Financial market infrastructure operator

Micro-Segmentation Governance

A micro-segmentation program needed governance that could span legacy networks and modern segmentation at once. I owned that workstream.

Micro-Segmentation Governance
Client
Financial market infrastructure operator
Role
Governance Lead
Timeline
2025 – present
Scope
Micro-Segmentation Governance

The challenge

Micro-segmentation only works if enforcement is consistent. In a large, regulated operator, that means connecting decades of legacy network infrastructure with a modern segmentation model, without slowing the business to a crawl or opening a security gap.

The approach

  • Owned the operational delivery of the governance workstream, including the governance concepts and their rollout.
  • Contributed to the design and realization of a governance solution for micro-segmented IT security environments.
  • Built a hybrid governance approach that links legacy network infrastructure with modern micro-segmentation.
  • Automated security enforcement requests across both environments, based on a risk-based scoring and routing model.
  • Ran change management and enablement for application owners, and steered vendors and development teams.

The outcome

Enforcement requests that used to be manual and inconsistent now route through a risk-based model across both environments. Application owners have a clear path, and security has an audit trail.

Client names are generalized. The work is real; the labels are not.
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