"not from current or previously visited websites" allows for HTTP redirects to count as "previously visited websites" (atleast in Firefox). Thus Redirect tracki

"not from current or previously visited websites" allows for HTTP redirects to count as "previously visited websites" (atleast in Firefox). Thus Redirect tracking still allows to set cookies for advertising networks that could be read out in iFrames or image / "tracking beacon" requests. As far as i understood: "3rd party" would exclude this.