What is a security breach?

A security breach specifically refers to an incident in which unauthorized individuals gain access to sensitive data or systems. This can involve various forms of data compromise, such as theft, exposure, or manipulation of sensitive information. Understanding this concept is essential in network security, as it highlights the importance of safeguarding access controls, authentication processes, and overall system integrity.

In this context, options like accidental deletion of data do not constitute a breach since they do not involve unauthorized access. Similarly, a failure to comply with security protocols may indicate weaknesses in security practices but does not directly imply that unauthorized access has occurred. Unauthorized software installation, while it can cause security concerns, does not inherently represent a breach unless it results in unauthorized access to protected data or systems. Thus, the correct focus on the definition of a security breach emphasizes the aspect of unauthorized access.