What defines an information security breach?

An information security breach is defined as an incident where there is unauthorized access to, use of, or disclosure of classified information. This definition encompasses a broad range of incidents, including but not limited to hacking, insider threats, and accidental disclosures. The critical aspect of a breach is the unauthorized aspect, which implies that sensitive information is compromised, potentially leading to serious consequences for individuals or organizations involved.

The importance of recognizing what constitutes a breach is vital for facility security officers, as their primary responsibility is to safeguard classified information. Understanding the nuances of information breaches not only helps in establishing robust security protocols but also in responding effectively to any incidents that might arise.

The other options provided do not capture the comprehensive nature of what constitutes an information security breach. For example, focusing solely on financial information or non-sensitive information does not align with the broader implications of classified information security. Moreover, a failure to comply with security regulations may contribute to vulnerabilities but does not directly define an incident of unauthorized access or disclosure, which is central to the understanding of a breach.