Why not use hashes for the IE7 anti-phishing filter?
Several people have asked why Internet Explorer 7 will send "real" URLs instead of hashes to the AP (Anti-Phishing) server. That's a good question, and I know it's a good question because it's the same thing just about everybody at Microsoft (including me) says the first time they hear about the feature :-). Nevertheless, a fairly quick investigation into the issue shows that it buys very little in terms of privacy but comes at significant cost.
At the Office Development, Security, Randomness... blog.
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