Just like first party ads (hosted by the same domain) first party tracking is really hard to block. But its a lot safer and better in many ways. It forces the

Just like first party ads (hosted by the same domain) first party tracking is really hard to block. But its a lot safer and better in many ways. It forces the site you are visiting to keep the ads safe an only track you when you are on their property (an in turn follow laws were they are located, GDPR in the EU for example).