The so called "Anonymous Leaker" that was responsible for the distribution of the Half-Life 2 beta yesterday (And also alledgedly the one who stole from Valve to begin with), has made a statement.... A quote:
To Valve: I suggest you stop lying to your customers about how much was stolen/compromised, or I'll have to release everything just to prove my point. And you know what you got, as I do."

Half-Lifenews.com