Ransomware Recovery & Security Hardening

Client Profile

Client faced a severe ransomware incident that compromised its servers and disrupted daily operations.


Background & Context

Client discovered that its servers were locked by ransomware, halting services and putting sensitive data at risk. With no existing incident response protocol, swift and structured action was critical.


Response Approach

Phase 1: Confirm & Contain

  • Zero Hour: Incident discovered during routine checks.
  • Within 2 Hours: Team mobilized; affected servers isolated; network access restricted.
  • By Hour 6: Decision made to rebuild the server environment securely. Group policies and security controls deemed essential to prevent reinfection.

Phase 2: Investigation & Implementation
  • Conducted forensic review to identify the attack vector.
  • Documented compromised areas and evaluated recovery requirements.

Phase 3: Restore & Stabilize

  • Rebuilt all affected servers from clean, verified sources.
  • Implemented security hardening measures, including:
  • URL blocking to prevent malicious site access
  • USB storage blocking
  • LAN hashing restrictions
  • Firewall rules review and new rule implementation
  • Wi-Fi access restricted to authorized devices only
  • Verified stability and ensured all core services were back online.
 
Phase 4: Post-Incident Improvements
  • Introduced proactive monitoring for all endpoints and servers.
  • Established automated backup verification and periodic recovery drills.
  • Scheduled quarterly security audits and policy reviews.

Outcome

All business-critical services were fully restored, and robust security enhancements were in place to minimize the risk of future attacks. The client now operates in a fortified IT environment with controlled network access and a structured, ongoing security review process.