Internet Explorer SuperCookies bypass P3P and cookie controls
There is a significant privacy problem with Internet Explorer because of a design flaw in the Windows Media Player (WMP). Using simple Javascript code on a Web page, a Web site can grab the unique ID number of the Windows Media Player belonging to a Web site visitor. This ID number can then be used just like a cookie by Web sites to track a user’s travels around the Web.
However this ID number becomes a SuperCookie because it can be used by Web sites to bypass all of the new privacy and P3P protections that Microsoft has added to Internet Explorer 6 (IE6). IE6 ships today with all Windows XP systems. SuperCookies also work in all previous versions of Internet Explorer with all older versions of Windows…
But honestly, who’s surprised? At home, I’ve been using Mozilla almost exclusively for just about everything. Blogger I use in IE, but not for long.