Proton’s AI Chatbot Lumo Prioritizes User Privacy

Proton, best known for its encrypted services like Proton Mail and Proton Drive, has now stepped into the AI space with a new privacy-first assistant named Lumo. Designed for people concerned about data surveillance, the AI chatbot Lumo can help users summarize documents, write emails, generate code, and more—all while ensuring that chats remain entirely private. Unlike most mainstream AI tools, Lumo stores data locally and uses zero-access encryption, meaning even Proton itself can't read your messages.

How Proton’s AI Chatbot Ensures Privacy

The core promise behind Proton’s AI chatbot is strong encryption and data protection. Proton’s zero-access encryption ensures that only users have the decryption key needed to read their chats. The company also applies TLS encryption during transmission and asymmetrical encryption on prompts, so that only Lumo’s GPU servers can decrypt the data during processing. These layers of security protect users against third-party access, including advertisers, governments, and even Proton itself. This privacy-first approach aligns with growing user demand for AI tools that don't exploit personal information.

Lumo Offers Features Without Compromising Security

Lumo comes with intelligent features like document summarization, web search, and file analysis, all while maintaining a secure environment. Proton disables web search by default to avoid exposing user activity. When enabled, Lumo uses privacy-friendly search engines, adding another layer of protection. Users can even link files from Proton Drive without compromising end-to-end encryption. Unlike many AI assistants that save conversations and use them for training, Lumo avoids storing personal data or uploading it to remote servers.

Why Proton's AI Chatbot Is Different from Big Tech Offerings

Proton is taking a bold stance against surveillance capitalism. While companies like OpenAI, Google, and Meta use AI to gather user data for training and targeted advertising, Proton’s AI chatbot is built around the principle of protecting user autonomy. CEO Andy Yen emphasized that Lumo is not just a tool, but a step toward AI that serves people, not profits. This people-first vision gives Lumo a strong identity as a trustworthy alternative in a landscape dominated by privacy-compromising giants.