What constitutes a "security breach"?

A "security breach" is defined as an unauthorized entry or act that compromises the integrity, confidentiality, or availability of sensitive information or physical security. This can include various forms of intrusions, whether they are physical access to a facility or the unauthorized access of data systems. The essence of a security breach lies in the lack of permission or approval, which directly jeopardizes security protocols and could lead to significant risks, including data theft, exposure of sensitive information, or potential harm to individuals or property.

In contrast, the other options represent activities that are essential for maintaining safety and security within an organization or facility. Planned training exercises, regular maintenance procedures, and safety drills are all conducted with official consent and are intended to reinforce security measures, not undermine them. These activities are systematic and regulated to ensure preparedness, compliance, and overall operational efficacy.