Microsoft has revealed a new feature that will ship with Internet Explorer 9 to help users avoid the online tracking that is now widespread on the Web and is used to power behavioral advertising. The new Tracking Protection Lists will tell the browser which third-party content to permit and which to prohibit.
Current InPrivate Filtering Not The Same
Internet Explorer already contains a feature, InPrivate Filtering, that attempts to block third-party scripting and tracking devices. However, InPrivate Filtering operates on a heuristic basis. It can both fail to block certain tracking devices, and it can also block too much third-party scripting, leaving sites inoperative. Tracking Protection Lists, in contrast, will be curated, and so should be less susceptible to these issues.
Tracking Protection Lists will be an opt-in feature, and Microsoft says
that it will not provide any lists itself. Instead, third parties can
provide lists to end-users. As such, the lists may come from privacy
advocacy groups, ad-blocking advocates, or individuals who want to block
certain content. The lists will update themselves automatically on a
Launching Early Next Year
The announcement comes not long after the FTC called for browser vendors to include a "do not track" button in order to block any kind of third-party usage tracking. Tracking Protection Lists would potentially be a finer-grained equivalent, allowing users to opt out of some or all tracking systems depending on their preferences.
Support for Tracking Protection Lists will first arrive in a release candidate of Internet Explorer 9. Redmond did not give a date for this, but it is likely to be early next year.