Large leak of Steam unreleased game builds and development materials
A large volume of game materials from Steam, including unreleased games, from its own and external developers was leaked. The leaked materials included unreleased builds and assets of Half-Life 2: Episode 3. The volume was put at 12 to 13 TB, and access through a publicly accessible endpoint was cited as the leak route.
Key facts
- Affected organisation
- Being confirmed
- Incident type
- Data breach
- Occurred / detected
- Not confirmed
- Scale of damage
- About 12 to 13 TB of game materials, including unreleased game builds and assets
- Cause / method
- Data access through a publicly accessible endpoint
- Location
- United States
If your data was exposed
- Don’t tap links in texts, calls or emails that mention this incident and offer compensation, refunds or breach checks. Check directly on the organisation’s official website or app.
Timeline
- The leak of 12 TB of Steam materials, including unreleased Half-Life 2: Episode 3 builds and assets, came to light.
- Access to the materials through a publicly accessible endpoint was cited as the leak route, and the volume was put at 12 to 13 TB.
3 related reports
- Massive 12TB Steam leak reveals decades of unreleased games — archived files include unseen Half-Life 2: Episode 3 builds and assets
- Report: 13TB of Steam data leaked after users access 'publicly accessible endpoint'
- 12TB of Steam Files Leak as a Decade’s Worth of First- and Third-Party Game Data Is Exposed
The summary and key facts are written by AI from related reports and may contain errors. Check the original articles and the organisation’s official statements for accurate details.