Uh, pretty sure firewalls are exactly how we can fix this. Use your firewall to enforce each device can only talk to what it needs to and can&#x27;t do any harm internally.<p>Without firewall: Here&#x27;s direct access to everything on my network.<p>With firewall: Oh no, you can hack all my smart lightbulbs and change their colours.<p>This kind of thing is exactly you need firewalls for. Without a firewall this could pose a serious threat, with a firewall it&#x27;s probably a good practical joke at best.