A user on Reddit has posted a decompiled module that claims Valve's anti-cheat service, VAC, is quietly going through your browser history and sending results back to its servers. Something Valve boss Gabe Newell has made a public statement to deny.
Were you wrongfully accused of cheating and summarily banned from the PC version of Modern Warfare 2 recently? You weren't the only one. Valve's anti-cheat software goofed and they're offering free copies of Left 4 Dead 2 as an apology.