You are a global administrator at an organization using the Microsoft Defender portal to manage security across your devices, identities, endpoints, email, and cloud apps. Recently, a series of suspicious activities have been detected, triggering multiple alerts. You need to investigate these activities to understand the scope of the attack and take necessary remediation actions. Which section of the Microsoft Defender portal should you use to view a summary of the attack, all related alerts, assets involved, and remediation actions taken?