Enterprise Cybersecurity Consulting | Active Directory Security | Incident Response
Former Microsoft Escalation Engineer | 15+ Years Specialised Security Consulting
Expert in threat eviction, breach recovery, and Active Directory security remediation for enterprise organisations.
When cyber threats breach your defences or legacy infrastructure creates vulnerabilities, you need an expert cybersecurity consultant with a proven track record in breach recovery and identity security remediation.
With deep Microsoft expertise and battlefield-tested incident response experience, I deliver the technical depth and crisis leadership that C-suite executives depend on during their most critical security challenges.
I've successfully conducted threat eviction and breach recovery for multiple compromised organisations, rebuilding resilient clean infrastructure from secure bastions. My approach to Active Directory security remediation eliminates years of misconfiguration, removing exploitable attack vectors while simultaneously strengthening identity management infrastructure.
With 15 years as a specialised IT security consultant and 16 years prior as a code-level escalation engineer at Microsoft Reading, I bring deep technical expertise in network security, identity protection, and enterprise security consulting. I architect and implement solutions that eliminate vulnerabilities, strengthen cyber resilience, and protect your critical business infrastructure.
Key Capabilities:
✓ Emergency threat actor eviction and containment
✓ Forensic analysis and attack vector identification
✓ Secure infrastructure rebuild and hardening
✓ Active Directory privilege model redesign
✓ Long-term security posture transformation
My background combines cybersecurity war-room management with deep programming expertise and technical architecture. As point man, I code extensively in PowerShell to perform discovery, analysis and remediation under pressure. I build and adapt toolsets at speed to address complex security challenges.
I've engineered PowerShell-based secure Active Directory deployment scripts, endpoint scanning engines for principal discovery, and developed multiple C# solutions including a proprietary multi-threaded Hyper-V backup system using change block tracking technology, achieving 50% storage reduction through optimised compression algorithms.
This fusion of crisis-response leadership and hands-on development capability enables me to architect enterprise solutions while driving incident resolution from the technical frontline.
Whether you're facing an active security breach, planning infrastructure modernisation, or need to strengthen your Active Directory security and identity management systems, I deliver rapid security assessment, decisive remediation, and measurable risk reduction.
Discuss Your Security ChallengesI've delivered cybersecurity consulting and incident response services across multiple sectors, including direct engagements with:
Incident Response Sectors:
Oil & Gas | Shipping | Heating Engineering | Automotive | Consumer Retail | Roadside Assistance
Plus hundreds of enterprise clients during 16 years at Microsoft
Specialised cybersecurity consulting engagements tailored to enterprise security challenges:
Rapid response to active breaches with containment, forensic analysis, and attacker removal.
Comprehensive breach investigation, remediation planning, and security restoration.
Redesign of identity architecture to eliminate privilege escalation vulnerabilities.
Enterprise security architecture planning for resilient, defensible infrastructure.
Security integration and separation planning for complex organisational changes.
Systematic elimination of misconfigurations and security debt in AD environments.
Deep technical specialisation in Microsoft identity and network security infrastructure:
Domain architecture, Kerberos, LDAP, Group Policy, privilege models, forest/domain trusts
DNS, DHCP, network segmentation, firewall design, zero trust principles
Certificate Services, PKI design, certificate lifecycle, secure communications
Azure AD/Entra ID integration, hybrid identity, authentication protocols, MFA
A cybersecurity consultant provides expert guidance on securing infrastructure, responding to security incidents, and systematically eliminating vulnerabilities. This includes architecture design, incident response, security assessments, and remediation of security debt in enterprise environments.
Full breach remediation typically requires 12 months or more, governed primarily by resources at the client's disposal. Initial threat containment and attacker eviction often occurs within days, **but** deeper and more extensive infrastructure remediation must be carefully phased to maintain operational uptime and trading capability. Organisations are usually unable to "stop trading to fix everything" — recovery is therefore an incremental process alongside ongoing business operation**s**.
Active Directory remediation involves systematically identifying and correcting misconfigurations, excessive privileges, weak authentication protocols, and structural vulnerabilities within AD environments. This process eliminates attack vectors that accumulate over years of organic growth and reduces the risk of privilege escalation attacks.
Yes, I provide remote and on-site cybersecurity consulting services internationally. Many incident response engagements can be conducted remotely, with on-site presence available for critical phases of breach recovery and infrastructure assessment.
My combination of 16 years as a Microsoft code-level escalation engineer and 15 years of specialised security consulting provides unique technical depth. I don't just identify problems—I architect solutions, write custom remediation tools, and personally execute complex technical work during high-pressure incident response situations.
Ready to strengthen your security posture or need immediate incident response support?
📧 Email: anthony@anthonyguyon.co.uk
📞 Phone: +44 771 252 6579
🌐 Location: Surrey, United Kingdom
For urgent security incidents, please call directly for immediate response.