strativaultSECURITY ADVISORY

INDEPENDENT SECURITY LEADERSHIP

Strong security.
Clear direction.

Executive security leadership, focused on your business. Build a practical security program, navigate risk, and move forward with confidence.

Start a conversationExplore the expertise
Fractional CISO & cybersecurity advisory
A STRONGER FOUNDATION FOR WHAT’S NEXT.
Strategy grounded in delivery.US & European engagements · Remote collaboration

Built for businesses where
trust matters.

Growing technology companiesCloud-first businessesRegulated environments

01 / EXPERTISE

The right expertise.
At the right level.

From executive decisions to engineering priorities, get security advice that connects the risks to what your business needs to do next.

01

Fractional CISO

Experienced security leadership on a flexible basis. Set the direction, align stakeholders, and keep your security program moving.

What we work on
  • Security strategy and prioritized roadmaps
  • Executive and board-level risk reporting
  • Program ownership, metrics, and team guidance
02

Governance, risk & compliance

Turn security requirements into a manageable plan. Prepare for assurance reviews and customer expectations with clear ownership and evidence.

What we work on
  • ISO 27001, SOC 2, and PCI DSS readiness
  • GDPR-related security controls and accountability
  • Risk assessments, policies, and control frameworks
  • Third-party risk and customer security reviews
03

Product & cloud security

Build security into how you design, develop, and operate. Give engineering teams practical guidance that fits their delivery process.

What we work on
  • Secure SDLC and software supply chain controls
  • Cloud and application architecture reviews
  • Threat modeling and security design guidance
04

Incident & resilience readiness

Know how to respond before the pressure is on. Strengthen the plans, responsibilities, and decisions behind an effective response.

What we work on
  • Incident response planning and tabletop exercises
  • Vulnerability and remediation oversight
  • Business continuity and recovery coordination
05

AI security & governance

Adopt AI with clear guardrails. Assess tools and use cases, protect sensitive information, and manage the risks of AI-enabled applications and agents.

What we work on
  • AI tool, integration, and use-case security assessments
  • Data protection and prompt injection risk reviews
  • Access controls, permissions, and human oversight for AI agents
  • AI usage policies, governance, and staff guidance
06

M&A security

Assess security risks before a deal and plan a practical integration afterward. Bring acquired businesses to a common security baseline while supporting business continuity.

What we work on
  • Security due diligence and risk reports
  • Post-acquisition security integration plans
  • Security operating models and common control baselines

A focused assessment, an ongoing advisory relationship, or fractional leadership—shaped around your priorities.

02 / THE APPROACH

Practical from
the first conversation.

Work directly with your advisor. Agree on the priorities, make the trade-offs clear, and focus effort where it will make a difference.

01

Understand

Start with your business, your obligations, and how your teams work. Build a clear view of the current risks and gaps.

A shared view of what matters
02

Prioritize

Agree on an achievable roadmap, with practical actions, clear owners, and a level of investment that fits your business.

A plan you can act on
03

Move forward

Support execution, work with your teams and partners, and help leadership see progress and make informed decisions.

Progress that stays visible

03 / YOUR ADVISOR

Senior expertise.
Personal commitment.

Security should help you make better business decisions—and give your teams a clear path forward.

Dionysios Alexopoulos

Founder, Strativault Security Advisory

Dionysios (Dion) Alexopoulos

Founder & Security Advisor

MEngMScCISSPCRISC

I’m a security executive with more than 15 years of experience across financial services, insurance, utilities, retail, and lotteries and gaming. I have advised CIOs and CISOs as a consultant and led the teams responsible for putting security strategy into practice. That combination shapes my approach: clear priorities, practical recommendations, and a realistic understanding of what it takes to deliver them.

My experience includes leading an international security function in a regulated environment, with board-level reporting. It spans application, cloud and corporate security, security architecture, and governance, risk and compliance, including security governance for AI assistants and agentic tools.

Through Strativault, I bring this experience directly to businesses that need executive security leadership, helping them turn complex risks into clear decisions and practical action.

US-registered independent advisoryBased in Europe · Working internationally
Get in touch with DionView LinkedIn profile

A FEW USEFUL ANSWERS

Before we talk.

When does a fractional CISO make sense?

When you need senior security ownership and direction but a full-time CISO is not the right fit yet. It can also help during a period of growth, a leadership transition, or a focused change in your security program.

Can we start with a specific project?

Yes. An engagement can begin with a security assessment, a roadmap, compliance readiness, or a review of a particular concern. Scope, deliverables, and ways of working are agreed before work begins.

Do you work with US and European companies?

Yes. Strativault Security Advisory LLC is registered in the United States, with remote advisory delivered from Europe. Working hours and collaboration arrangements are agreed to fit your team.

Does readiness support include certification?

Readiness support helps you identify gaps, strengthen controls, and prepare evidence for ISO 27001, SOC 2, PCI DSS, and GDPR-related security requirements. ISO certification and SOC 2 examinations are performed by independent certification bodies and audit firms; PCI DSS validation follows the assessment route applicable to your business. GDPR support focuses on security measures and accountability, working alongside your legal or privacy advisors.

04 / LET’S TALK

What’s your next
security priority?

Tell me a little about your business and what you need.
We can start with a conversation.

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