How Microsoft Defender protects high-value assets in real-world attack scenarios

Collection of Microsoft Security Blog posts (Mar 18–27, 2026) covering defensive guidance and incident analysis: Microsoft Defender asset-aware protections for high-value systems (domain controllers, web servers, identity infra); identity and access security guidance; analysis and detection/mitigation guidance for a global Trivy supply‑chain compromise that injected credential‑stealing malware into CI/CD pipelines; a case study where predictive shielding blocked GPO‑based ransomware; benchmarks and tooling for detection engineering (CTI‑REALM); and multiple posts on securing agentic AI (Zero -