[Nadya]

I think they were talking about a demonstration of "why they should care".

e.g.: perform a MITM attack on someone to show them why they should care

Doing so breaks the law in many places, I imagine Germany included.

[mr_O]

Exactly! PPL don't care for encryption before I hack their WA/FB communications or show them the content of their "personal documents" folder... This makes an approach to teach them such important stuff much more difficult because it's rather theoretical.

A real attacker wouldn't demonstrate that but just use the material he gains to make money in any way or destroy the lives/careers of the people.

The law is called "Hackerparagraph" (https://de.wikipedia.org/wiki/Vorbereiten_des_Ausspähens_und...)