The future of advanced artificial intelligence models holds significant potential for economic and national security implications, requiring robust security measures to prevent theft or misuse. Governments and frontier AI labs must prioritize securing these models and their underlying research, implementing best practices such as two-party control, secure software development frameworks, and public-private cooperation to protect against malicious actors and insider risks. These measures can begin with voluntary arrangements but may eventually be mandated through government procurement or regulatory powers to ensure the security of critical infrastructure and prevent misuse of this powerful technology.