The examination board IT-Security consists of professors, research assistants and students. It decides on the interpretation of the examination regulations and deals with cases that may not be provided for or covered by the regulations.
Contact the examination board if something unforeseen happens in your studies, such as a prolonged illness or problems with exams. The committee can grant special permission (only in truly exceptional situations, of course) and make special arrangements for you.
Typically, you should go directly to the chairperson of the committee. This person can decide many things directly, it does not always have to be a lengthy meeting of the committee. You can also contact your study coordinator.