Proton, the company known for its privacy-focused email service Proton Mail, has launched Lumo, a new AI chatbot designed with a strong emphasis on user privacy and data security. Lumo offers features such as document summarization and code generation while ensuring that all conversations are protected through zero-access encryption and a strict no-logs policy. The chatbot processes data on-device, preventing Proton or any third parties from accessing user information. Lumo is open-source and auditable, allowing transparency in its privacy claims. The service is available for free without requiring users to sign up. Proton positions Lumo as a privacy-first alternative to other AI assistants, highlighting its commitment to safeguarding sensitive information and resisting data tracking or surveillance.