2022-05 marked when Mangatoon acknowledged an intrusion that reached nearly 23 million records. In May 2022, the Hong Kong based Manga service Mangatoon suffered a security incident that revealed 23M subscriber records.…
Security reports tie the Manipulated Caiman incident to 2023-07, impacting close to 39.9 million records overall. In July 2023, Perception Point reported on a phishing operation dubbed "Manipulated Caiman". Targeting pr…
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…
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…
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…
Mecho Download traced the breach to 2013-10, estimating that about 437.9 thousand records were affected. In October 2013, the (now defunct) downloads website "Mecho Download" suffered a security incident that revealed 4…
2023-03 marked when MediaWorks acknowledged an intrusion that reached nearly 162.7 thousand records. In March 2024, millions of rows of data from the New Zealand media company MediaWorks was publicly posted to a popular…
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