A cookie is indicated in the HTTP protocol as a small amount of data which the servers send to the browser. It then saves them on the user’s computer.
Every time you visit the site, the browser sends this data back to the server. Cookies are commonly used to distinguish among individual users, or store the contents of the “shopping cart” in e-shops, user preferences, etc.
Technically, they consist of a series of codes according to which the browser collects, and then sends information about our behaviour back to the relevant server.
Cookies contain information regarding how long the browser should store them (from one-time to several years).
Cookies are not directly linked to our name or email address, but often contain our system login information. They are common to one browser installation. Cookies are not secure, and neither is the collected data.