Eric Smalling, a Developer Advocate at Sneak, conducted a session on hacking a Kubernetes cluster. Drawing from his developer background, Smalling illustrated how vulnerabilities and misconfigurations can give attackers access to a cluster, allowing them to expand their reach. Using a hands-on approach, he demonstrated, step-by-step, how an attacker can exploit various vulnerabilities, emphasizing the importance of security measures at every layer of the system.