Stalker Online

Stalker Online operates as an online game service headquartered in Russia. The organisation provides a multiplayer gaming platform accessible to users over the internet. Its primary product is the Stalker Online game, which delivers interactive gameplay and social features. The service is delivered through servers located in Russia, supporting player connections worldwide. Users create accounts that store personal information such as usernames, email addresses, and phone numbers.

In May 2020, a security breach exposed more than 1.2 million user records from the Stalker Online game, together with approximately 136,000 forum accounts. The compromised data included usernames, MD5‑hashed and salted passwords, email addresses, phone numbers, and IP addresses. Attackers offered the stolen information for sale on darknet markets, requesting payment in Bitcoin and providing a defaced website page as proof of the intrusion. The developers of Stalker Online did not issue a public statement addressing the incident after it became known. This lack of communication left affected players without official guidance on mitigating risks such as credential cracking or phishing. The episode remains a notable example of a security lapse affecting an online gaming service based in Russia.