Many websites use third-party services to provide additional functionality, such as chat widgets, embedded videos, or social media feeds. These services often need to access their own cookies to function correctly, maintain user logins, or provide personalized experiences.
However, when the same third-party service is embedded on multiple websites, it can potentially access its cookies across all those sites. This can lead to passive tracking, where the service can track a user's activity across different websites without their knowledge or permission.
CHIPS prevents this type of tracking by creating a separate "cookie jar" for each website where a service is embedded. This means that the service can still access its cookies on the specific site where it sets them, but it cannot access those cookies on other sites where it appears.
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EXAMPLE: Imagine a library with different reading rooms. Each reading room has its own cookie jar where you can store your belongings (cookies). CHIPS ensures that you can only access the cookie jar in the specific reading room where you placed your belongings. You cannot access the cookie jars in other reading rooms, even if they have the same books (third-party services). |