Third-party cookies are small pieces of data stored on a user's device by websites other than the one currently being visited. For example, if you visit a website that has ads from another company, that company can place a cookie on your device. These cookies help track user behavior across different sites, allowing advertisers to deliver targeted ads based on browsing history. While third-party cookies can enhance online advertising, they also raise privacy concerns. Many users are unaware that their data is being collected and shared. As a result, some web browsers are starting to block third-party cookies to protect user privacy and give individuals more control over their online data.