Encrypted Communication Revolution: Proton's AI Assistant, Lumo, Offers Privacy at Its Core

Published: 23 Jul 2025
In a bold move towards privacy-focused communication, Proton unveils its AI bot, Lumo, pledged to offer unwavering security for user data.

In an age where privacy is often traded for convenience, Proton is flipping the script by launching their newest AI assistant, Lumo. Promising an impregnable security experience, this new chatbot has been designed with data protection as its main priority. Within Lumo’s infrastructure, all conversations are encrypted end-to-end and no logs are kept, thus creating a virtual fortress of privacy for its users.

Available through a web client and both Android and iOS apps, Lumo doesn’t require an account to engage and inquire. Lumo also facilitates the uploading of files to have the chatbot answer relevant queries. Users with a Proton Drive account can link it with Lumo to streamline access to cloud-stored files. Proton has made it clear that their primary focus is user privacy. Lumo thus operates on open source models, deploying these for research and development without appropriating user data for training its neural networks.

Unlike competitors, Lumo operates with open-source language models from Proton’s European data centers. This grants users greater transparency into the workings of Lumo and ensures their queries are never shipped out to third parties. Beyond Lumo, Proton has already shown adeptness in the AI space with its AI-powered writing assistant for its Mail product, which also operates device-bound.

In a world increasingly enmeshed in digital interactions, Lumo stands as a beacon for preserving privacy while maintaining reliable service. Proton’s commitment to eschewing partnerships with external AI entities augurs a new wave in AI – one that places user privacy above all else.