Zero-Trust Security Transformation for Regional Bank

A regional bank with 40+ branch locations was operating on aging VPN infrastructure with flat network architecture, creating significant lateral movement risk. Following a near-breach incident, executive leadership mandated a full zero-trust transformation within 18 months — while maintaining 24/7 banking operations and meeting strict OCC regulatory requirements.

Critical Path Management embedded a dedicated PM team to coordinate across the CISO office, network engineering, application teams, and third-party security vendors. We implemented a phased rollout using NIST CSF as the governance backbone — starting with identity (IAM/MFA), then network segmentation, then endpoint controls. Agile sprints kept workstreams moving in parallel while daily standups with branch IT ensured zero operational disruption.

The zero-trust architecture was fully deployed across all 40+ locations in 14 months — ahead of the 18-month mandate. The bank achieved SOC 2 Type II certification, passed its OCC exam with no material findings, and reduced its attack surface by eliminating all legacy VPN dependencies. Branch staff experienced zero downtime during the transition.