Mangatoon, a comic-reading platform, has suffered a data breach that exposed account information belonging to 23 million users. A well-known hacker group called "pompompurin" claimed that they stole the database from a server using weak credentials, which caused the data breach. According to the data breach notification service 'Have I Been Pwned (HIBP)' report, 23M Mangatoon accounts were breached in May 2022, exposing user names, email addresses, genders, usernames, social media accounts, and authentication tokens from social logins, as well as, it also added 23 million Mangatoon accounts to their platform in July 2022 and now allows Mangatoon users to check if their account was compromised by searching for their email addresses. In addition, Pompompurin shared samples of the database, which have been confirmed to be valid accounts on the Mangatoon platform and they stated that they would probably leak the data at some point. The hackers claimed to have stolen the database from an Elasticsearch server that was using weak passwords, while also said that the company may have changed account passwords after learning of the data breach, but indicates they have not informed its customers. Furthermore, as part of their criminal activities, pompompurin has also sent fake cyberattack emails to the FBI's Law Enforcement Enterprise Portal (LEEP) and stolen customer data from Robinhood. After RaidForums was seized by law enforcement, pompompurin set up a similar forum called Breached.
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