Clients & Partners
We operate across three intertwined frontiers, protecting data, infrastructure and sovereignty for the most demanding European stakeholders.
From advisory to red teaming, we secure the digital backbone of European institutions and critical operators. Designed for NIS2, DORA and ISO 27001.
We secure satellite communications, ground stations and the industrial supply chains behind Europe's strategic space programmes.
Cleared consultants delivering security engineering for classified environments, NATO and EU Restricted systems, and full accreditation support.
Oltre CSD is a Brussels-based consultancy focused on cyber, space and defense. We combine deep technical expertise with hands-on delivery to protect what matters most to Europe.
Request information →Build a more secure, sovereign and resilient Europe by delivering trusted advisory and engineering at the highest level.
Be the reference partner for cyber, defense and space programmes that shape Europe's strategic autonomy.
Integrity, technical excellence, discretion, and a long-term commitment to our clients and to Europe.
Four practice areas, one integrated team.
Strategy, governance, risk and compliance aligned with NIS2, DORA, ISO 27001 and EU cybersecurity frameworks.
Penetration testing, red teaming and vulnerability assessment for applications, infrastructure and OT systems.
Secure SDLC, threat modeling and DevSecOps pipelines for mission-critical software.
Security engineering for classified environments, NATO and EU restricted systems, accreditation support.
Five flagship programmes for cyber, space and defense practitioners. Forty hours over five working days. Unlimited participants when delivered remotely.
Six specialist programmes designed to strengthen organisational resilience and the protection of information in highly critical environments. Additional programmes can be delivered on client request.
Identification of behavioural indicators, organisational controls and techniques to protect against information leakage. Case studies drawn from classified environments.
Request this course →Methodologies to assess risk in NATO and EU classified environments. Threat identification, vulnerability analysis and definition of security countermeasures.
Request this course →Techniques to protect classified information, the need to know principle, compartment management and the sanitisation of systems and media.
Request this course →Integrated management of operational and strategic risk for organisations in highly critical contexts. Governance frameworks and resilience indicators.
Request this course →Practical workshop on producing the security documentation required to accredit NATO and EU classified systems, with focus on Federated Mission Networking architectures.
Request this course →Operationalise NIS2, DORA and the Cyber Resilience Act end to end. Governance, risk management, supply chain and SBOM, incident response and mandatory 24/72-hour reporting, operational resilience and audit readiness.
Request this course →Need a programme calibrated to your environment, your stack and your accreditation context? We design custom training paths for institutional teams.
Build my programmeA rigorous engagement model in four steps, calibrated to the sensitivity of your environment.
We map your assets, threats and regulatory exposure to build a clear baseline.
We craft a proportionate, future-proof security architecture aligned with EU and NATO standards.
Our engineers deliver hands-on, integrating with your teams and existing stack.
We support operations, accreditation and continuous improvement over the long run.
We are hiring cyber, space and defense specialists who want their work to matter, and to be done well.
Attach your CV to the email. We review every application and reply personally.
We can protect your systems and strengthen your processes and infrastructure: NATO and EU accreditation, security engineering, space and defence programmes, on-site operational support. We respond within one business day.
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