Final answer:
The strategy is called Risk deterrence, which aims to prevent harmful actions by making potential adversaries aware of the severe consequences that could ensue if they engage in such actions.
Step-by-step explanation:
The strategy that involves understanding something about the enemy and letting them know the harm that can come their way if they cause harm to you is known as Risk deterrence. This strategy is based on the premise that by demonstrating the potential consequences of harmful actions, one can deter others from engaging in those actions.
This concept is often used in the context of security, both at the national level, such as during diplomatic negotiations or potential military conflicts, and in cybersecurity, where potential attackers are discouraged from attempting to breach systems due to robust defense mechanisms. This form of risk management implies a proactive approach to preventing adverse outcomes rather than merely accepting or transferring them.