Which of the following best describes a threat in computer security?

A threat in computer security is accurately described as a possible danger that exploits a vulnerability. This definition emphasizes the relationship between threats and vulnerabilities within the context of information security. A threat represents the potential for harm or adverse effects if a vulnerability is exploited. Essentially, it focuses on the likelihood of an attack or breach that could compromise the system's integrity, confidentiality, or availability.

Understanding this definition reinforces the importance of identifying both threats and vulnerabilities when assessing security risks; organizations need to evaluate what threats exist that could exploit identified weaknesses in their systems. The other options do not accurately characterize what a threat is in this context. A secured system with no known weaknesses would imply that there are no threats present, which does not consider the ever-evolving nature of threats in the cybersecurity landscape. Remedies and methods of enhancing system integrity, while important components of security practices, do not define the concept of a threat itself.