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Cybersecurity EngineerGyorgy Bolyki

A decade of practical security engineering behind the Microsoft 365 consultancy: vulnerability management, identity hardening, zero-trust policy design and incident response.

Background

My Head of IT background includes hardening a Microsoft 365 estate end-to-end: Intune device compliance lifted from 72% to 96%, Defender for Endpoint rolled out across the fleet, Conditional Access and MFA reshaped to remove legacy auth, and break-glass exceptions tightened to a documented standard.

Led first-time Cyber Essentials Plus certification from inside the business and aligned the wider control set with ISO 27001 expectations, including evidence preservation, change-control and access-review cadences.

Areas of capability

  • Vulnerability management and remediation prioritisation.
  • Endpoint security with Intune and Microsoft Defender for Endpoint.
  • Identity and access management with Entra ID, MFA and Conditional Access.
  • Zero-trust policy design and enforcement.
  • Firewall and IDS/IPS configuration on 1 Gb–10 Gb networks.
  • Encryption, key management and certificate-based authentication.

How this shapes the consultancy work

The consultancy work applies the same engineering discipline to client tenants: tighten the controls that carry risk, save the review evidence and leave internal IT or the incumbent supplier with an operating model they can repeat.

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