SecureLink Talk

Calls and messages that stay just between you.

Encrypted communication for closed groups – company management, teams or the whole organisation. On your own server, for iPhone and Android.

Discuss Talk for our organisation

Encryption designed with the future in mind

Every call is protected by a combination of classical and post-quantum cryptography (X448 + ML-KEM-1024). Even if someone recorded a call today, according to current knowledge not even a quantum computer could decrypt it ten years from now.

Messages, photos and documents are encrypted directly on the sender’s phone and can only be decrypted by the recipient’s phone. The server cannot read the content of messages and calls.

Call encryption details in the SecureLink app

Safety word – make sure nobody has got into the call

At the start of a call, both sides are shown the same short safety word. Read it out to each other – if it matches, you know nobody has inserted themselves into the connection.

The app remembers the check and does not ask again next time.

Verifying a device with the safety word during a call

Closed groups instead of phone numbers

Nobody gets into SecureLink on their own – every account is created by the administrator, and people sign in with an invitation. Everyone sees only the people they need to talk to.

The app does not read the contacts on your phone and does not need a phone number – accounts are just random numbers.

List of conversationsMessage with an attached document

Under your control

Lost a phone? The administrator blocks it in one step and restores the account on a new one. Inappropriate content can be reported and the sender blocked right in the app.

Messages disappear from phones on their own after seven days at the latest.

Contact with options to report and block

At a glance

What you get.

iPhone and Androidthe same features on both
Post-quantum encryptioncalls designed to resist quantum computers
Your serverrented in your name, under your control
Open foundationproven software with public source code

How to get started

From the first conversation to the first encrypted call.

  1. You write to usHow many groups and people, and where the server should run.
  2. You rent a serverWe recommend a suitable provider. The server is yours – rented in your name, under your control.
  3. We install the systemThe server and the web administration, with a guide. You create users and invitations yourselves.
  4. We are here for youTechnical support, updates and help when something goes wrong.

Would you like SecureLink Talk for your team?

We install the system on your server and show you how to manage it. After that, you create users and invitations yourselves.

Get in touch