When should random security checks be employed versus targeted checks?

• A. Random checks ensure systematic coverage of all personnel.
• B. Random checks are never useful for security.
• C. Random checks increase unpredictability; targeted checks address known threats or vulnerabilities.
• D. Targeted checks should be used exclusively in all situations.

Answer: (C)

Unpredictability is a key element in effective security. Random checks create uncertainty about when and where inspections will occur, making it harder for someone to plan or conceal illicit items and increasing the chance of detecting something that would otherwise go unnoticed. Targeted checks, on the other hand, focus on areas or people with known threats or vulnerabilities, using intelligence and risk assessments to allocate effort where it’s most needed and to disrupt specific risks.

The best approach combines both ideas: random checks to maintain deterrence and catch the unexpected, plus targeted checks to address identified risks. Relying only on random checks can waste resources or miss high-risk situations, while focusing exclusively on targeted checks can leave gaps where unknown threats might slip through.