Challenge 0. Here's what we know. An attacker has obtained access to the satellite's ground station through an internet-facing website. Once they obtained access, they kicked us out. The challenge? Teams must regain network access to the ground station. Here's how they do it. An internet-facing website exists on the same subnet as the ground station. Teams must identify and exploit a vulnerability in the web server, then use it as a foothold within the network to pivot to the ground station and gain access.