Lumin PDF – 15,453,048 breached accounts

In April 2019, the PDF management service Lumin PDF suffered a data breach. The breach wasn't publicly disclosed until September when 15.5M records of user data appeared for download on a popular hacking forum. The data had been left publicly exposed in a MongoDB instance after which Lumin PDF was allegedly been “contacted multiple times, but ignored all the queries”. The exposed data included names, email addresses, genders, spoken language and either a bcrypt password hash or Google auth token. The data was provided to HIBP by a source who requested it be attributed to “JimScott.Sec@protonmail.com”.

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KiwiFarms – 4,606 breached accounts

In September 2019, the forum for discussing “lolcows” (people who can be milked for laughs) Kiwi Farms suffered a data breach. The disclosure notice advised that email and IP addresses, dates of birth and content created by members were all exposed in the incident.

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Minehut – 396,533 breached accounts

In May 2019, the Minecraft server website Minehut suffered a data breach. The company advised a database backup had been obtained after which they subsequently notified all impacted users. 397k email addresses from the incident were provided to HIBP.

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Void.to – 95,431 breached accounts

In June 2019, the hacking website Void.to suffered a data breach. There were 95k unique email addresses spread across 86k forum users and other tables in the database. A rival hacking website claimed responsibility for breaching the MyBB based forum which disclosed email and IP addresses, usernames, private messages and passwords stored as either salted MD5 or bcrypt hashes.

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Poshmark – 36,395,491 breached accounts

In mid-2018, social commerce marketplace Poshmark suffered a data breach that exposed 36M user accounts. The compromised data included email addresses, names, usernames, genders, locations and passwords stored as bcrypt hashes. The data was provided to HIBP by a source who requested it be attributed to “JimScott.Sec@protonmail.com”.

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Mastercard Priceless Specials – 89,388 breached accounts

In August 2019, the German Mastercard bonus program “Priceless Specials” suffered a data breach. Personal data on almost 90k program members was subsequently extensively circulated online and included names, email and IP addresses, phone numbers and partial credit card data. Following the incident, the program was subsequently suspended.

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XKCD – 561,991 breached accounts

In July 2019, the forum for webcomic XKCD suffered a data breach that impacted 562k subscribers. The breached phpBB forum leaked usernames, email and IP addresses and passwords stored in MD5 phpBB3 format. The data was provided to HIBP by white hat security researcher and data analyst Adam Davies.

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Coinmama – 478,824 breached accounts

In August 2017, the crypto coin brokerage service Coinmama suffered a data breach that impacted 479k subscribers. The breach was discovered in February 2019 with exposed data including email addresses, usernames and passwords stored as MD5 WordPress hashes. The data was provided to HIBP by white hat security researcher and data analyst Adam Davies.

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Chegg – 39,721,127 breached accounts

In April 2018, the textbook rental service Chegg suffered a data breach that impacted 40 million subscribers. The exposed data included email addresses, usernames, names and passwords stored as unsalted MD5 hashes. The data was provided to HIBP by a source who requested it be attributed to “JimScott.Sec@protonmail.com”.

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Cracked.to – 749,161 breached accounts

In July 2019, the hacking website Cracked.to suffered a data breach. There were 749k unique email addresses spread across 321k forum users and other tables in the database. A rival hacking website claimed responsibility for breaching the MyBB based forum which disclosed email and IP addresses, usernames, private messages and passwords stored as bcrypt hashes.

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