CyrusOne – 373,460 breached accounts

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 relatin…

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Double Counter – 274,922 breached accounts

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 …

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Angel One – 6,765,054 breached accounts

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 add…

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Medela – 423,947 breached accounts

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 predomin…

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LimeLeads – 17,838,396 breached accounts

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…

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Chess.com (2026) – 4,653,212 breached accounts

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 t…

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McKesson – 6,404,340 breached accounts

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…

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Questel – 1,226,209 breached accounts

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 co…

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