Today on Decoder, the first of a two-part series examines the systems that run the world through a conversation with Bart Butler, chief technology officer at Proton, the firm behind private and secure productivity tools.

Proton is best known for Proton Mail, which encrypts messages by default, yet the company also offers documents, spreadsheets, a calendar, and a new AI assistant named Lumo. All are designed and promoted as far more private than offerings from major technology firms.

Bart explains that Proton ultimately sells trust rather than individual products. In the software sector, trust depends not only on company leadership but also on the underlying technology and the corporate framework that aligns development with proper incentives. The challenge lies in growing to compete with large technology companies while upholding those core values.

This approach is reflected in Proton structure and location. The company and its servers are situated in Switzerland, partly due to the nations geopolitical neutrality. Two years ago Proton adopted a nonprofit model overseen by a foundation, a structure used by various organizations claiming to serve the public interest.

The discussion covers these elements but centers on how Bart translates high-level ideals of user trust into practical, privacy-centric features that can endure policy demands. Earlier this year the Swiss government sought payment data that helped the FBI identify a protester linked to the Stop Cop City movement in Atlanta. Proton complied, prompting questions about how the company handles such requests and when it chooses to resist.

Proton has stated it would exit Switzerland if necessary, and Bart indicates the firm might also withdraw from European Union nations such as Germany and Norway should surveillance laws advancing through European courts endanger its privacy goals. He describes these as serious considerations, with planning underway for potential departure from Europe if conditions worsen.

The interview explores broad frameworks before addressing child safety, age verification, and artificial intelligence, all of which test Proton principles amid pressing internet issues. The extended format allows depth on these topics.

Bart Butler, CTO at Proton, joined the program to outline the company ecosystem of privacy-preserving products that include mail, a virtual private network, file storage with collaborative documents, a calendar, a password manager, and video conferencing tools.

He notes that Proton revenue comes directly from users rather than advertising, aligning business incentives with user protection. Encryption ensures that much data remains inaccessible even to the company, limiting what can be shared in legal matters.

Trust, Bart says, is communicated through both technical architecture and corporate safeguards. End-to-end encryption serves as a foundation, yet the company also emphasizes user control over data sharing. Layers of engineering and legal structure together provide interlocking assurances that the firm will remain trustworthy.