NNM-club.ru

The popular Russian torrent tracker NNM-club suffered a significant data breach in September 2013. An unauthorized party managed to compromise the forum database resulting in the exposure of sensitive user information. The incident affected approximately 3.4 million registered members. The leaked data included email addresses, usernames, and IP addresses. Most critically, passwords stored as MD5 hashes were compromised, posing a high risk for users who reused credentials across other platforms. The breach highlighted vulnerabilities in older cryptographic hashing methods used by large community forums at the time.