But what if (hypothetically) you bought the printer and turns out printer has a sim in it that sends every single print job via cellular n/w to server.
Don't buy printers on the black market. Get a signal jammer. Build a Faraday cage.
You are correct 'Build a Faraday cage' will solve the problem. But no one normally builds a Faraday cage. Right? So who will be at fault?
Of course it is impossible but if it does happen Or say someone randomly writes a key and it happens to be your wallet. Who is at fault?
Arguing about impossible scenarios is pointless. If a randomly generated private key wouldn't be safe, there would be no Bitcoin.
Right. Apologies if you felt we are arguing, just trying to make the point that no matter how secure one thinks their process is, it is possible that a mistake is made.
Point is to our knowledge, we followed all the steps securely.
My point is a simple Google search would have been enough to know it's compromised.
Yes. Correct. That is the mistake. Mistake is trusting the generator. But to us the whole process end to end was secure.