Until the AI finds a zero day exploit in physics, a faraday cage works pretty well to block WiFi.
replyIn the end, unless you find an exploit in physics or logic, if you want the AI to do something useful for you, there will always be some gap in the sandbox, some communication channel. And with enough ingeniuity that can then be exploited.
replyIn this case they wanted to test its cybersecurity capabilities and did not airgap it.
replyThe test itself did not require an internet connection.