Case Study: Blackstone achieves an accelerated, secure Microsoft 365 migration with Vectra AI Inc.'s Vectra Protect

Blackstone accelerates a secure M365 migration in an era of open doors and configuration drift

Blackstone, the world’s largest alternative asset manager, faced a massive cross‑functional Microsoft 365 rollout and needed to ensure strong security posture and controls without slowing the migration. The security team suspected gaps but lacked visibility into deep configuration drift across Azure AD, Exchange, Teams and SharePoint.

Using Vectra Protect, a Microsoft‑certified posture assessment, the team uncovered hundreds of hidden settings and reviewed thousands of configuration combinations, enabling confirmation and hardening of conditional access and other controls. Vectra prioritized findings by risk and operational impact, provided analyst consultation, and used multi‑tenant scans to reveal regional gaps—delivering clear remediation priorities and faster, safer completion of the M365 migration.

Blackstone

Adam Fletcher

Chief Security Officer