusion	Professional Services	FL, US	2,400 records	VCDB
2011-01-01	Duowan	Hacking / intrusion	Professional Services	CN	8.0M records	VCDB
2011-01-01	Gattison & Associates	Insider misuse	Professional Services	US	557 records	VCDB
2011-01-01	Genesis Clinical Laboratory	Hacking / intrusion	Professional Services	IL, US	1,070 records	VCDB
2011-01-01	NHS Shared Business Services	Error / misconfiguration	Professional Services	GB	—	VCDB
2011-01-01	Premier Tax	Insider misuse	Professional Services	AL, US	1,000 records	VCDB
2011-01-01	Segmark Solutions	Hacking / intrusion	Professional Services	CT, US	—	VCDB
2011-01-01	Waters, Kraus & Paul	Insider misuse	Professional Services	TX, US	—	VCDB
2010-12-10	Ochsner Health System	Error / misconfiguration	Professional Services	LA, US	9,475 records	VCDB
2010-12-01	Epsilon Data Management, LLC	Malware	Professional Services	TX, US	5.0M records	VCDB
2010-11-22	Benefit Resources, Inc.	Error / misconfiguration	Professional Services	SC, US	16k records	VCDB
2010-10-19	Johns Hopkins University Applied Physics Laboratory Medical and Dental Insurance Plan	Error / misconfiguration	Professional Services	MD, US	692 records	VCDB
2010-08-04	Trinity Health Corporation Welfare Benefit Plan	Error / misconfiguration	Professional Services	MI, US	1,073 records	VCDB
2010-06-01	Goldthwait Associates	Error / misconfiguration	Professional Services	MA, US	—	VCDB
2010-04-01	Serco Inc.	Theft or loss	Professional Services	GA, US	207k records	VCDB
2010-01-01	Greene and Letts Law Firm	Error / misconfiguration	Professional Services	IL, US	—	VCDB
2010-01-01	Legal Aid Ontario	Insider misuse	Professional Services	CA	1 records	VCDB
2010-01-01	Legal Aid Ontario	Insider misuse	Professional Services	CA	1 records	VCDB
2010-01-01	Platinum Solutions	Hacking / intrusion	Professional Services	VA, US	—	VCDB
2010-01-01	Trinity Mirror Digital Recruitment	Hacking / intrusion	Professional Services	GB	4.3M records	VCDB
2010-01-01	Wick and Trautwein	Malware	Professional Services	CO, US	—	VCDB
2009-01-01	Indigent Inmate	Insider misuse	Professional Services	GA, US	—	VCDB
2009-01-01	Unknown	Insider misuse	Professional Services	AZ, US	—	VCDB
2008-11-01	Los Alamos National Laboratory	Insider misuse	Professional Services	NM, US	—	VCDB
2008-01-01	C.W. ADVERTISING AGENCY LTD	Theft or loss	Professional Services	CA	32.0M records	VCDB
2008-01-01	Commidea Ltd	Malware	Professional Services	GB	30.0M records	VCDB
2008-01-01	Grant Income Tax Bookkeeping and Check Cash	Insider misuse	Professional Services	KY, US	—	VCDB
2008-01-01	Logica	Hacking / intrusion	Professional Services	SE	31k records	VCDB
2007-04-01	Oligil Tax Services	Insider misuse	Professional Services	MD, US	—	VCDB
2003-08-01	Acxiom Corp	Hacking / intrusion	Professional Services	US	—	VCDB
2003-06-01	Acxiom Corp	Hacking / intrusion	Professional Services	US	300 records	VCDB
2002-01-11	grc.com	Hacking / intrusion	Professional Services	CA, US	—	VCDB
2001-05-04	grc.com	Hacking / intrusion	Professional Services	CA, 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 2026-10-14 02:36 UTC.