20 years ago, china hide 2nd network card that was in listener mode, transmitting documents at random times, mostly peek. This was at a research company. How it was discovered. We put a card on listening/prem mode and mirror everything for that subnet the printer was on. I thought I screwed it up with the double mirror/traffic. when investigating why the issue, we found nothing wrong with the config, only when we plu…
Why was the printer connected to the public internet? A DMZ subnet would have prevented this vector of attack.
> Why was the printer connected to the public internet? A DMZ subnet would have prevented this vector of attack.
Aren't most network printers connected to office networks with public internet access? I sounds like this printer was making outgoing connections, and I doubt many people/companies go through the trouble of specially blocking those from printers.
You'd have to be especially security conscious and paranoid (especially 20 years ago!), to be operating under the assumption that your own equipment is working against you.