But not authorized access to interact with the Google Home networked computer device.
If it were that easy, that same lawyer could argue that because you operate a public HTTP server, any "attacks" on it are simply using the implicit permission you provided by exposing port 80/443 to the internet and operating a public service on it.
If it were that easy, that same lawyer could argue that because you operate a public HTTP server, any "attacks" on it are simply using the implicit permission you provided by exposing port 80/443 to the internet and operating a public service on it.