What exactly are cookies

What are cookies?

Cookies are primarily stored on the client side, but the server operator has the option of receiving his own copy of this so-called first-party cookie when the cookies are sent back by the browser. First and foremost, cookies ensure a more user-friendly internetthat records the user and his surfing habits and adjusts the websites visited and web functions accordingly without being asked.

But the data stored in cookies are also very interesting for website operators, they can use it but derive statistics and Conclusions about the surfing behavior of the visitors pull. In addition, server-side cookies enable the creation of User profiles. It is these user profiles that enable more targeted online marketing and, above all, targeting, which is the essential basis for personalized advertising.

In this context, so-called third-party cookies are particularly effective: They are usually set unnoticed by third parties and spy on the surfing behavior of users, usually over a long period of time and on different servers. For example, visit websites on the subject often health, you are expected to receive more advertisements soon Medicinal products played out - even on websites that have nothing to do with the topic. Another user is likely to see different advertisements on the same website because their user profile shows interest in a different topic. Privacy advocates therefore see cookies as the main cause of the "transparent user" whose traces on the Internet are for Marketing purposes how behavioral targeting would be abused.

Some users had probably not even noticed the existence of cookies until the new one EU Directive 2009/136 / EC The website operator forced the To inform users about the storage of user-relevant data. Since then, when you visit German websites for the first time, you have to accept the use of cookies. With one click or by continuing to use the website, you then consent to your data being stored - both locally on your computer and on the server.