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ABOUT LOCKEDSTACK

Who we are.

Independent expertise. Practical guidance. A team focused on your security and compliance.

SECURITY WITH PURPOSE

Confidence starts with clarity.

Locked Stack is an independent cybersecurity consultancy and managed services firm supporting organisations across North America, Europe and the UK. We help organisations understand their risks, strengthen their defences and navigate security and compliance requirements.

Clive Boonzaaier and Martyn Martynowicz bring their combined expertise and vision to our commitment to cybersecurity.

Explore our services

WHAT WE DO

Expertise that turns into action.

Our services span payment security, governance and risk, privacy, technical testing, security awareness and managed security.

Our dedicated technical security team identifies weaknesses through penetration testing and vulnerability scanning. Our advisory and assessment services help you translate findings into practical next steps.

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HOW WE WORK

Your goals. A clear way forward.

We begin by understanding your organisation, agreeing the scope and identifying the outcomes that matter. Our approach combines technical expertise with clear reporting and practical recommendations.

Want to collaborate?

Great projects start with a simple conversation, so get in touch and let’s turn innovative ideas into real results.

Talk to our team

Initial meeting

 

This can be completed remotely or in person and is an informal discussion where we explore your needs and how Locked Stack can support you.

Planning meeting

 

We agree your requirements and a timeline for delivery.

Assessment meetings

 

Formal assessment meetings usually take place over a week, either in person, remotely or through a combination of both.

You can plan the schedule to fit your requirements.

Review meetings

 

These meetings can cover a range of different needs.

We can review formal assessment results, or examine policies and procedures as part of our data governance services.

OUR PEOPLE

Clive Boonzaaier

Clive Boonzaaier

Co-founder & COO

Clive has over twenty years of experience in cybersecurity and regulatory compliance.

Experience and background

Clive is a PCI DSS Qualified Security Assessor (QSA) and PCI Professional (PCIP – Payment Card Industry Professional), with extensive experience supporting PCI DSS compliance programmes, including 3-D Secure (3DS) environments. He is also an ISO/IEC 27001 Lead Auditor, Certified Information Security Manager (CISM), and CISMP certified. In addition, Clive has significant experience working with regulatory frameworks such as HIPAA, the Gramm–Leach–Bliley Act (GLBA), and the General Data Protection Regulation (GDPR) across regulated industries.

20 years
Martyn Martynowicz

Martyn Martynowicz

Co-founder & CEO

Martyn has more than two decades of experience in the IT and information security sector.

Experience and background

Martyn is an ISO/IEC 27001 Lead Auditor and Lead Implementer and holds the qualification of PCI Professional (PCIP – Payment Card Industry Professional). He has extensive experience working with PCI DSS and NIST-aligned security frameworks and a strong background in developing and overseeing security programmes that protect the confidentiality, integrity, and availability of business-critical information.

20 years
Mark Daeche

Mark Daeche

Co-founder & Chair of the Board

Mark is a software engineer by training with decades of experience in the software industry.

Experience and background

Mark held senior management and executive roles within the global PC software industry across the United States and Europe. His career spans large-scale corporate environments as well as entrepreneurial ventures in technology-driven markets.

Celeste Roux

Celeste Roux

Director of Operations

Celeste has a professional background in operations, marketing, and sales, with formal experience in customer service management and commercial operations across multiple industries.

Experience and background

Celeste’s expertise spans operational oversight, customer engagement, and marketing support, enabling effective alignment between service delivery, sales functions, and organisational objectives.

Fiona Howard

Fiona Howard

Senior Cybersecurity Consultant

Fiona holds a Master’s degree in Information Security and is a PCI DSS Qualified Security Assessor (QSA), as well as an ISO/IEC 27001 Lead Auditor and Lead Implementer.

Experience and background

Fiona’s professional experience spans a range of IT and security environments, with a particular focus on PCI DSS certification and information security assurance.

OUR COMMITMENT

Security you can understand.

We believe clear advice and transparent reporting help you make better decisions. Our team brings practical cybersecurity and privacy experience to the challenges your organisation faces.

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Our partners

SysGroupAiphoriaAlphacommMi-PayMultiMediaMUFGdubberRaiffeisen