Certifications | Overwan

Overwan credentials and certifications: GNS (National/NATO Secret), PME Líder, PME Excelência, TOP 5/10 scoring and international certifications.

Recognitions & Credentials

Recognitions and credentials that confirm the strength, quality and security of our operation.

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Industrial Security · GNS

National Secret / NATO Secret Clearance

In January 2026, Overwan obtained the clearance issued by the Portuguese National Security Office (GNS) for access and handling of classified information with the National Secret and NATO Secret levels. In March 2026 individual clearances were granted to designated staff, reinforcing our capacity to deliver highly sensitive projects in the public sector, defence and critical infrastructure.

International Certifications

Globally recognised frameworks and certifications underpinning our practice in service management, information security, network infrastructure and technology operations.