# Report: 13TB of Steam data leaked after users access 'publicly accessible endpoint'

DevFeed: [Report: 13TB of Steam data leaked after users access 'publicly accessible endpoint'](<https://devfeed.tech/articles/report-13tb-of-steam-data-leaked-after-users-access-publicly-accessible-endpoint-15091.md>)

Original publisher: [Read original article](<https://www.gamedeveloper.com/pc/report-13tb-of-steam-data-leaked-after-users-access-publicly-accessible-endpoint->)

Author: Bryant Francis

Published: 2026-08-31T15:07:37Z

Content type: news

Language: en

Sources: [gamedeveloper](<https://devfeed.tech/sources/gamedeveloper.md>)

Topics: [data](<https://devfeed.tech/topics/data.md>), [Security](<https://devfeed.tech/topics/security.md>), [Server](<https://devfeed.tech/topics/server.md>)

Tags: [breach](<https://devfeed.tech/tags/breach.md>), [games](<https://devfeed.tech/tags/games.md>), [leak](<https://devfeed.tech/tags/leak.md>), [pre-release](<https://devfeed.tech/tags/pre-release.md>), [report](<https://devfeed.tech/tags/report.md>), [security](<https://devfeed.tech/tags/security.md>)

## AI overview

A reported 13TB leak exposed Steam-related data uploaded between 2003 and 2013, including early Valve game builds and screenshots as well as beta builds from other publishers. The data was reportedly accessible through a public endpoint, though the source and scope of the breach remain unclear.

## Source excerpt

The leaked data apparently includes beta builds and screenshots of pre-release Valve titles--and games from other publishers like EA and WB Games.