A third party cookie is set by a domain other than the website a visitor is currently on (typically by an ad network or embedded tool) and is often used to track users across multiple sites. Major browsers have been phasing out third party cookie support due to privacy concerns.

Examples

• An ad network sets a third party cookie to track a user’s browsing across multiple sites for retargeting.

• A browser blocks a third party cookie from an embedded widget by default.

• A company shifts to first party or cookieless tracking as third party cookie support declines.

FAQs

Why are third party cookies being phased out?

Growing privacy concerns and regulation have led major browsers to restrict or block them by default.

What replaces third party cookies for tracking?

Approaches include first-party data, cookieless analytics, and identity resolution methods like wallet-based identification.

Do third party cookies affect web3 analytics?

Less so. Many web3 analytics tools, including Formo, rely on wallet activity rather than cookies at all.