What does a security breach entail in terms of unauthorized access?

A security breach specifically involves the violation of security protocols, leading to unauthorized access to sensitive data. The correct choice, which involves access to personal information by unauthorized individuals, aligns perfectly with the concept of a breach. This unauthorized access can result in the compromise of sensitive data, which can have serious implications for individuals and organizations.

For instance, when unauthorized individuals gain access to personal information, it can lead to identity theft, financial loss, and damage to an organization's reputation and trustworthiness. This scenario clearly illustrates the essence of a security breach - the violation of privacy and security measures in a manner that puts sensitive information at risk.

In contrast, access by individuals with explicit authorization refers to legitimate actions taken by authorized personnel, which do not constitute a breach. Similarly, accessing confidential corporate information without consent also describes a breach, but the key focus in the context of the question is on personal information access specifically, making the second choice a more direct fit. Access for legitimate business purposes is also distinct because it implies that authorization is in place, meaning there is no breach occurring. Therefore, the emphasis on unauthorized individuals accessing personal information captures the core definition of a security breach.