What is the legal term for the use of reasonable force by a security guard?

The legal term for the use of reasonable force by a security guard is self-defense. This concept allows individuals to protect themselves from imminent harm or the threat of violence. In a security context, self-defense means that a guard can use reasonable force when necessary to prevent harm to themselves or others, while responding appropriately to a threat.

Self-defense is governed by legal standards that require the use of force to be proportional and necessary under the circumstances by which it is applied. Security guards, being in a position to observe and intervene in potentially dangerous situations, need to understand the boundaries of self-defense to ensure their actions remain within legal limits.

The other terms, while relevant in specific scenarios, do not encapsulate the broader principle of using reasonable force to protect oneself or others as directly as self-defense. Detainment refers more to holding someone until authorities arrive, while a citizen's arrest pertains to apprehending someone suspected of a crime. Private security enforcement could imply a range of actions taken by security personnel but does not specifically define the legal use of force.