We test your cyber defences, then fix what we find.

CyberFyter provides senior, independent cyber security checking for organisations that need more than a report. We find the weaknesses in your internal and external posture, rank them by risk and stay accountable until they are remediated.

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CyberFyter logo: a hooded fighter throwing a punch
29+ yearssenior technology leadership
£6.5bnof IT projects delivered
8of the world’s top IT service providers worked with
Teams of 10 to 250led through design to operational acceptance

Check thoroughly. Fix in priority order.

Most assessments end with a list of findings. Ours continue until the findings are closed.

Check

We assess your internal and external cyber posture against the standards that matter to you, including ISO 27001, NIST CSF and PCI DSS, and test where your defences are weakest.

Fix

We rank every weakness from critical to routine, then oversee remediation with your teams and suppliers and verify that each fix has worked.

Services

Six services, led by cyber security checking and remediation and delivered by senior practitioners who stay accountable until the outcome is achieved.

Cyber Rectification

We check your internal and external cyber posture for weaknesses, then oversee their remediation in priority order, from critical to routine.

Details

Legislative & Standards Compliance

Achieve and maintain compliance with the standards and legislation that apply to you, including ISO 27001, NIST CSF, PCI DSS and UK GDPR.

Details

Complex Project Delivery

Stalled, late or tangled programmes brought to real-world delivery, with ongoing management, oversight and governance.

Details

Fractional CTO / CISO

Part-time senior technology and security leadership for small and medium-sized enterprises: guidance, oversight and clear direction.

Details

Operational & Team Performance Reviews

Independent investigation and reporting on operational issues and team performance, carried out by external specialists.

Details

Corporate Problem Solving & Advisory

A C-suite-level troubleshooter and trusted independent advisor for dysfunctional teams, delayed projects, vendor and supplier management, and account oversight.

Details

Case studies

Selected engagements where security, compliance and delivery had to hold up under scrutiny.

Big 4 Bank

Lead Security Solution Architect

Proactive threat detection, vulnerability management and enterprise cybersecurity modernisation across banking infrastructure.

Enterprise cybersecurity and risk management for a leading global bank.

“A trusted security leader capable of securing critical banking infrastructure while maintaining full compliance and operational continuity.”

Enterprise Delivery Director
Importance
Critical financial infrastructure
Reach
Enterprise banking estate
Standards
NCSC, ISO 27001 and PCI-DSS
Role
Lead Security Architect

Lead Security Solution Architect for a Big 4 bank, responsible for cybersecurity oversight, threat protection and regulatory compliance across global banking assets.

Perimeter and threat protection

Microsoft Defender XDR deployment for host and perimeter protection.

SIEM and response

Integrated Microsoft Sentinel as primary SIEM with OAuth and SAML governance.

Regulatory alignment

Alignment with NCSC, ISO 27001 and Secure by Design standards.

Architectural lead

Overseeing junior architects and running weekly project reviews and standups.

Key deliverables

  • Assessing project vulnerabilities and managing risk.
  • Modernising security tooling across hybrid environments.
  • Engaging stakeholders on secure-by-design standards.
  • Conducting bi-weekly project reviews and alignment standups.

What this experience can deliver for you

  • Enterprise threat detection (XDR/SIEM)
  • Banking regulatory compliance
  • Microsoft security stack integration
  • Cyber risk mitigation and governance
Problem solverSecurity leaderPracticalOutcome-focused

Network Rail

Product Delivery Owner, Database and Security

Strategic target state planning, hardware procurement enablement and critical security compliance for database hosting environments.

Enhancing infrastructure performance and securing critical databases across the UK rail network.

“A meticulous approach to transforming database infrastructure, ensuring both commercial viability and stringent security standards under tight deadlines.”

Procurement and Tech Lead
Importance
Critical national infrastructure
Scope
Target state design document
Standards
ISO 27001, NCSC and PAS 555
Role
Product Owner, database and security

Product Delivery Owner for Database and Security, evaluating existing database provisions and producing high-level designs and Bills of Materials (BoM) for the target operational environment.

Hosting assessment

Evaluating existing Oracle Exalytic, Oracle RAC, DB2, MS SQL and other database hosting provisions.

Target environment

Producing comprehensive high-level designs for the target operational database hosting environment.

Procurement enabling

Developing target environment documents and Bills of Materials to enable rapid purchasing within the fiscal year.

Standards compliance

Ensuring all designs met strict security standards, including ISO 27001, ISO 27032, PAS 555 and NCSC guidelines.

Key deliverables

  • Assessing existing database hosting capabilities.
  • Drafting high-level designs and Bills of Materials (BoM).
  • Standardising system interaction diagrams using UML notation.
  • Meeting critical procurement deadlines under time and budget.

What this experience can deliver for you

  • Complex database architecture evaluation
  • Target environment and BoM generation
  • Compliance with NCSC, ISO 27001 and PAS 555
  • Rapid procurement and delivery enabling
Database expertTechnical leaderPreciseOutcome-focused

Raytheon Defence Systems

Senior Solution and Cybersecurity Architect

Secure MoD battle-ready test systems and UK/NATO defence IT architecture.

Secure MoD battle-ready test systems and UK/NATO defence IT architecture.

“An exceptional lead architect capable of delivering ultra-secure, highly compliant MoD defence systems in fast-paced operational environments.”

Defence Sector Lead
Importance
Defence and national security
Scope
UK, NATO and UN battlespaces
Standards
MoD SECRET standards and CIS
Role
Senior Solution and Security Architect

Senior Solution and Cybersecurity Architect for Raytheon Defence Systems, delivering an ultra-secure, MoD-approved test system for military deployments in UK, NATO and UN battlespaces.

Secure test system

Architected a complete MoD-approved test system for UK, NATO and UN battlespace deployments.

HP Blade architecture

Designed robust physical HP Blade server architecture supporting secret defence applications.

Security and access

Produced comprehensive System Architecture, Security, Access and Authentication designs.

Governance and testing

Led end-to-end technical, security, functional and non-functional testing execution.

Key deliverables

  • Designing MoD Secret standard infrastructure solutions.
  • Authoring system architecture and security documentation.
  • Directing functional and non-functional test execution.
  • Overall technical and system security delivery accountability.

What this experience can deliver for you

  • MoD and NATO secret defence architecture
  • Secure-by-design hardware and server solutions
  • End-to-end security and access governance
  • Defence contract delivery and compliance
Defence expertTechnical leaderStrategicOutcome-focused

Trusted by organisations across regulated sectors

Our work spans government, defence, banking, healthcare and critical national infrastructure, where failure is not an option and assurance is essential.

EDS
Capgemini
CSC
HP
Capita
IBM
CGI
ITNET
Serco
NHS

Experience gained delivering for, and alongside, these organisations.

Experience that stands up in a crisis

Our principal consultant has delivered for central government, the Ministry of Defence, major banks and the NHS, translating C-suite ambition into dependable delivery. Engagements are led with gravitas, integrity and technical depth.

GovernmentDefenceBanking & financeHealthcareJustice & policingUtilities & energyAerospaceInsurance

Selected credentials

  • CISA, SANS, ISO 27001, PCI, NIST and NCSC security training
  • TOGAF certified practitioner, with ArchiMate and UML
  • PRINCE2 Foundation and ITIL V4
  • AWS and Microsoft Azure certified, with multi-cloud architecture experience
  • Recognised in Despatches for a £3bn government programme

What clients say

“Testimonial placeholder: a short, specific statement of the outcome the client achieved.”

Have a problem nobody else has been able to untangle?

Speak to us in confidence. We will listen, assess the situation and tell you plainly how we can help.

Book a confidential security check