Proton CTO on trust, Swiss law compliance, and threats to leave Europe over surveillance

Bart Butler, CTO of Proton, spoke with The Verge about how the Swiss-based privacy company translates its core values into technical products while navigating mounting government pressure. Proton, known for its encrypted email and productivity tools, transitioned to a nonprofit foundation structure two years ago to reinforce its public-interest mission. Earlier this year, Proton complied with a Swiss government request for payment data that helped the FBI identify a protester linked to Atlanta's Stop Cop City movement, raising questions about the limits of its privacy guarantees. Butler acknowledged that no company can fully shield users from legal compulsion, and warned that Proton is actively exploring what it would take to relocate outside Europe if surveillance legislation there becomes more restrictive. The company has publicly stated it would consider leaving Switzerland and EU countries such as Germany and Norway if new laws continue to threaten its privacy mission.