dotarray writes "Valve has stepped up to answer allegations that the company's anti-cheat system was scanning users' internet history. Rather than a simple, sanitized press release or a refusal to comment on 'rumours and innuendo,' Valve CEO and gaming hero Gabe Newell has personally responded."
Newell or not, not everyone will like the answer. The short version is that Yes, Valve is
scanning DNS caches, with a two-tiered approach intended to find cheating users by looking for cheat servers in their histories. Says Newell: "Less than a tenth of one percent of clients triggered this second check
, accessing the DNS cache. 570 cheaters are being banned due to DNS searches."