A roughly 12–13TB archive containing internal Valve material and data from third-party games surfaced online over the weekend. Nicknamed the “Steam2 Teraleak,” it is being described as the largest leak in Steam’s history.
According to the report published through Steam News, the archive was not obtained through a hack. The report attributes its exposure to an old server endpoint that had been left publicly accessible.
Several important details remain unclear. The available report does not provide a breakdown of the archive’s contents, identify the exposed endpoint, or establish how long it was open to the public. It also does not independently substantiate the claim that this is Steam’s largest-ever leak.
For now, the scale and reported source of the dump are the key details: up to 13TB of Valve and third-party game data was reportedly sitting behind an endpoint left publicly accessible, rather than being taken through a conventional intrusion.
