In the context of the Covid-19 pandemic, video conferencing systems such as ZOOM,
BigBlueButton, Microsoft Teams and Jitsi have gained massive importance. decisions
for or against certain systems are made on the basis of press releases,
however, there is no reliable technical information on the security of these systems
available. Our project aims to provide reliable information on the safety of
Win video conferencing systems and selected systems (e.g. BigBlueButton, Jitsi and
Nextcloud Talk) analyze.