The alerts timeline provides a sneak peek into the chronological order in which the alerts occurred, as well as the reasons that these alerts linked to this incident. If there is specific information regarding this asset, such as risk level, investigation priority as well as any tagging on the assets this will also surface in this section. The scope section gives you a list of top impacted assets that are part of this incident. As with other Microsoft security products, Microsoft 365 Defender is aligned to the MITRE ATT&CK™ framework. The attack categories give you a visual and numeric view of how advanced the attack has progressed against the kill chain. The overview page gives you a snapshot glance into the top things to notice about the incident. Review the alerts, devices, users, other entities involved in the incident. This opens the incident page where you will find more information about incident details, comments, and actions, tabs (overview, alerts, devices, users, investigations, evidence). Any machines tags that have been assigned to the device(s) will also be displayed. A side panel opens and gives a preview of valuable information such as status, severity, categories, and the impacted entities. Select an incident from the incident queue. Investigate the alerts that affect your network, understand what they mean, and collate evidence associated with the incidents so that you can devise an effective remediation plan. Microsoft 365 Defender aggregates all related alerts, assets, investigations, and evidence from across your devices, users, and mailboxes to give you a comprehensive look into the entire breadth of an attack. Security defenders can also rename incidents, assign them to individual analysts, classify, and add tags to incidents for a better and more customized incident management experience. From here, security defenders can see which incidents should be prioritized based on risk level and other factors. Incidents from the last 30 days are shown in the incident queue. Security defenders can also perform additional remediation steps to resolve the attack straight from the incidents view. In the Action center, pending actions are approved (or rejected), and completed actions can be undone if needed. All remediation actions, whether pending or completed, are tracked in the Action center. AIR capabilities significantly reduce alert volume, allowing security operations to focus on more sophisticated threats and other high-value initiatives. AIR capabilities are designed to examine alerts and take immediate action to resolve breaches. Having Automated Invest igation or AIR (Automated Investigation and Response) set to full, Microsoft 365 Defender can automatically investigate and resolve the individual alerts through automation, various inspection algorithm s, and artificial intelligence. They can also see the scope of the attack, like how many devices, users, and mailboxes were impacted, how severe the impact was, and other details about affected entities. Grouping related alerts into an incident gives security defenders a comprehensive view of an attack.įor instance, security defenders can see where the attack started, what tactics were used, and how far the attack has gone into the network. Malicious and suspicious events that are found in different device, user, and mailbox entities in the network are automatically aggregated by Microsoft 365 Defender. Investigate Incidents in Microsoft 365 DefenderĪn incident is a collection of correlated alerts that make up the story of an attack. With that said, lets jump into M icrosoft 365 Defender and look at a real incident and see how M icrosoft 365 Defender can work for your organization. In this blog I will go over the new unified Microsoft 365 Defender Security Portal and go into detail of investigating an incident, the correlation of alerts, and a detailed look at what Automated Investigation does and how it can help your organization. This is the second part of the series of Microsoft 365 Defender as you can view the first part here. This is John Barbare and I am a Sr. Customer Engineer at Microsoft focusing on all things in the Cybersecurity space.
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