HI Security Guard study materials
HI Security Guard study resources

HI Security Guard key terms

HI Security Guard · Get comfortable with the vocabulary.

Duty of Care

The legal obligation of a security guard to act reasonably to protect people and property within the scope of assigned responsibility, avoiding foreseeable harm through prudent action and attention.

Related: Negligence, Reasonable Force, Scope of Authority
Negligence

Failure to exercise the degree of care a reasonable guard would use in similar circumstances, resulting in harm. It requires a duty, a breach, causation, and actual damages.

Related: Duty of Care, Civil Liability, Incident Report
Scope of Authority

The limits of what a guard may lawfully do, set by state law, employer policy, licensing, and the client contract. Actions beyond these limits can be unlawful even if well intentioned.

Related: Duty of Care, Citizen's Arrest, Trespass
Civil Liability

Legal responsibility for money damages arising from harm to another person, such as from negligence, false imprisonment, or assault. It is separate from criminal charges and can follow even lawful conduct done poorly.

Related: Negligence, False Imprisonment, Excessive Force
Reasonable Force

The amount of physical intervention a guard may use that a prudent person would consider necessary and proportionate to stop a threat, no more than needed to prevent harm or detain for police.

Related: Excessive Force, Deadly Force, Use-of-Force Continuum
Excessive Force

Physical intervention that goes beyond what is reasonably necessary under the circumstances. It can expose the guard and employer to criminal charges, civil suits, and license discipline.

Related: Reasonable Force, Use-of-Force Continuum, Civil Liability
Deadly Force

Force intended to cause, or that a guard knows creates a substantial risk of causing, death or serious bodily injury. Its use is tightly restricted by law and employer policy.

Related: Reasonable Force, Use-of-Force Continuum, Weapon Retention
Use-of-Force Continuum

A graduated framework that matches response level to threat level, moving from presence and verbal commands through soft empty-hand control, hard empty-hand control, and intermediate weapons to deadly force only as a last resort.

Related: Reasonable Force, De-escalation, Excessive Force
De-escalation

Techniques that reduce tension and the likelihood of violence through calm communication, positioning, time, and active listening before any physical intervention is needed.

Related: Use-of-Force Continuum, Verbal Judo, Active Listening
Citizen's Arrest

A limited power of a private person to detain someone who commits a crime in their presence, or as state law allows. Guards must know their state's exact rules and call police promptly.

Related: Scope of Authority, False Imprisonment, Detention
False Imprisonment

Unlawfully restricting a person's freedom of movement by force, threat, or assertion of authority without legal justification. Even a brief unlawful detention can create civil liability.

Related: Detention, Civil Liability, Citizen's Arrest
Detention

Holding a person in a place or preventing them from leaving, lawfully or not. A guard must have legal grounds and use only reasonable, brief measures while police are summoned.

Related: False Imprisonment, Citizen's Arrest, Reasonable Force
Trespass

Entering or remaining on property without permission or legal right. Guards may lawfully ask trespassers to leave and may use reasonable measures to enforce lawful removal under employer policy.

Related: Scope of Authority, Premises Liability, Access Control
Premises Liability

The legal responsibility of property owners and occupiers to keep premises reasonably safe and warn of known hazards. Guards often carry out these duties on behalf of the property owner.

Related: Duty of Care, Trespass, Incident Report
Active Listening

Fully concentrating on a speaker, noting words and body language, and confirming understanding by paraphrasing. It calms people, gathers accurate information, and reduces the chance of escalation.

Related: De-escalation, Verbal Judo, Observation
Verbal Judo

A communication approach that redirects hostility through empathy, respectful language, and offering choices, aiming to gain voluntary compliance rather than forcing confrontation.

Related: De-escalation, Active Listening, Reasonable Force
Observation

Deliberate, systematic attention to people, objects, and conditions, including baseline behavior and anomalies. Skilled observation is the foundation of prevention, reporting, and accurate testimony.

Related: Situational Awareness, Incident Report, Active Listening
Situational Awareness

Continuous perception and understanding of what is happening around you, so threats and hazards are recognized early enough to avoid or respond to them effectively.

Related: Observation, De-escalation, Access Control
Access Control

Procedures and systems that limit entry to authorized people, such as checking credentials, badge readers, visitor logs, and locked doors. It is a core prevention function on most posts.

Related: Trespass, Situational Awareness, Post Orders
Post Orders

Written instructions for a specific post describing duties, patrols, reporting, emergency steps, and limits on authority. Guards are expected to know and follow them.

Related: Scope of Authority, Access Control, Incident Report
Patrol

Scheduled movement through an assigned area to detect hazards, deter crime, and verify conditions. Effective patrol varies routes and timing and documents what was checked.

Related: Observation, Post Orders, Fire Watch
Incident Report

A written record of an event, capturing who, what, when, where, how, and what actions were taken. Reports should be factual, objective, timely, and free of opinion or speculation.

Related: Observation, Chain of Custody, Negligence
Chain of Custody

A documented, unbroken record of who handled evidence, when, and where from collection to final disposition. Gaps can make evidence inadmissible or undermine testimony.

Related: Incident Report, Evidence Preservation, Testimony
Evidence Preservation

Protecting physical and digital evidence from contamination, loss, or alteration, including securing the scene and limiting access until law enforcement or investigators arrive.

Related: Chain of Custody, Crime Scene, Incident Report
Crime Scene

The location where an offense occurred or evidence may be found. Guards secure it, avoid disturbing items, and record initial conditions rather than investigating themselves.

Related: Evidence Preservation, Chain of Custody, Incident Report
Testimony

Spoken or written statements given under oath in court or at a hearing. Guards should rely on accurate notes and reports rather than memory and answer only what is asked.

Related: Incident Report, Chain of Custody, Observation
Emergency Action Plan

A written plan describing how occupants respond to fire, severe weather, medical emergencies, and other crises, including evacuation routes, assembly points, and assigned roles.

Related: Evacuation, Fire Watch, Incident Command
Evacuation

Organized movement of people out of a dangerous area to a safe assembly point, using designated routes and accounting for occupants, including those needing assistance.

Related: Emergency Action Plan, Assembly Point, Fire Watch
Assembly Point

A pre-designated safe location where evacuees gather so they can be counted and kept clear of hazards and emergency vehicles.

Related: Evacuation, Emergency Action Plan, Fire Watch
Fire Watch

A patrol assigned when fire protection systems are impaired or during high-risk activities, to detect fire early, alert occupants, and begin notification of the fire department.

Related: Patrol, Emergency Action Plan, Evacuation
Incident Command System

A standardized management structure that organizes responders by function, such as command, operations, and logistics, so multiple agencies can work together under one plan.

Related: Emergency Action Plan, Evacuation, Testimony
CPR

Cardiopulmonary resuscitation: chest compressions, with rescue breaths if trained, to circulate blood when a person is unresponsive and not breathing normally, until advanced help arrives.

Related: AED, First Aid, Good Samaritan Law
AED

Automated external defibrillator: a portable device that analyzes heart rhythm and delivers a shock to restore normal rhythm in sudden cardiac arrest. Training and quick access save lives.

Related: CPR, First Aid, Emergency Action Plan
First Aid

Immediate basic care for injury or sudden illness before professional help, such as bleeding control, bandaging, and positioning, limited to the guard's level of training.

Related: CPR, AED, Good Samaritan Law
Good Samaritan Law

A state law that limits liability for people who give emergency aid voluntarily and in good faith within their training, encouraging bystanders to help without fear of lawsuits.

Related: First Aid, CPR, Duty of Care
Bloodborne Pathogens

Viruses and bacteria spread through blood and body fluids, such as hepatitis B, hepatitis C, and HIV. Guards use gloves and other protective measures when exposure is possible.

Related: Personal Protective Equipment, First Aid, Universal Precautions
Universal Precautions

Treating all blood and body fluids as potentially infectious and using barriers such as gloves, eye protection, and hand hygiene for every exposure situation, regardless of assumed risk.

Related: Bloodborne Pathogens, Personal Protective Equipment, First Aid
Personal Protective Equipment

Gear worn to reduce injury or exposure risk, including gloves, eye protection, masks, high-visibility vests, and protective footwear, selected for the hazards of the post.

Related: Bloodborne Pathogens, Universal Precautions, Fire Watch
Weapon Retention

Techniques and habits that keep an armed guard's weapon under their control, including proper holstering, awareness of surroundings, and defending against a grab attempt.

Related: Deadly Force, Reasonable Force, Situational Awareness