ABOUT US
We help organizations make cybersecurity operational — by turning technical complexity into clear priorities, practical workflows, and measurable improvements.
J-C Varaillon
& Infrastructure Specialist
Designs secure network architectures and resilient infrastructures, with a pragmatic approach tailored to real-world operational environments.
Alexandra Divani
Helps organizations make vulnerability management work in practice — by improving visibility, prioritization, remediation workflows, and coordination across teams.
Hervé Morgenstern
Supports IT service management and collaboration platforms, including legacy environments such as Lotus Domino, helping maintain stability, continuity, and controlled evolution of critical systems.
Who We Are
VD Sentinel Advisory SAS is a boutique cybersecurity consultancy based in the Pays de Gex, serving organizations across the Greater Geneva area, France, Switzerland, Annecy, Lyon and beyond.
We specialize in vulnerability management, CTEM, secure network architecture and operational service governance. Our work focuses on helping organizations reduce exposure, strengthen resilience and make cybersecurity effective in real environments.
We are intentionally small. Every engagement is delivered directly by experienced consultants who understand the realities of modern IT environments, operational constraints and cross-team coordination. Our approach is pragmatic, senior-led and focused on improvements that can be implemented, measured and sustained.
Our Approach
Focused
We focus on what we know well: vulnerability management, CTEM, secure network architecture, and operational governance.
Practical
Our guidance is grounded in your reality — your teams, your tools, your constraints, and what can realistically be implemented.
Collaborative
We work closely with security, IT, network, operations, and business stakeholders to build alignment and shared ownership.
Transparent
We communicate clearly, avoid unnecessary jargon, and provide recommendations that support informed decisions and measurable improvements.
