What is defined as a breach of security?

A breach of security is specifically characterized by unauthorized access, use, or disclosure of sensitive information. This definition highlights the critical aspect of security within information management, emphasizing that when individuals who do not have the proper authorization gain access to sensitive data, it constitutes a breach. Such security incidents can lead to serious consequences, including privacy violations, financial loss, and damage to organizational reputation.

The other options do not align with the defined scope of a security breach. While a common employee mistake may lead to situations where unauthorized access occurs, it does not automatically qualify as a breach unless sensitive information is actually compromised. Similarly, failure to complete training and a lapse in productivity relate to employee performance and compliance but do not pertain to the specifics of security breaches concerning sensitive information access or disclosure.