ASIS-PSP Exam Dumps - Physical Security Professional (PSP) Exam

In loss prevention, the “common denominator” refers to a recurring factor or condition that presents an opportunity for theft, such as lack of supervision, poorly designed procedures, or inadequate physical security. Identifying and addressing these common denominators can significantly reduce incidents of pilferage or loss.

Low deterrence (A) is a result, not a proactive factor.

Confusion (B) may contribute but isn’t the primary concept here.

Reduced pilfering (D) is an outcome, not an ingredient.

Probability of detection refers to the likelihood that an intrusion or unauthorized action will be identified by the security system. It is a key performance metric used to evaluate the effectiveness of electronic security components such as sensors and alarms. A high probability of detection means a more reliable system.

A (System validation) is a phase where detection may be measured, but it’s not the definition.

B (Officer response) is unrelated to detection probability.

D (Response timing) is part of delay or intervention, not detection.

A trapdoor (also known as a backdoor) is a hidden method used by developers or attackers to bypass normal authentication or access controls in software. However, in technical distinction, a “trapdoor” refers more to unintentional or overlooked access, while “backdoor” is often intentional. For this question, since it emphasizes “unintentional access,” trapdoor is the best fit.

Bomb (A): Refers to logic bombs—malicious code triggered by specific conditions.

Backdoor (C): Usually intentionally left in place by developers or attackers.

Trojan Horse (D): Malware disguised as legitimate software.

If stairwells are used regularly for inter-floor travel and permitted by local code, the best practice is to maintain both life safety and security. This can be done by installing approved access control devices (e.g., card readers) and two-way communication systems (intercoms) to manage access while allowing emergency use.

A (Fail-secure locks) could pose a safety risk in emergencies.

B (Unlocked doors) may violate building security policies.

C (Selective unlocking) is inconsistent and may cause confusion during emergencies.

An auxiliary alarm system uses a direct connection (usually via leased lines) to a public emergency service center, such as police, fire, or 911. This provides rapid response but limits control to only the responding agencies, unlike proprietary or central station systems.

Piecemeal security refers to the ad hoc or fragmented implementation of security measures without an overarching strategic plan. Security elements are added reactively, often after an incident or perceived risk, rather than being guided by a coordinated risk assessment. This results in inconsistent, sometimes redundant or ineffective protection efforts, leaving gaps in security coverage.

References from PSP: ASIS POA – Strategic Security Planning; PSP Study Manual – Program Design Principles

Legal action, civil lawsuits, and civil litigation all fall under categories of public records that provide documented histories of an individual ' s involvement in legal or financial disputes. These records can offer valuable insight into behavior patterns, financial stability, and legal integrity — all of which are critical in personnel vetting.

Such records are accessed (where lawful) during comprehensive background checks.

Detention, particularly in the context of retail loss prevention, refers to the practice of holding a suspected shoplifter temporarily while investigating or waiting for law enforcement. This concept has evolved to provide legal protection for merchants when they act in good faith and with reasonable cause.

Release (A) and Confinement (B) do not fit the protective context.

None of the above (D) is incorrect because " Detention " is a valid and specific term used.