Proton, a company behind a popular VPN and encrypted email service, has threatened to leave Switzerland if a new surveillance law is passed. The law would require VPNs and messaging apps to identify and retain user data, which Proton claims would violate the right to privacy. Another Swiss company, NymVPN, has also stated it would leave the country if the law is enforced. The proposed law has sparked controversy and debate about the balance between national security and individual privacy.