Massive Data Leak on Steam Involves Over 12 TB of Betas and Classic Games

Reports from numerous fan accounts and sites dedicated to Steam-related news indicate that a major security breach has occurred at Valve. The incident has resulted in over 12 terabytes of data being leaked online. According to available information, the massive data leak encompasses all content uploaded to Steam between the years 2003 and 2013, featuring both full titles as well as betas and demos of games that were never officially released.

According to information shared by Gabe Follower and reported by VGC, the leaked material includes early build versions of prominent titles such as Portal 2, Left 4 Dead, and Counter-Strike: Global Offensive. Additionally, the files feature preliminary content for Half-Life 2: Episode 3, amongst many other projects.

Reports suggest that the security breach was not the work of traditional hackers or specialist cybercriminals. Instead, the leak reportedly occurred via public, open links belonging to Valve that simply remained undiscovered until now. This serious security lapse has caused considerable concern among developers whose titles are hosted on the platform. Furthermore, it has sparked fears regarding whether other directories containing users' personal information might also lack proper encryption.