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

805 incidents match, newest first.

Date	Organisation	Type of attack	Sector	Where	Affected	Source
2012-10-01	TooJay	Insider misuse	Information	FL, US	—	VCDB
2012-09-24	4Access, National Processing Company	Hacking / intrusion	Information	KY, US	—	VCDB
2012-09-13	Square Enix Holdings Co Ltd	Hacking / intrusion	Information	JP	—	VCDB
2012-09-01	Telco Service Holdings Pty Ltd	Error / misconfiguration	Information	AU	462 records	VCDB
2012-08-15	Zynga	Insider misuse	Information	CA, US	760 records	VCDB
2012-08-01	Blizzard Entertainment, Inc.	Hacking / intrusion	Information	CA, US	14.0M records	VCDB
2012-07-17	Maplesoft	Malware	Information	CA	—	VCDB
2012-07-12	Verizon	Hacking / intrusion	Information	NY, US	3.0M records	VCDB
2012-07-01	AAPT	Hacking / intrusion	Information	AU	—	VCDB
2012-05-27	bzpower.com	Hacking / intrusion	Information	FL, US	9,000 records	VCDB
2012-05-16	csgameservs.com	Hacking / intrusion	Information	BR	5,000 records	VCDB
2012-05-01	DJArts	Hacking / intrusion	Information	CA	3,178 records	VCDB
2012-04-28	eUKHost	Hacking / intrusion	Information	GB	1 records	VCDB
2012-04-20	f-1racers.net	Hacking / intrusion	Information	GB	—	VCDB
2012-04-05	uzfiles.com	Hacking / intrusion	Information	UZ	4,130 records	VCDB
2012-04-03	Morningstar Document Research	Hacking / intrusion	Information	IL, US	2,300 records	VCDB
2012-03-19	SIRIUS XM Radio Inc.	Insider misuse	Information	NY, US	234 records	VCDB
2012-03-16	Christian Teen Forums	Hacking / intrusion	Information	BZ	18k records	VCDB
2012-03-16	Unknown	Insider misuse	Information	VA, US	—	VCDB
2012-03-08	Symantec Corporation	Unknown	Information	CA, US	—	VCDB
2012-03-06	Panda Security	Hacking / intrusion	Information	ES	35 records	VCDB
2012-03-03	Linode	Hacking / intrusion	Information	NJ, US	8 records	VCDB
2012-03-02	cine.com.pa	Hacking / intrusion	Information	PA	1,200 records	VCDB
2012-02-17	Rambler	Hacking / intrusion	Information	RU	98.2M records	VCDB
2012-02-15	Hostgator	Malware	Information	TX, US	—	VCDB
2012-02-06	Court ADR Resource Center	Hacking / intrusion	Information	IL, US	30 records	VCDB
2012-02-02	Bach Khoa Internetwork Security Company	Hacking / intrusion	Information	VN	—	VCDB
2012-02-01	Digital Playground	Hacking / intrusion	Information	CA, US	72k records	VCDB
2012-02-01	KT Corporation	Hacking / intrusion	Information	KR	8.7M records	VCDB
2012-02-01	Netfleet	Hacking / intrusion	Information	AU	—	VCDB
2012-01-31	Blacknight	Hacking / intrusion	Information	IE	40k records	VCDB
2012-01-27	Koninklijke KPN N.V	Hacking / intrusion	Information	NL	500 records	VCDB
2012-01-19	Dream Host	Hacking / intrusion	Information	CA, US	—	VCDB
2012-01-16	KPN	Hacking / intrusion	Information	NL	539 records	VCDB
2012-01-12	FileDen	Hacking / intrusion	Information	GA, US	4,500 records	VCDB
2012-01-07	CoveritLive	Hacking / intrusion	Information	CA	—	VCDB
2012-01-01	460 Productions	Hacking / intrusion	Information	VA, US	216 records	VCDB
2012-01-01	AAPT	Hacking / intrusion	Information	AU	—	VCDB
2012-01-01	Accucom Corporation	Hacking / intrusion	Information	MA, US	—	VCDB
2012-01-01	Adobe	Hacking / intrusion	Information	CA, US	150k records	VCDB
2012-01-01	Adobe Systems Inc	Hacking / intrusion	Information	CA, US	150k records	VCDB
2012-01-01	Adult Insider Network	Hacking / intrusion	Information	US	11k records	VCDB
2012-01-01	Connextions	Insider misuse	Information	FL, US	6,000 records	VCDB
2012-01-01	Cricfire	Hacking / intrusion	Information	PA	3,452 records	VCDB
2012-01-01	Devil's Cafe	Hacking / intrusion	Information	IN	4,940 records	VCDB
2012-01-01	DiarioBasta.com	Hacking / intrusion	Information	MX	144 records	VCDB
2012-01-01	DirectTV	Hacking / intrusion	Information	CA, US	300 records	VCDB
2012-01-01	Dropbox	Hacking / intrusion	Information	CA, US	68.7M records	VCDB
2012-01-01	Electronic Arts	Error / misconfiguration	Information	CA, US	—	VCDB
2012-01-01	Elsevier	Hacking / intrusion	Information	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 2026-10-14 02:59 UTC.