AGCG Genuine
Consulting Group

Cybersecurity • IT Governance

Case Study

Restoring Cybersecurity and Compliance Control for a Banking Subsidiary

Following a group-level alert regarding the cybersecurity maturity and governance of a European subsidiary, AGCG was mandated to re-establish full control over compliance and security. In just a few weeks, an evaluation and transformation engagement enabled AGCG to reassure the group and restore the Executive Committee’s confidence: a complete assessment, a prioritized remediation plan, a NIST CSF roadmap and a multi-year budget formally approved.

  • Assessment & scoping under NIST CSF
  • Group-validated remediation roadmap
  • Cyber budget structured and approved by the Executive Committee
Duration
3 months
Impact
Governance and confidence restored
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Detailed Case Study — Restoring Cybersecurity and Compliance for a Subsidiary

Context

The client — a subsidiary of a major European banking group — was facing a firm request from headquarters: restore cybersecurity governance and regulatory compliance after several audit findings. Risk management and compliance processes were fragmented, maturity was low, and the Executive Committee had almost no visibility on the security posture.

AGCG Approach

  • • NIST CSF diagnostic: full maturity assessment across the 5 functions (Identify, Protect, Detect, Respond, Recover).
  • • Prioritized action plan: 18-month roadmap aligned with group expectations and local capabilities.
  • • Governance structuring: clarified roles and a recurring cyber steering committee.
  • • Reporting to headquarters: automated, audit-ready NIST CSF indicators.

Results

  • • NIST CSF roadmap validated by headquarters,
  • • Multi-year cybersecurity budget approved by the Executive Committee,
  • • Cyber governance and reporting restored,
  • • Confidence from headquarters and auditors fully recovered.
Identify Protect Detect Respond Recover Before intervention After intervention

Illustrative view — estimated progression based on the NIST Cybersecurity Framework

Why This Case Is Representative of Many Organizations

This case is far from isolated. Many subsidiaries — especially those outside the headquarters’ immediate perimeter — face identical constraints:

  • fragmented governance,
  • insufficient reporting to the parent group,
  • lack of maturity structuring around frameworks (NIST, ISO),
  • complex relationships with headquarters and auditors,
  • low visibility of risks and priorities for local leadership.

AGCG’s structured and pragmatic approach enables organizations to regain control in a matter of weeks, not years — combining strategic alignment, operational grounding and compliance-by-design.

AGCG Key Differentiators

  • Field-proven methodologies for multi-entity & multi-regulation contexts,
  • NIST CSF accelerators enabling rapid diagnosis and structured roadmaps,
  • Board-ready communication to quickly regain Executive Committee confidence,
  • Operational grounding ensuring recommendations are feasible and sustainable.

Conclusion

Restoring cybersecurity maturity and compliance is not just a matter of documentation. It requires clarity, prioritization and alignment between headquarters, local teams and governance bodies.

Thanks to its structured approach and accelerators, AGCG Genuine Consulting Group enabled this banking subsidiary to regain control, restore governance and secure group approval — all within three months.