In December 2018, Mappery, an online platform dedicated to map sharing and cartography enthusiasts, suffered a data breach that compromised over 205,000 user accounts. The exposed information included email addresses an…
2018-12 marked when Mappery acknowledged an intrusion that reached nearly 205.2 thousand records. In December 2018, the mapping website Mappery suffered a security incident that revealed over 205k unique email addresses…
Around 2023-08, investigators concluded that Market Moveis had exposed roughly 28.2 thousand records. In August 2023, the Portuguese home decor company Market Moveis suffered a security incident that impacted 28k record…
The incident is one of several breaches affecting Salesforce in 2025. A group calling itself "Scattered LAPSUS$ Hunters" released a limited sample of the stolen database on October 3, 2025. The records have since been i…
For Mashable, the timeline centers on 2020-06 with approximately 1.4 million records discovered in the cache. In approximately mid-2020, Mashable suffered a security incident that subsequently turned up publicly in Nove…
The Mass General Brigham Health Plan data breach, linked to the exploitation of a vulnerability in Progress Software’s MOVEit Transfer platform by the Cl0p ransomware group, exposed extensive patient information managed…
2017-03 marked when Master Deeds acknowledged an intrusion that reached nearly 2.3 million records. In March 2017, a 27GB database backup file named "Master Deeds" was sent to HIBP by a supporter of the project. Upon de…
Security reports tie the Mastercard Priceless Specials incident to 2019-08, impacting close to 89.4 thousand records overall. In August 2019, the German Mastercard bonus program "Priceless Specials" suffered a security…
2016-02 marked when Mate1.com acknowledged an intrusion that reached nearly 27.4 million records. In February 2016, the dating site mate1.com suffered a huge security incident resulting in the disclosure of over 27 mill…
2016-02-01 marked the discovery that Mate1.com had leaked close to 27,403,959 records during a breach. In February 2016, mate1.com, a dating website, experienced a major security incident. The incident revealed the pers…
For Mathway, the timeline centers on 2020-01 with approximately 25.7 million records discovered in the cache. In January 2020, the math solving website Mathway suffered a security incident that revealed over 25M records…
Around 2020-01-01, investigators linked a data spill at Mathway to nearly 25,866,113 compromised records. In January 2020, Mathway experienced a security incident that resulted in the spill of over 25 million records. C…
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