1. What cookies are
A cookie is a tiny text file that a website leaves in your browser. On your next visit the site can read it back – to recognize the browser, recall a choice you made or measure how its pages are used. Related tools, local storage among them, do much the same job, and this policy applies to them too.
Cookies are part of how the modern web works: they keep pages secure, remember settings and make many everyday features possible. They are not programs, cannot install anything and cannot carry viruses, and each one can only be read by the site or service that set it.

