Seems clear to me it means don't go trying to change things over the internet.
Isn't it pretty standard to consider "local" to mean not remote or external? Local storage means storage on the machine, not attached via network or plugged into an external port. Localhost is the ip for the computer in question, not a remote one.
Maybe local means internal? My agent can’t list files on attached USB drives, and it can only read files on the drive (by full path) after asking me for permission.
This seems like a bad idea, what does local mean? Anything Grok can access locally? This seems like asking for trouble.