Trusted by European institutions and partners
A cyber attack can disable a satellite. A compromised satellite can derail a defense operation. Serving these three domains as one demands rare cross domain expertise.
We design security architectures for critical infrastructures, classified environments and defence programmes. Hardening, vulnerability management, application security and accreditation support for NATO and EU classified programmes.
More than ten years of experience in space programmes. We protect satellite communication and control infrastructures and support compliance with space and defence standards.
We support the security and resilience of military programmes and classified systems. Architectures for classified environments, integrated cyber defence, post quantum communications and on site support in Belgium and abroad.
OLTRE supports defence and aerospace programmes in the protection of high criticality systems and NATO and EU classified environments. Our work spans security accreditation, secure architecture design, hardening, vulnerability management and application security, with operational capability in Belgium and internationally, including sensitive contexts.
Corporate member of AFCEA International since 2026.
Deliver advanced cybersecurity and defence advisory to Governments, NATO and European Institutions, with a constant focus on resilience, innovation and operational superiority. We support accreditation processes for classified systems and protect Command and Control infrastructures and space domains, ensuring structural security and mission continuity in highly critical contexts.
Securing the future beyond every limit, integrating cyber, defence and space in a unified strategic vision that delivers technological superiority, operational resilience and long term security across critical domains.
Integrity, technical excellence, discretion and a long lasting commitment to our institutional clients across Europe and NATO.
A single integrated team specialised in security accreditation for NATO and EU classified systems.
European excellence in producing the security documentation required to accredit NATO and EU classified systems, with specific competence in NATO Federated Mission Networking and interoperable architectures between allied nations.
Security architecture design for highly classified systems, hardening, vulnerability management and application security for mission critical programmes.
More than ten years of experience in ground segment security. Protection of satellite communication and control infrastructures for strategic space programmes.
Security engineering for military programmes, integrated cyber defence, post quantum communications and on site operational support on classified systems in Belgium and abroad.
Advanced training programmes in counter intelligence and risk management for organisations operating in highly critical contexts.
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 establish a clear baseline.
We craft a proportionate, durable security architecture aligned with European and NATO standards.
Our engineers deliver hands on, integrating with your teams and your existing technology stack.
We support operations, accreditation and continuous improvement over the long run.
Direct answers on accreditation, training and how we work.
Security accreditation is the formal authorisation that allows a system handling classified information to operate. For NATO and EU classified systems it verifies, through documented security requirements, risk assessment and security operating procedures, that the system protects information up to its classification level. Without accreditation, a classified system cannot enter service.
European and international institutions, defence organisations, space programmes and operators of critical infrastructure: environments where systems are classified, highly critical or mission critical.
Each programme costs EUR 8,000 and runs for 40 hours over five working days. Delivery can be remote, on site or hybrid; remote delivery allows unlimited participants.
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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