Browser & Web Performance · Middle · Question 75 of 75
Why does a third-party cookie set inside an embedded iframe often not work anymore?
- ✓Correct answer: Browsers block or partition third-party cookies; a cookie set in an embed is no longer shared across top-level sites
- 2Cookies only work on port 80
- 3Iframes can't set cookies by specification
Explanation
Safari and Firefox block cross-site tracking cookies by default. CHIPS (Partitioned) gives embeds a separate cookie jar per top-level site.