mozilla-anti-tracking.com

same-site, same-origin iframe

test.mozilla-anti-tracking.com

same-site, cross-origin iframe

Access denied? Try interacting with the third-party first. Note that this link does not have an opener relationship, so it shouldn't lead to storage activation by heuristic.

anti-tracker-test.com

different site, cross-origin iframe

Access denied? Try interacting with the third-party first. Note that this link does not have an opener relationship, so it shouldn't lead to storage activation by heuristic.


Click to activate the window.open heuristic and relax storage isolation for anti-tracker-test.com.

known-tracker.anti-tracker-test.com

different site, cross-origin iframe, on blocklist

Set urlclassifier.trackingAnnotationTable.testEntries = known-tracker.anti-tracker-test.com

Click to activate the window.open heuristic and relax storage isolation for known-tracker.anti-tracker-test.com.


navigate to mozilla-anti-tracking.com version
navigate to anti-tracking-test-pages.netlify.app version