Answer:
Answer is: A THREAT
Explanation:
In computer security, a threat is a possible danger that may exploit a vulnerable to breach a security and therefore cause possible harm.
A threat can either be intentional (I.e. Hacking: an individual cracker or organization) or accidental ( e.g. malfunctioning of a computer) or otherwise a circumstance, action or event.
A threat is a potential for violation of security, which exists when there is a cicumstance, capability, event or action that could breach security and cause harm. That is, a threat is a possible danger enabling exploitation of a vulnerability.
Therefore the answer that best suits the question is A THREAT.