Secure & private communications
End-to-end encryption is easy to claim and very hard to get right. We engineer it properly — built on MLS, with a server that genuinely can't read your users' data.
Most “encrypted” apps still trust the server.
True end-to-end encryption — especially for groups, multi-device and recovery — is one of the hardest problems in software. Get a detail wrong and the guarantee quietly disappears. It's a rare skill, and it's exactly what we do.
Encryption that holds up to scrutiny
The complete secure-communications stack — designed so the math, not the policy, protects your users.
End-to-end encryption
Messaging and calls encrypted on the device, decryptable only by intended recipients — built on the IETF MLS standard for modern group security.
Server-blind architecture
The server routes ciphertext and never holds keys or plaintext. Even a full server breach exposes nothing readable.
Key management & rotation
Forward secrecy and post-compromise security with automated key rotation, device management and safe re-keying.
Secure group messaging
Efficient, scalable encrypted group chats with cryptographically enforced membership — MLS is built for groups, not just 1:1.
Multi-device & recovery
Seamless multi-device sync and account recovery flows that preserve the security guarantees instead of breaking them.
Auditability & compliance
Tamper-evident audit trails and controls mapped to HIPAA, GDPR and financial regulations — without weakening encryption.
The server stays blind — by design.
Keys live on user devices. The backend only ever sees and forwards ciphertext, so there's no plaintext to leak, subpoena or sell. This is the architecture we've already built — encryption handled entirely on the clients, with the server kept out of the trust boundary.
- Production experience implementing MLS-based encrypted messaging
- Server-blind designs the operator genuinely cannot read
- Security-first, zero-trust engineering discipline
- Open-source-focused — no black-box crypto, no lock-in
For the industries where privacy isn't optional
When confidentiality is a legal or competitive requirement, server-blind encryption is the only safe answer.
Healthcare
HIPAA-grade patient messaging, secure telehealth and PHI-safe collaboration.
Financial services
Confidential client comms, deal rooms and regulator-ready audit trails.
Legal & professional
Privileged communications that stay private — even from the platform.
Government & defense
Sovereign, on-prem deployments where data must never leave your control.
Need communications you can actually trust?
Whether it's a regulated product or a sovereign deployment, we'll design encryption that stands up to audits and adversaries alike.