Data Breaches

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 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.

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".

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.

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.

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.

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.

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).

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.

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".

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.

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.

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.

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.

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.

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.

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

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".

In August 2026, the French intellectual property software and services company Questel was the target of a ShinyHunters "pay or leak" extortion campaign. The group subsequently published an extensive corpus of data they alleged was obtained from the company, largely comprising corporate contact information associated with sales leads, support cases and marketing activities, with 1.2M unique email addresses. The data also included names, employers and job titles, along with physical addresses and phone numbers.

In August 2026, clothing retailer Carhartt was the target of a ShinyHunters "pay or leak" extortion campaign. The group subsequently published data allegedly obtained from the company including 12.9M unique email addresses, names, phone numbers and physical addresses. The published corpus also contained millions of synthetic records that did not relate to real individuals and were excluded from the breach.

In July 2025, the German news service NIUS suffered a data breach which was subsequently leaked publicly. The data included 6k unique email addresses along with names, physical addresses and payment details for purchases including either IBANs or partial credit card data (masked card number, type and expiry).

In mid-2026, hundreds of thousands of user records allegedly sourced from Golf Canada began circulating via Telegram. The data included 569k unique email addresses along with names, usernames, dates of birth, genders and approximate geographic locations (city, province and postcode). Golf Canada didn't respond to multiple attempts to make contact, and it remains unclear whether the data was obtained via unintentionally exposed website features or a security vulnerability.

In August 2026, the Organization for Transformative Works (OTW) identified unauthorised access to the Fanlore wiki it operates. The breach resulted in the exposure of 145k unique email addresses along with usernames and passwords stored as either MD5 or PBKDF2 hashes. OTW self-submitted the exposed data to HIBP.

In August 2026, Australian beauty retailer Oz Hair and Beauty was the target of an xpl0itrs extortion attack. The group subsequently published data allegedly obtained from the company, which included 2M unique email addresses along with names, phone numbers, geographic locations (suburb and postcode) and purchases.

In July 2026, the cloud-based business communications platform RingCentral was the target of a ShinyHunters "pay or leak" extortion campaign. The group subsequently published data they claimed was obtained from the platform, which included 1.6M unique email addresses along with names, physical addresses and phone numbers. In their disclosure notice, RingCentral advised that the incident affected "a limited portion of RingCentral customers" and that it was communicating directly with those affected.

In August 2026, the Alcon eye care company was named in a ShinyHunters "pay or leak" extortion campaign. The group subsequently published data allegedly sourced from Alcon containing 218k unique email addresses along with other largely corporate B2B contact fields, including name, phone number and physical address.

In July 2026, Brinks Home was targeted in a ShinyHunters "pay or leak" extortion campaign. The group subsequently published data they alleged was taken from the company, including 732k unique email addresses and other personal information relating to leads, customers and Brinks staff such as name, phone numbers and physical addresses. The data also included purchases from Brinks along with partial credit card data (last 4 digits, card type and expiry). In Brinks' disclosure notice, they acknowledged the incident and risk of disclosure, and advised that they would notify impacted parties "consistent with applicable law".

In July 2026, Exact Sciences (now owned by Abbott Laboratories) was the target of a ShinyHunters "pay or leak" extortion campaign. The group claimed to have obtained data from the company's cancer diagnostics business, which they later published publicly. The breach contained 10.9M unique email addresses belonging to customers, patients and healthcare providers, along with names, addresses, phone numbers and health records. Abbott subsequently published a public notice advising that "some of the impacted files contain personal information and/or personal health information" and that more specific information would follow once their review of the incident was complete. For context, Exact Sciences is the maker of the Cologuard at-home colorectal cancer screening test.

In June 2026, Inter-Con Security was targeted in a ShinyHunters “pay or leak” extortion campaign. The group subsequently published data it alleged was taken from the company, including 276k unique email addresses along with names, physical addresses, job titles and phone numbers. The data encompassed a combination of contacts, internal users and leads.

In July 2026, the Russian VPN service SplitVPN (previously known as NotVPN) suffered a data breach. The incident exposed millions of customer records, including 865k unique email addresses. Other impacted data included IP addresses, the user's country, and partial payment card data (first 6 and last 4 digits plus expiry date).

In June 2026, Houston City College was the target of a ShinyHunters "pay or leak" extortion campaign. Data allegedly obtained from the college was later published publicly and included 832k unique email addresses along with names, addresses, phone numbers, academic records, and other personal information relating to both current students and alumni.

In November 2025, AI music generation tool Suno suffered a data breach that later came to light in July the following year. The data contained over 55M unique email addresses. Phone numbers were also present where they had been used as the sign-up method. Although representing a small portion of the corpus, the breach also included tens of thousands of Stripe records relating to purchases, containing names, physical addresses, purchase amounts and partial credit card data including the card type, expiry date and last 4 digits. The company advised that "Suno does not have access to customers' full credit card numbers in Stripe".

In March 2026, hackers claimed they had obtained data from the gig economy platform Paidwork which they then listed for sale. Almost 11GB of data allegedly obtained from the platform was subsequently posted publicly in July and contained over 23M unique email addresses. The breach also included a broad range of other data relating to the operation of the platform including user profile data, banking information, payout history for workers and passwords stored as bcrypt hashes.

In July 2026, electronic test and measurement equipment company Fluke was targeted in a ShinyHunters "pay or leak" extortion campaign. The group subsequently published more than 100GB of data allegedly taken from the company. The corpus contained largely corporate contact information, including over 800k unique email addresses, names, phone numbers and physical addresses. A large collection of support cases was also present.

In June 2026, a party claiming to have access to data from Goose Creek Candle Company sent emails to a number of the company's customers, claiming the company had a security vulnerability and suffered a data breach. The data was subsequently sent to Have I Been Pwned and contained 6.6M unique email addresses along with names, phone numbers, physical addresses, order IDs and total spent. The data appears to have been obtained from the company's Shopify instance. Goose Creek is aware of the reports but was unable to provide Have I Been Pwned with any further information at the time of publication.

8-K filing from Phoenix Education Partners, Inc., filed 2026-07-14. SEC EDGAR full-text match on cybersecurity incident disclosure language.

In June 2026, Glendale Community College was the target of a ShinyHunters "pay or leak" extortion campaign. Data allegedly obtained from Glendale was later published online and included almost 800k unique email addresses along with various other data fields, including names, addresses, phone numbers, Social Security numbers and other information relating to student enrolments. In its disclosure notice, the college advised that "the potentially impacted information may vary for each individual and may include all or just one of the above-listed types of information".

8-K filing from NAVIENT CORP, filed 2026-07-02. SEC EDGAR full-text match on cybersecurity incident disclosure language.

8-K filing from S&P Global Inc., filed 2026-07-02. SEC EDGAR full-text match on cybersecurity incident disclosure language.

8-K filing from Mobility Global Inc., filed 2026-07-02. SEC EDGAR full-text match on cybersecurity incident disclosure language.

8-K filing from SOUNDHOUND AI, INC., filed 2026-07-02. SEC EDGAR full-text match on cybersecurity incident disclosure language.

8-K filing from LIVEPERSON INC, filed 2026-07-02. SEC EDGAR full-text match on cybersecurity incident disclosure language.

8-K filing from Alcoa Corp, filed 2026-07-02. SEC EDGAR full-text match on cybersecurity incident disclosure language.

Hacking/IT Incident affecting 602 individuals via Network Server. Business Associate in CO. Reported to HHS OCR under HITECH Act breach notification requirements.

8-K filing from ESS Tech, Inc., filed 2026-06-23. SEC EDGAR full-text match on cybersecurity incident disclosure language.

Hacking/IT Incident affecting 501 individuals via Network Server. Healthcare Provider in NY. Reported to HHS OCR under HITECH Act breach notification requirements.

Unauthorized Access/Disclosure affecting 21027 individuals via Network Server. Health Plan in IL. Reported to HHS OCR under HITECH Act breach notification requirements.

Hacking/IT Incident affecting 37384 individuals via Email. Health Plan in CT. Reported to HHS OCR under HITECH Act breach notification requirements.

Hacking/IT Incident affecting 2045 individuals via Network Server. Business Associate in TX. Reported to HHS OCR under HITECH Act breach notification requirements.

Hacking/IT Incident affecting 500 individuals via Network Server. Healthcare Provider in MO. Reported to HHS OCR under HITECH Act breach notification requirements.