Hackers Leak Rediscovered Half-Life 2 Source Code?
In 2003, the Valve network was compromised by German hacker Axel “Ago” Gembe, who monitored the development of Half-Life 2 and eventually stole the entire source code before being caught by the FBI. Four years later, Dutch hacker “MaddoxX” alleged he had bypassed Valve’s security systems and accessed a significant amount of sensitive information, including customer credit card information. He, too, was later arrested and prosecuted.
As of August 31 2012, a Russian underground forum is allegedly discussing and linking to the source code for the Source engine (rev: 2007), with screenshots revealing client builds for the 2007 engine for Team Fortress 2, Team Fortress Classic, Counter-strike Source, Day of Defeat: Source, Half-Life: Source, Portal, Portal – Multiplayer test, and Half-Life 2: Deathmatch.
Speculation suggests this build is a relic of the work of Ago and/or MaddoxX.
Valve has been made aware of the situation.