Compact Privacy Policies are implemented as an additional P3P header in the HTTP protocol. The policies consist of a list of 3 character policy codes followed by an optional 4th character that can be an i (opt-in), o (opt-out), or a (always). View our Platform for Privacy Preferences page for more information about Privacy Policies.

Browsers may require a Compact Privacy Policy for third party media including images on a page that attempt to use cookies. If the policy is missing or unacceptable a red warning flag will typicall be displayed in the bottom status bar of the browser.

Compact Header: P3P: policyref="/w3c/p3p.xml", CP="DSP CONi GOV"

Platform for Privacy Preferences Specification

Privacy Warning Indicator in IE and Firefox:  

This utility provides a way to quickly test browser privacy warning compliance, or to determine what privacy policies are acceptable for third-party images. The image below is served by a third-party source that attempts to set a browser cookie. Change the policy and watch for the alert at the bottom of your browser.