This demo walks through investigating and responding to email false negatives—cases where a malicious message was delivered even though it shouldn’t have been. It shows how to use Explorer and the email entity page to find the delivered message, review detection and authentication details, inspect URLs and attachments (including detonation results when available), and determine why it got through—such as policy overrides, allow entries, or gaps in configuration. From there, it demonstrates the remediation loop: remove or neutralize the message across mailboxes, submit the email (or URL/attachment) to Microsoft as a false negative for analysis, and tune tenant controls like the allow/block list or policy settings so similar messages are blocked next time.
We produced this as a “close the gap” walkthrough—built around fast triage and smarter prevention. The pacing is designed to keep investigators oriented as they pivot from message evidence to root cause to action, with a clean edit that emphasizes the repeatable pattern: find it, explain it, fix it, and teach the system. Final delivery includes closed captions, audio description, and thumbnails.
The inevitable sequels
Hollywood keeps stretching good ideas into progressively worse sequels. We don’t. These are the related videos—spiritual siblings of the one you just watched—as good or better than this video. Expect callbacks, new plot twists, and maybe even a scene-stealing cameo from a lower third.
