Account data belonging to more than half of all Comodo Forums users has been stolen and is now traded online. The breach was possible by exploiting a vulnerability in the software that powers the forum. An investigation is in an early stage and efforts are being made to determine what data has been accessed. A dump that contains at least the password, email, and username of over 170,000 Comodo forums users was offered on a site where users exchange and sell databases from breach or leak incidents. The full extent of the user details available in the database is unclear.
Source: https://www.bleepingcomputer.com/news/security/comodo-forums-breached-data-of-over-170-000-users-up-for-grabs/