What is an example of a breach of the principle of "need-to-know"?

The principle of "need-to-know" is a critical component of information security, particularly regarding classified information. It mandates that access to classified data must be limited to individuals who require that information to perform their official duties.

In this scenario, sharing classified information with colleagues outside the department directly contravenes the "need-to-know" principle. Employees who share sensitive information with those not authorized to access it violate security protocols, as those individuals do not have a legitimate necessity to know that information for their work responsibilities. This action poses significant risks to security, as it can lead to unauthorized disclosure and compromise the integrity of sensitive information.

In contrast, having only authorized personnel access classified information exemplifies compliance with the "need-to-know" principle, while reviewing security policies during trainings and conducting background checks are measures designed to enhance security and ensure that appropriate access protocols are followed.