Yes, this is exactly the kind of approach I'm referring to when I say it's possible (though not trivial to implement), but it still doesn't prevent attacks. Air France 447 crashed with extraordinary loss of life because the pilots responded incorrectly to reported sensor readings. Any scenario where authorised staff are able to affect changes in a control system is vulnerable. The attack vectors just change to suit the target system.
replyAF447 wasn't a security breach. You're talking about an entire separate class of human-machine interaction problem that has little relevance to the lack of security around access to OT operational surfaces.
replyAll fancier than a camera pointed at the thermostat readout I’m sure but is the laser & photocell anywhere close to similar in concept?
reply