What is the role of a quarantine in an SEG system?

In a Secure Email Gateway (SEG) system, the role of a quarantine is to isolate suspicious emails for further investigation. This process is essential for maintaining security and managing potential threats without taking immediate drastic actions. By placing potentially harmful emails in quarantine, the SEG allows administrators or users to review these emails before deciding whether to release, delete, or take other actions.

Quarantine serves as a critical safety net, enabling organizations to analyze suspicious messages for malware, phishing attempts, or unwanted spam while preventing them from reaching the users’ inboxes. This method ensures that legitimate emails are not lost or deleted and provides a controlled environment to manage potential risks.

In contrast, other options would not adequately address the need to analyze suspicious emails in a controlled manner. For example, permanently deleting emails removes any chance of investigating them, and preventing all incoming emails would disrupt communication entirely. Notifying users of all email threats does not involve any isolation or analysis function, which is why the focus on quarantining is essential for ensuring security without sacrificing functionality.