Confidential correspondence should not depend on foreign jurisdictions.
ARX is an independent French company building secure communication infrastructure for organizations that handle sensitive information.
Make confidentiality the default, not an option
ARX was founded by engineers from the security and telecommunications sectors who saw the same pattern again and again: sensitive negotiations, legal strategy and technical secrets traveling over systems that were never designed to protect them.
We chose a different approach. A closed network, a small number of carefully vetted members, and an architecture in which even we cannot read what our customers write.
- Independent. Privately held, with no foreign shareholders.
- Focused. We build one product and do not monetize data, ever.
- Accountable. Our infrastructure and staff are in France, under French and European law.
- Discreet. We never disclose who our customers are.
What guides our decisions
Minimal knowledge
We design every feature so that ARX learns as little as possible about the people who use it.
Defense in depth
No single control is trusted alone. Every layer assumes the one before it has failed.
Rule of law
We respond only to requests made under French law, and every customer receives our policy for handling them.
We hire rarely, and carefully
Our team is small by design. Every role involves access to sensitive systems, so all positions are based in France and subject to background screening. We do not publish the names of our staff; customers meet the team under NDA.
No open positions at the moment
We read every unsolicited application from experienced engineers in cryptography, systems and security operations. Write to careers.
Evaluate ARX for your organization
Access is granted by invitation. Our team will walk you through eligibility and onboarding.