In security terminology, a vulnerability is defined as which of the following?

• A. The degree of risk
• B. The possibility of an act
• C. The likelihood of detection
• D. The strength of the barrier

Answer: (B)

Vulnerability is a weakness that makes it possible for an attack or unauthorized action to occur. It describes the chance that a threat could exploit a flaw and carry out an act, such as accessing records or entering a restricted area. It’s not the overall level of risk (which combines vulnerability, threats, and impact), not the likelihood of detection, and not the strength of a barrier (which is a protective control). For example, unlocked doors create a vulnerability because they allow the possibility of unauthorized entry if someone with ill intent is present. So, describing vulnerability as the possibility of an act best fits security terminology.