This classroom training is aimed at IT specialists with administrative rights, i.e. primarily administrators, but also developers or architects who plan systems or set up and operate test environments. In this training course, the participants are shown the connection between their own behaviour and effective cyber security through numerous demos and hands-on lab exercises. The participants work with their own laptops on virtual server systems and slip into the role of the attacker. They actively scan the systems for exploitable vulnerabilities, use current attack tools and hack into the course systems.