In June, Firefoxmade its Total Cookie Protection (TCP) mechanism enabled by defaultfor everyone.

The feature had been in development for a long time and was introduced in a staggered manner.

His PrivacyTests.org website monitors the state of privacy protection across all mainstream browsers.

cookies website privacy policy data people looking together

bakhtiar_zein / Getty Images

Typically, cookies set by one website cant read the contents of cookies set by another website.

These are known as first-party cookies.

Clements explained that ad networks use this ability to set unique cookies for different websites.

Chocolate chip cookie on keyboard representing internet cookies

joruba / Getty Images

[TCP] certainly helps, but is by no means a complete solution for online privacy.

The TCP implementation makes an exception for certain genuine uses for third-party cookies to ensure websites work as expected.