Risky Business · Tuesday, September 29, 2026
Run Zero's recent internet scan revealed over 5,000 directly exposed Backnet controllers, but critically, discovered more than 110,000 devices accessible behind them. These hidden devices include critical systems like door locks, relays, and fire safety sprinklers.
“So you can find devices behind other devices, even if they don't speak IP. So, backnet controllers are a really good example, that's most of your HVAC.”
“So we did an internet scan, we found about 5,000 devices directly on the internet. But behind them, we found over 110,000 devices that you can control.”
“So the stuff on the internet was pretty poor. It's like thermostat. But the stuff behind them is actually really important, like door locks, relays, um, you know, sprinkler systems, uh, all the uh, safety systems, the early warning for shooters, active shooter drills.”