The CyberStrike NEMESIS training workshop builds upon lessons learned in the CyberStrike LIGHTS OUT workshop by offering an in-depth look at the tactics, techniques, and procedures (TTPs) used by the most sophisticated cyber adversary groups targeting industrial control systems (ICS) today. Participants are guided through a series of hands-on exercises that challenge them to defend against some of these TTPs used by skilled adversaries. The NEMESIS workshop is designed to adapt and change as new incidents are uncovered or as new ICS-specific threats emerge, keeping the workshop content as current and helpful as possible.