A cookie is a small text file that is temporarily stored on your hard drive. Cookies are used by almost all websites, and in some cases, cookies are the only way to make a website work as intended.
A cookie contains a randomly generated ID that allows your computer to be recognized and collects information about which pages and features are visited with your browser. Cookies do not see who you are, what you are called or where you live. The cookie is passive and cannot spread computer viruses or other malicious programs.