olemus
kook mujalt, mitte parajasti külastatavalt saidilt
= cookie created by domain that is not the domain of the website that you are visiting

ülevaateid
https://www.opentracker.net/article/third-party-cookies-vs-first-party-cookies
https://en.wikipedia.org/wiki/HTTP_cookie#Third-party_cookie
https://cookie-script.com/all-you-need-to-know-about-third-party-cookies.html
https://business.adobe.com/content/dam/www/us/en/pdfs/Adobe_Thinking_Beyond_the_Third_Party_Cookie.pdf