CTO Hursh Agrawal assures that all user data is stored locally and encrypted, addressing previous security concerns associated with Arc.

The Browser Company has launched Dia, a new browser designed to replace Arc, which was previously halted to focus on this innovative project.

The decision to cease development of Arc was made in May 2025, as the company aims to create a more effective browsing experience with Dia.

First announced in December 2024, Dia integrates a personal AI designed to enhance user experience and productivity.

CEO Josh Miller emphasizes the importance of AI in modern browsing, noting the rapid growth of AI technologies like ChatGPT.

Dia incorporates AI features that allow users to access an integrated chat assistant without leaving the browsing tab, facilitating web searches and content inquiries.

This AI assistant is capable of understanding users' online activities, providing context-aware assistance for tasks such as research, writing, and shopping.

With context awareness, users can ask Dia to summarize or extract information from websites, making it particularly useful for research purposes.

Privacy and security are prioritized in Dia's development, with user data encrypted and stored locally to prevent unauthorized access.

However, the security measures for Dia's data storage are not fully disclosed, which raises concerns similar to those encountered with Microsoft's Recall feature.

The Browser Company hopes Dia will achieve the success that Arc did not, while maintaining its predecessor's aesthetic and appeal.

Current Arc members receive immediate access to Dia and can invite others to join the beta program, while non-members can join a waiting list.