What is a Cookie?
A Cookie is a small data packet that is exchanged between computer applications. The most common form is the HTTP-Cookie to recognize a user when he visits a website again. So-called trackingCookies are used to record browsing histories.
Authentication cookies are the most common way for web servers to determine whether a user is logged in and with which account. Without such a mechanism, the site would not know whether data containing sensitive information may be sent or whether the user must authenticate by logging in.
An HTTP-Cookie (also referred to as a browser-Cookie ) is a small file sent from a Web site and stored by the Web browser on the visitor’s computer. Cookie s were developed as a reliable way for websites to remember state-related information (e.g., items added to the shopping cart in an onlineShop ) or to record the visitor’s browsing activity (e.g., logging in, clicking buttons, recording pages visited).
The security of an authentication cookie generally depends on the security of the sending website, and whether the Cookies data is encrypted. If there is a security breach, the data can be read by a hacker and used for unauthorized access to a non-public website.
European law requires all websites targeting European Union member states to obtain users’ “informed consent” before storing non-essential Cookies on their device.
For more information on Cookies, see this YouTube video:
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