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Exposed Data Types
Latest incidents.
The 18 breaches most recently added to Have I Been Pwned.
Double Counter
In October 2026, the Discord server protection service Double Counter suffered a data breach attributed to a vulnerability in the Metabase analytics tool. In its disclosure notice, Double Counter advised that attackers gained access to a subset of its data. A corpus of data was subsequently published publicly and contained 275k unique email addresses and Discord usernames. A small number of records belonging to paying subscribers whose purchases were processed via Stripe were also present and included names, countries and postcodes.
AfD
In September 2026, the German political party Alternative für Deutschland (AfD) suffered a data breach which exposed 345k unique email addresses. The following month, hundreds of gigabytes of data containing hundreds of thousands of emails and attachments was published online, with searchable AI-generated summaries and downloadable original files. An analysis of the incident reported that the breach was detected as early as 9 September, with a subsequent intrusion occurring five days later. In its public statement, AfD attributed the breach to an attack on a hosting provider, identified in subsequent reporting as the party-owned Alternita Dienstleistungs GmbH.
Medela
In September 2026, Swiss medical device company Medela was the target of a ShinyHunters "pay or leak" extortion campaign. The data allegedly obtained in the breach was later published publicly and included 424k unique email addresses belonging predominantly to healthcare professionals, Medela staff and leads. The exposed data consisted primarily of corporate contact information, including names, physical addresses and phone numbers, with some records also containing associated support tickets.
Neogen
In August 2026, the food and animal safety organisation Neogen was the target of a ShinyHunters "pay or leak" extortion attempt. The group later published data it claimed had been obtained from Neogen. The data consisted largely of corporate contact records and included 436k unique email addresses from mailing lists, employee records and other contacts.
Manchester Airports Group
In August 2026, Manchester Airports Group (MAG) disclosed a data breach impacting their services. The incident was later claimed by the FulcrumSec hacking group, who subsequently published email addresses and phone numbers relating to 8.8M customers of Manchester, Stansted and East Midlands airports. The data contained personal information relating to airport services, including vehicle registrations and parking history, Fast Track purchases and lounge bookings. In their disclosure notice, MAG advised that "at no point has passenger safety or aviation security been compromised".
McKesson
In August 2026, healthcare and pharmaceutical company McKesson was targeted in a ShinyHunters "pay or leak" extortion campaign. The group subsequently published a substantial corpus of data they alleged was sourced from the company, which included 6.4M unique email addresses among other personal and corporate data attributes. The impacted data related to a range of individuals and roles, including marketing campaign recipients, patients, staff and healthcare provider contacts. In McKesson's disclosure notice, the company advised it had identified unauthorised access to "certain third-party applications and the exfiltration of certain data was associated with a subset of customers within our Oncology & Multispecialty and Medical-Surgical business units", but had "reasonable assurance of no ongoing unauthorized activity".
Sharecare
In August 2026, the digital health company Sharecare was the target of a ShinyHunters "pay or leak" extortion campaign. The group subsequently published data it claimed was taken from Sharecare's systems, containing 318k unique email addresses. Most of the data consisted of B2B sales and marketing records with names, physical addresses, phone numbers, job titles and employers. The data also included a small number of Brazilian health insurance plan members, including dates of birth, genders, marital statuses and CPF numbers (Brazilian taxpayer identification numbers).
CyrusOne
In August 2026, data centre operator CyrusOne was the target of a ShinyHunters "pay or leak" extortion attempt. The group subsequently published data allegedly obtained from the company, which included 373k unique email addresses across records relating to users, sales leads and CyrusOne employees. The data largely consisted of corporate contact information, including names, physical addresses, phone numbers and job titles. It also included support tickets and other information related to the organisation's operations.
Chess.com (2026)
In August 2026, millions of records allegedly sourced from Chess.com were posted online. The data contained 7.3M rows with 4.6M unique email addresses, along with usernames, names, countries and data relating to users' Chess.com accounts. Analysis of the data suggested it had been obtained by scraping. When loaded into HIBP, 99% of the email addresses had already appeared in previous data breaches, further supporting the scraping theory. Read more about scrapes and data breaches.
Gîtes de France
In May 2026, the French holiday rental network Gîtes de France suffered a data breach affecting some of its departmental branches. The incident exposed hundreds of thousands of customer records, including 118k unique email addresses alongside names, phone numbers, postal addresses and booking details.
Crunchbase
In January 2026, the private company intelligence platform Crunchbase was targeted in a ShinyHunters "pay or leak" extortion attempt. Data allegedly obtained from the company was subsequently published publicly and included 560k unique email addresses, largely belonging to leads and business contacts. Other data included names, physical addresses, phone numbers, job titles, employers and LinkedIn profiles. Crunchbase later confirmed that a threat actor had exfiltrated documents from its corporate network.
Harvard
In November 2025, Harvard University suffered a data breach later linked to a ShinyHunters "pay or leak" extortion attempt. The data contained 851k unique email addresses relating to the university's alumni and fundraising systems, along with extensive profile information for donors, alumni, parents and some faculty, staff and students. In Harvard's disclosure notice, the university stated that the breach impacted "personal information such as email addresses, telephone numbers, home and business addresses, event attendance, details of donations to the University, and other biographical information pertaining to University fundraising and alumni engagement activities".
Assurance Retraite
In September 2024, the French national pension fund Assurance Retraite suffered a data breach affecting approximately 370k assistance beneficiaries. The data included 70k unique email addresses along with names, dates of birth, physical addresses, phone numbers, income levels, marital statuses, French social security numbers (NIR) and contact details of relatives or other nominated contacts. In its disclosure notice, Assurance Retraite attributed the breach to a compromised partner account.
Burger King Russia
In October 2024, news of a data breach exposing Burger King Russia customers broke following an August attack on the Mindbox marketing automation platform. The breach exposed 3.2M unique email addresses along with names, genders, dates of birth, phone numbers and approximate geolocations, with the data spanning 2018 to August 2024. Burger King Russia acknowledged the incident and advised it did not include payment or passport details.
Angel One
In July 2024, the Indian stock brokerage firm Angel One confirmed that data leaked online related to a breach that occurred in April 2023. The leaked data included 7.9M user records containing 6.8M unique email addresses, along with names, physical addresses, phone numbers, bank account numbers, Permanent Account Numbers (PANs) and portfolio holdings. Angel One emphasised that the breach "has no impact on client securities, funds, or credentials".
СберСпасибо (SberSpasibo)
In March 2023, data allegedly taken from СберСпасибо (SberSpasibo), the loyalty program of Russian bank Сбербанк (Sberbank), was published online. The data contained records relating to 48M users, including 3.3M unique email addresses alongside phone numbers and dates of birth. Data also included bank card numbers stored as unsalted SHA-1 hashes, plus loyalty program details such as membership dates and the redemption of bonus points for partner offers.
LimeLeads
In 2019, the now-defunct B2B marketing leads database service LimeLeads suffered a data breach due to an exposed, unsecured Elasticsearch server. The incident exposed tens of millions of records of largely corporate contact data containing 17.8M unique email addresses, along with phone numbers, employers, job titles and geographic locations including state, city and postcode.
YouHack
In May 2013, the Russian-language hacking forum YouHack suffered a data breach that was later redistributed as part of a larger corpus of data. The breach exposed 107k forum members' email addresses, usernames, IP addresses and MD5 password hashes, most of which were unsalted. Forum posts also contained email address and password pairs belonging to other victims, bringing the total to 7.2M unique email addresses.
In the news.
Recent breach headlines from Perigon. They have not been independently verified.
- Ransomware crew claims 5 banks and a CU; 2 confirm breachesamericanbanker.com·
- Minmed Group Cyberattack Hits Teleconsultation Systemsg.headtopics.com·
- Flight booking data breach exposes passenger details, fuels phishing scamssg.headtopics.com·
- ESXi ransomware needed no hypervisor flaw, Kaspersky saystbreak.com·
- Richmond Public Schools says forensic audit is underway after October cyberattack12onyourside.com·
- Sega data breach: Everything we know so far as 2.2 million customers exposeditpro.com·
- SK Shieldus Expands Decryption Tool for New ArgonWiper Ransomwareen.sedaily.com·
- Why Backups alone cannot save Healthcare Providers from Ransomwarecybersecurity-insiders.com·
Largest data breaches.
The breaches in Have I Been Pwned that exposed the most accounts.
Synthient Credential Stuffing Threat Data
Collection #1
Verifications.io
Onliner Spambot
Data Enrichment Exposure From PDL Customer
Exploit.In
Anti Public Combo List
Most commonly exposed data types
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About this tracker.
This tracker follows data breaches affecting organizations worldwide.
Verified breach records
From Have I Been Pwned, which verifies each breach against the leaked data itself.
Unverified headlines
News items come from Perigon and have not been independently verified.
Data as of Nov 11, 2026