Financial Services Zero-Trust Migration
Fortune 500 Financial Institution
Industry
Financial Services
Category
Infrastructure Hardening
Duration
18 months
Team Size
8 security engineers
Overview
Complete zero-trust architecture implementation for a global financial services organization, securing 50,000+ endpoints across multiple countries and business units.
The Challenge
The organization operated with a legacy perimeter-based security model that assumed internal trust. Following a near-breach incident, leadership mandated a complete security architecture overhaul. The challenge was implementing zero-trust principles across a massive, complex environment without disrupting critical financial operations.
- Legacy applications incompatible with modern authentication
- 50,000+ endpoints across 40 countries requiring migration
- Zero tolerance for downtime in trading systems
- Regulatory compliance across multiple jurisdictions
- Internal resistance to security friction
Our Solution
We designed and implemented a comprehensive zero-trust architecture in phases, starting with identity and access management, followed by network segmentation, and finally continuous monitoring and validation.
Implementation Approach
Phase 1: Identity Foundation
4 monthsImplemented modern identity provider with MFA, conditional access policies, and privileged access management. Migrated 50,000+ users with zero downtime.
Phase 2: Network Segmentation
6 monthsDeployed software-defined perimeter and micro-segmentation across data centers and cloud environments. Eliminated flat network trust.
Phase 3: Application Access
5 monthsImplemented application-level authorization with continuous verification. Migrated 200+ critical applications to zero-trust model.
Phase 4: Monitoring & Validation
3 monthsDeployed continuous monitoring with automated policy enforcement and anomaly detection across the entire environment.
Results
87%
Reduction in lateral movement risk
0
Successful breaches post-deployment
99.99%
Uptime maintained during migration
100%
Regulatory audit pass rate
Technologies Used
Southern Solve transformed our security posture without disrupting operations. Their zero-trust implementation is now the blueprint for our global security strategy.
Chief Information Security Officer
Fortune 500 Financial Institution
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