Gaping Flaw in Microsoft’s ‘Do Not Track’ System

Microsoft stunned the online ad business earlier this year with its announcement that the Internet Explorer 10 browser, when launched, would be set to a default “Do Not Track” position, frustrating advertisers who want to target users based on their browsing history.

But the ad biz can breathe easy: IE10 contains a gaping flaw that will allow any advertiser to ignore its DNT signal, multiple sources tell us.