What action should be taken to immediately remove a phishing email reported by a customer?

The most effective action to take in order to immediately remove a phishing email reported by a customer is to search for and remove the message from all mailboxes via the Admin Console Investigation Tool. This approach is particularly crucial in mitigating risks associated with phishing, as it ensures that the malicious email is not just blocked at the sender level, but fully eradicated from all affected accounts. Phishing emails can be particularly dangerous, as users might unknowingly interact with them, compromising sensitive information or organizational security.

By utilizing the Admin Console Investigation Tool, an administrator can perform a thorough search for the email across all user mailboxes and delete it, ensuring that no user has access to the phishing attempt. This helps to protect all users and reduces the potential for any harmful interactions with the email.

Other options may provide some level of response to the threat, but they don't effectively eliminate the immediate risk associated with the phishing email. For instance, blocking the sender only prevents future emails from that address but does not address the existing compromised email. Sending alerts to users can contribute to awareness but does not actively remove the threat. Temporarily enabling spam filtering could help in filtering future emails, but it does not tackle the immediate need of dealing with the currently existing phishing email. Therefore, the