What happens during the review process of Mimecast security settings?

During the review process of Mimecast security settings, policies are evaluated to determine their effectiveness against the latest security threats, and adjustments are made as necessary. This proactive approach ensures that the security measures in place are not only current but also capable of addressing new and evolving risks. Regular assessments help maintain a robust security posture, allowing organizations to adapt their defenses and policies in response to the constantly changing landscape of cyber threats.

Focusing solely on user access levels or making changes only after a security breach are reactive strategies that can leave organizations vulnerable. Resetting all settings to factory defaults would eliminate any custom configurations that have been specifically tailored to the organization's needs, potentially creating more security gaps. Therefore, option B aligns with best practices in security management by emphasizing continuous evaluation and improvement of policies.