Why fridge need to have rights to initiate connection to something on internet ?
Why fridge need to even be reachable from the internet ?? You should have some AI agent for managing your "smart" home. At least it's how sci-fi movies/games show it, eg. Iron man or Starcraft II ;)
I was thinking of a reaction to a DDOS event, so those devices are flagged as being infected. You could prevent future attacks if those devices are ignored until they get fixed.
That is what ISPs do these days. Most botnet members don't end up spamming a lot of requests, usually just a few before they are blocked.
The issue with DDOS is specifically with the distributed nature of it. One single bot of a botnet is pretty harmless, it's the cohesive whole that's the problem.
To make botnets less efficient you need to find members before they do anything. Retroactively blocking them won't really help, you'll just end up cutting off internet for regular people, most of whom probably don't even know how to get their fridge off of their local network.
There's not really any easy fix for this. You could regulate it, and require a license to operate IoT devices with some registration requirement + fines if you don't keep them up to date. But even that will probably not solve the issue.
