This case study describes a global executive talent and leadership advisory firm (name redacted) operating across 48 offices in 23 countries with three redundant data centers and an internal search application that depends on large volumes of sensitive data (pages 1–2). After reevaluating security, the firm prioritized external expertise over adding headcount and observed the threat focus shifting toward endpoint compromise and lateral movement, so it adopted Microsoft Defender for Endpoint, but quickly found the alert volume too high to manage without an MDR partner (page 3). It selected Critical Start based on Microsoft recommendation, platform-agnostic delivery, and deep Defender expertise, plus an approach that investigates all alerts by suppressing routine activity via a trusted regis

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