encrypt

The app is marketed as a fully end-to-end encrypted messaging service - meaning only the sender and recipient of a message can read it - like WhatsApp and Signal.

To protect against data contamination, the test writers discussed their problems only over encrypted Signal servers and refrained from using online text editors, where an AI might glimpse their plans.

"They’re now using an encrypted data link instead of radios when speaking to the ground," he said.

Most of the messages he exchanged with his contacts on the encrypted communication app Telegram were deleted.

The anonymity of everyone involved was guaranteed by the encrypted TOR browser.