Targeted Content Review: Legal Authority, Use of Force & Criminal Law

Legal Authority: Security Officers vs. Peace Officers

One of the most heavily tested distinctions on both the State Security Guard License exam and the POST Academy Prep assessment is the difference between the lawful authority of a private security officer and a peace officer (sworn law enforcement).

A peace officer derives authority from the government and can act anywhere within their jurisdiction. A security officer is a private citizen employed to protect a specific person, property, or premises. Security officers have no more inherent legal authority than any other private citizen—their power comes from property rights, contract, and state licensing statutes, not from the government's police power. Confusing these two roles is a common error that can expose a security officer to serious civil and criminal liability.

Citizen's Arrest Standards

Because security officers are private citizens, their power to detain or arrest someone is generally governed by the citizen's arrest doctrine recognized in most states. Key rules that appear consistently across state standards:

• A citizen may arrest another person for a felony committed in their presence, or when they have reasonable cause to believe the person committed a felony.
• For misdemeanors, most states limit citizen's arrest to offenses committed in the arresting person's direct presence.
• The arrest must be made at or near the time of the offense—delay weakens lawful authority.
• Once the arrest is made, the detained person must be transferred to law enforcement without unnecessary delay. Holding someone longer than necessary can become false imprisonment, which is a tort and potentially a crime.

Always know your state's specific citizen's arrest statute language, as details vary.

Trespass and Detention Authority

Property owners—and their agents, including security officers—have the right to exclude or remove individuals from private property. A security officer acting as an agent of the property owner may:

• Warn a person they are trespassing and order them to leave.
• Detain a person for a reasonable time if the officer has reasonable grounds to believe a crime (such as shoplifting) has just occurred—this is sometimes called a merchant's privilege or shopkeeper's privilege in retail settings.
• Call law enforcement when trespass or criminal activity is confirmed.

Detention must be reasonable in manner, location, and duration. Any detention that goes beyond these limits can constitute false imprisonment.

Use-of-Force Continuum

Both the security licensing exam and the POST Academy Prep assessment test the use-of-force continuum—a framework that describes levels of force and the responses appropriate to each threat level. While specific models vary by agency and state, the general levels from least to most severe are:

1. Officer presence – Uniformed visibility alone deters many incidents.

2. Verbal commands – Clear, direct instructions to comply.

3. Soft empty-hand control – Guiding techniques, escort holds; minimal force.

4. Hard empty-hand control – Strikes, takedowns to overcome active resistance.

5. Intermediate weapons – OC spray, baton (where authorized and trained).

6. Lethal force – Firearm or any force likely to cause death or serious bodily injury.

Security officers must always begin at the lowest effective level and escalate only when a lower level is ineffective or would clearly be inadequate given the threat.

Proportionality and the Objectively Reasonable Standard

Proportionality means force used must match the threat faced. The legal benchmark courts apply—drawn from Fourth Amendment case law and applied broadly—is whether the force used was objectively reasonable given the facts and circumstances known to the officer at the moment force was used. This is judged from the perspective of a reasonable officer on the scene, not with the benefit of hindsight.

Key factors courts consider:

• Severity of the crime or threat
• Whether the subject posed an immediate threat
• Whether the subject was actively resisting or attempting to flee

Liability for Excessive Force

Using more force than the situation objectively requires creates civil liability (personal injury lawsuit, damages) and can result in criminal charges against the security officer. The employing organization may also face liability. Security officers are not protected by qualified immunity, which shields only government peace officers under federal law. This makes proportionality especially critical for private security personnel.

Safety Points

• Never draw or display a weapon unless the threat level legally and factually justifies it; premature weapon presentation escalates situations unnecessarily and may itself constitute a crime.
• When physical force becomes necessary, stop the moment compliance is achieved—continued force after compliance is excessive force.
• Document every use-of-force incident accurately and completely; your report is a legal record.
• If uncertain whether an arrest or detention is lawful, detain, call law enforcement, and let them decide—do not risk false imprisonment liability by acting beyond your authority.