Skill 1-1: Detect, investigate, respond, and remediate threats to the productivity environment using Microsoft Defender for Office 365Skill 1-2: Detect, investigate, respond, and remediate endpoint threats using Microsoft Defender for EndpointSkill 1-3: Detect, investigate, respond, and remediate identity threatsSkill 1-4: Manage cross-domain investigations in the Microsoft 365 Defender Security portalThought experimentThought experiment answersChapter Summary