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
2018-02-22	Manduka	Malware	Wholesale	CA, US	9,616 records	VCDB
2018-02-21	Oregon Department of Revenue	Insider misuse	Public Administration	US-OR, US	15k records	VCDB
2018-02-19	2,844 Separate Data Breaches	Credential compilation (no single victim)	—	—	80.1M accounts	HIBP
2018-02-19	SAMBA	Error / misconfiguration	Public Administration	MD, US	14k records	VCDB
2018-02-19	SAMBA Federal Employee Benefit Association	Error / misconfiguration	Finance & Insurance	MD, US	14k records	VCDB
2018-02-13	SunTrust Bank	Theft or loss	Finance & Insurance	FL, US	11 records	VCDB
2018-02-12	Florida Virtual School flvs.net	Data breach (cause not stated)	—	—	543k accounts	HIBP
2018-02-11	Innovative Artists	Theft or loss	Entertainment	US	—	VCDB
2018-02-07	North American Risk Services, Inc.	Hacking / intrusion	Finance & Insurance	CA, US	604 records	VCDB
2018-02-06	Chesapeake Regional Health Care Sleep Center	Theft or loss	Healthcare	VA, US	2,000 records	VCDB
2018-02-05	DC Public Schools	Error / misconfiguration	Education	DC, US	1,100 records	VCDB
2018-02-05	Wisconsin Department of Health Services	Insider misuse	Public Administration	WI, US	779 records	VCDB
2018-02-04	Autocentrum.pl autocentrum.pl	Data breach (cause not stated)	—	—	144k accounts	HIBP
2018-02-01	Creation Entertainment	Hacking / intrusion	Entertainment	CA, US	—	VCDB
2018-02-01	Dover-Phila Federal Credit Union	Theft or loss	Finance & Insurance	PA, US	—	VCDB
2018-02-01	Jobandtalent jobandtalent.com	Data breach (cause not stated)	—	—	11.0M accounts	HIBP
2018-02-01	MyFitnessPal myfitnesspal.com	Data breach (cause not stated)	—	—	143.6M accounts	HIBP
2018-02-01	Oxfam	Error / misconfiguration	Other Services	HT	—	VCDB
2018-02-01	PopSugar, Inc.	Hacking / intrusion	Information	CA, US	124k records	VCDB
2018-02-01	Popsugar Inc	Unknown	Information	US-CA, US	124k records	VCDB
2018-02-01	Sheffield Credit Union	Hacking / intrusion	Finance & Insurance	GB	15k records	VCDB
2018-02-01	St. Louis Community College	Error / misconfiguration	Education	US-MO, US	362 records	VCDB
2018-01-30	JoomlArt joomlart.com	Data breach (cause not stated)	—	—	22k accounts	HIBP
2018-01-30	PropTiger proptiger.com	Data breach (cause not stated)	—	—	2.2M accounts	HIBP
2018-01-30	Rockdale Independent School District	Phishing / social engineering	Education	TX, US	350 records	VCDB
2018-01-28	Domain Factory	Hacking / intrusion	Information	Unknown	—	VCDB
2018-01-25	BB&T	Theft or loss	Finance & Insurance	VA, US	—	VCDB
2018-01-23	Christ the King Manor	Phishing / social engineering	Healthcare	PA, US	—	VCDB
2018-01-21	Club Penguin Rewritten (January 2018) cprewritten.net	Data breach (cause not stated)	—	—	1.7M accounts	HIBP
2018-01-16	ALDI US	Theft or loss	Retail	US-PA, US	—	VCDB
2018-01-16	Allied Medical Associates	Error / misconfiguration	Healthcare	CT, US	72 records	VCDB
2018-01-14	Careem	Hacking / intrusion	Transportation	AE	14.6M records	VCDB
2018-01-14	Manitowac County	Hacking / intrusion	Public Administration	WI, US	438 records	VCDB
2018-01-12	Front Range Dermatology Associates	Insider misuse	Healthcare	CO, US	—	VCDB
2018-01-11	OnePlus	Malware	Manufacturing	CN	40k records	VCDB
2018-01-10	Weis Markets	Theft or loss	Retail	MD, US	—	VCDB
2018-01-10	Hancock Health	Ransomware	Healthcare	IN, US	—	VCDB
2018-01-10	Steuben County Adult Protective Home Care Unit	Theft or loss	Healthcare	NY, Unknown	—	VCDB
2018-01-09	Massachusetts Clean Energy Center	Phishing / social engineering	Utilities	MA, US	—	VCDB
2018-01-02	Inogen	Hacking / intrusion	Wholesale	CA, US	30k records	VCDB
2018-01-01	51Jobs.com	Hacking / intrusion	Professional Services	CN	1.9M records	VCDB
2018-01-01	AT&T	Phishing / social engineering	Retail	Unknown	—	VCDB
2018-01-01	Aberdeen City Council	Error / misconfiguration	Public Administration	GB	947 records	VCDB
2018-01-01	Abine	Error / misconfiguration	Information	MA, US	2.4M records	VCDB
2018-01-01	Algonquin College	Hacking / intrusion	Education	CA	—	VCDB
2018-01-01	Amex India	Error / misconfiguration	Finance & Insurance	IN	700k records	VCDB
2018-01-01	Anchor Bank	Theft or loss	Finance & Insurance	WA, US	—	VCDB
2018-01-01	Andhra Pradesh Medicinal and Aromatic Plants Board	Error / misconfiguration	Public Administration	IN	23k records	VCDB
2018-01-01	Argentinian Interior Ministry	Hacking / intrusion	Public Administration	AR	45.0M records	VCDB
2018-01-01	Associates in Medicine PA	Insider misuse	Healthcare	TX, 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 2026-10-17 02:53 UTC.