I think trackers in genreal are bad. Third party trackers are even worse. We thought we are on a good way to protect us. Until now: CNAME Cloaking
Criteo is requesting the website to add a CNAME […] and it is used to disguise a third-party tracker as first-party tracker.
It seems they are sending emails to website owners and argue that they will possible loose money. What happens on the CNAME is only limited by the creativity of the one controlling the IP behind it.
Creativity can also be used for bad intentions.