Wargames

A 'wargame' is typically used to simulate a cyber-attack in near real-time conditions, to practice the incident response strategy and plan, by all parties involved.
Why it matters
May infer a level of criminal bias or discrimination or related to violence. Specifically, referring to war can be especially insensitive and triggering when added to the context of games.
Instead try saying:
Cyber security exercise
Simulation
Training