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
Credential compilation (no single victim)5
Infostealer logs5
Theft or loss4
Error / misconfiguration1

Hacking / intrusion799
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 / intrusion799
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	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
2017-01-01	California Employment Development Department	Insider misuse	Healthcare	CA, US	—	VCDB
2017-01-01	Campbell River High school	Error / misconfiguration	Education	US	—	VCDB
2017-01-01	Candid Board	Error / misconfiguration	Information	GB	—	VCDB
2017-01-01	Chicago Election Board	Error / misconfiguration	Public Administration	IL, US	1.8M records	VCDB
2017-01-01	Christchurch Infant School	Error / misconfiguration	Healthcare	GB	114 records	VCDB
2017-01-01	Circle K	Theft or loss	Retail	NC, US	—	VCDB
2017-01-01	Cleveland Heights Police Department	Error / misconfiguration	Public Administration	OH, US	—	VCDB
2017-01-01	CloudPets cloudpets.com	Data breach (cause not stated)	—	—	584k accounts	HIBP
2017-01-01	Coca-Cola	Insider misuse	Manufacturing	US	8,000 records	VCDB
2017-01-01	Coroner of Sebastian County	Error / misconfiguration	Public Administration	AK, US	—	VCDB
2017-01-01	Crotched Mountain Foundation	Phishing / social engineering	Healthcare	NH, US	1,000 records	VCDB
2017-01-01	Cypriot Brokerage	Hacking / intrusion	Finance & Insurance	CY	2,200 records	VCDB
2017-01-01	Deep Root Analytics	Error / misconfiguration	Professional Services	US	198.0M records	VCDB
2017-01-01	Defense Point Security, LLC	Phishing / social engineering	Professional Services	VA, US	—	VCDB
2017-01-01	Desert Orthopedics	Insider misuse	Healthcare	OR, US	—	VCDB
2017-01-01	Dr. Davidson	Insider misuse	Healthcare	CA, US	—	VCDB
2017-01-01	Dr. Michael Lai	Error / misconfiguration	Healthcare	CA	60 records	VCDB
2017-01-01	Dumfries and Galloway Council	Error / misconfiguration	Public Administration	GB	—	VCDB
2017-01-01	FFrees	Error / misconfiguration	Finance & Insurance	GB	95k records	VCDB
2017-01-01	Flight Centre	Error / misconfiguration	Transportation	AU	—	VCDB
2017-01-01	Gannett	Phishing / social engineering	Information	VA, US	18k records	VCDB
2017-01-01	Government Digital Service	Error / misconfiguration	Public Administration	GB	—	VCDB
2017-01-01	Gozo General Hospital	Phishing / social engineering	Healthcare	MT	1 records	VCDB
2017-01-01	Grey Eagle Casino	Hacking / intrusion	Entertainment	CA	—	VCDB
2017-01-01	Groupize	Error / misconfiguration	Professional Services	MA, US	—	VCDB
2017-01-01	Gutu Magistrate	Theft or loss	Public Administration	Unknown	—	VCDB
2017-01-01	Hardware Zone	Hacking / intrusion	Information	SG	685k records	VCDB
2017-01-01	Health Sciences North	Insider misuse	Healthcare	CA	—	VCDB
2017-01-01	HealthNow Networks	Insider misuse	Administrative	FL, US	918k records	VCDB
2017-01-01	Heart Cup Cafe	Insider misuse	Retail	IN	9 records	VCDB
2017-01-01	Hub4Tech hub4tech.com	Data breach (cause not stated)	—	—	37k accounts	HIBP
2017-01-01	Independence School District	Phishing / social engineering	Education	MO, US	—	VCDB
2017-01-01	Independent Inquiry into Child Sexual Abuse	Error / misconfiguration	Public Administration	GB	1 records	VCDB
2017-01-01	Inner City Family Services	Insider misuse	Healthcare	DC, US	—	VCDB
2017-01-01	Ipswich Hospital	Insider misuse	Healthcare	GB	9 records	VCDB
2017-01-01	Jacksonville Sheriff's Office	Insider misuse	Public Administration	FL, US	1 records	VCDB
2017-01-01	July Systems	Error / misconfiguration	Professional Services	US	10k records	VCDB
2017-01-01	LKM Medical	Theft or loss	Retail	OK, US	3,400 records	VCDB
2017-01-01	Laing O'Rourke	Theft or loss	Construction	GB	—	VCDB
2017-01-01	Lakes District Hospital and Health Centre	Insider misuse	Healthcare	CA	150 records	VCDB
2017-01-01	Lane County Health and Human Services	Error / misconfiguration	Public Administration	OR, US	715 records	VCDB
2017-01-01	Lanterman and Allen Funeral Home	Insider misuse	Other Services	PA, US	16 records	VCDB
2017-01-01	Larimer County Clerk and Recorder	Error / misconfiguration	Public Administration	CO, US	—	VCDB
2017-01-01	LaunchPoint Ventures	Insider misuse	Professional Services	US	19k records	VCDB
2017-01-01	Laurentian University	Hacking / intrusion	Education	CA	—	VCDB
2017-01-01	Little Monsters littlemonsters.com	Data breach (cause not stated)	—	—	996k accounts	HIBP
2017-01-01	LiveJournal livejournal.com	Data breach (cause not stated)	—	—	26.4M accounts	HIBP
2017-01-01	London Borough of Newham	Error / misconfiguration	Public Administration	GB	—	VCDB
2017-01-01	Los Angeles Superior Court	Hacking / intrusion	Public Administration	CA, US	—	VCDB
2017-01-01	M.G.A.R. Ltd	Error / misconfiguration	Professional Services	IL	1.0M 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 2026-10-17 14:26 UTC.