Public Suffix List

The Public Suffix List (PSL) is a resource that identifies all the domains on the internet that are controlled by organizations and individuals, such as .com, .org, or country-specific domains like .uk. It helps web browsers and software understand which parts of a domain can be managed or owned separately. This is important for security, as it prevents certain cookies and data from being shared across different domains, thereby protecting user privacy. The PSL ensures that web applications handle cookies and user data correctly, promoting safer browsing experiences.