So researchers at Mozilla have replicated the findings of a 2012 study that allows users to be identified through the collation of data from third-party trackers as the users browse popular websites.

Question: Was Mozilla replicating using a "vanilla" browser (e.g. no adblocking/tracker protection)? Or is this even after tracking mitigations are put into place? Mozilla's own Firefox now has built-in "tracker" protection in all versions of its browser, so it seems like they would be well-positioned to test whether the de-anonymization is thwarted with tracking protection toggled on or off.