Microsoft scored 100% on the 2024 MITRE detection evaluations, then withdrew from the 2025 edition. A license, a deployed sensor, and a strong test score describe capability, not whether your tenant will alert when it matters. Part 4 of The Security Bridge series covers Coverage and maturity scoring, the sensor health issues that quietly limit visibility, and how to validate detection instead of assuming it. For security architects, engineers, and CISOs who treat deployment a