About Ardaco
Twenty-five years securing the conversations that matter most.
Ardaco is a Slovak information and communication security company, headquartered in Bratislava, building technology trusted by governments, defence forces, and organisations in more than 50 countries.
Who we are
Built from the ground up, not adapted from consumer tools
Founded in 2001 and headquartered in the European Union, Ardaco has spent over two decades building secure communication and document protection technology from the ground up. Silentel, our secure mobile communications platform, has been NATO-nation certified since 2006, and remains in active development, most recently with post-quantum cryptography moving into live production.
Ardaco also maintains QSign, a qualified electronic signature platform, and PDMark, a document integrity technology.
What sets us apart
Verified by external authorities, not by us
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Independently verified, not self-declared
Silentel’s certifications and approvals come from external authorities, not internal claims.
What sets us apart
Verified by external authorities, not by us
Independently verified, not self-declared
Silentel’s certifications and approvals come from external authorities, not internal claims.
ISO 9001 certified
Regular auditing ensures consistent standards of quality and reliability across everything we build.
Security-cleared expertise
Key team members hold security clearances up to the highest levels, including NATO and EU clearance.
A track record that holds up
Zero data breaches across more than two decades of operation, in deployments across defence, government, and national security organisations worldwide.
Active in the wider security community
Ardaco participates in international interoperability and standards efforts.
Support
Support and technical contact
Every Ardaco deployment is backed by direct technical support, from installation through ongoing operation, with escalation available for partners and customers who need it.
Featured downloads
Reference material, available on request
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Silentel data sheet
A concise one-page overview of the Silentel platform: what it does, who it’s built for, and the certifications behind it. A good starting point before a deeper conversation.
Featured downloads
Reference material, available on request
Silentel data sheet
A concise one-page overview of the Silentel platform: what it does, who it’s built for, and the certifications behind it. A good starting point before a deeper conversation.
Sector briefs
In-depth positioning papers for specific operating environments, including the Intelligence and National Security brief.
Security and Trust overview
The principles behind Silentel’s architecture: verification, sovereignty, data minimisation, and layered encryption, explained at a level any decision-maker can act on. Full technical specifications are available on request, in a briefing.
Insights
The threat landscape, explained
A running collection of articles on the threat landscape facing government and defence communications: metadata exposure, cloud jurisdiction risk, post-quantum readiness, and what to actually ask a secure communications vendor before signing anything.
Browse the blogStay informed
Get updates on secure communications, not sales noise
Contact
Talk to the team directly
Bratislava, Slovakia
info [at] ardaco [dot] com