Who actually controls the Internet and digitally according to which criteria and filters or IP labeling?

If tens of millions and more of Internet-enabled networks, smartphones and laptops are used every day in Germany alone, who and how is checked, "filtered" for any keywords or / and "IP addresses" researched to identify "criminal" from "bourgeois" "Doing and keeping separate and to keep?

Programs search the data stream for keywords. The stuff is sorted out and then checked. Everything runs fully automatically

14 people with a specific key and access. When everyone is tired of it, most of the internet is down. "Watching" or making sure that everything works in a different way does, among other things. The "Internet Corporation for Assigned Names and Numbers".

When billions of people around the world are constantly talking and exchanging information, how is it actually checked whether they are doing illegal things?

In this respect, analogue from digital communication differs relatively little. There are countries where digital communication is controlled by the state. In many countries, including Germany, this does not take the form. Especially with encrypted communication, you quickly reach your limits. Therefore, encrypted communication may be prohibited in certain countries or providers of communication platforms may be forced to "cooperate".

In Germany, investigations into illegal activities always take place only after concrete suspicions. This applies to the digital world just as it does to the analog world.