Which of the following best describes the protection against phishing offered by Mimecast?

The protection against phishing offered by Mimecast is best described by identifying and alerting users to potential threats. This approach plays a critical role in email security as it empowers users to be proactive in recognizing and responding to phishing attempts. By notifying users about suspicious emails, Mimecast aids in developing a security-conscious culture among employees, which is essential for mitigating the risks associated with phishing attacks.

This identification process typically includes advanced algorithms that analyze incoming emails for common phishing indicators, such as malicious links, suspicious attachments, and unusual sender behavior. Additionally, the alerts help to slow down potential breaches by making users more vigilant, fostering a collaborative defense mechanism against such threats.

While other options present aspects of email management and security, they do not specifically address the proactive defense mechanism against phishing that Mimecast emphasizes through user alerts and education. Regular email backup and storage and zero storage limits relate more to data retention policies rather than active phishing protection. Similarly, automatically forwarding suspicious emails to security teams is a response mechanism rather than a proactive alerting strategy that engages users directly.