CLAROTY control systems ( ICS ) that was created by Theodore Williams in the ‘ 90s . He said this model is now starting to collapse because of the increased levels of connected technology , including IoT and 5G . This , along with the aforementioned attack surface , means much bigger perimeters that stretch beyond just one building that CSOs and CIOs need to protect .
He uses car production as an analogy . “ Take for example a brake manufacturing plant in the Czech Republic . The car manufacturer may use a headlight manufacturer in Poland and a computer component manufacturer in China . All of these places reflect the expanding attack surface , so you are now trying to protect this massive perimeter and at the same time you have to be aware of the greater potential for lateral movement across connected supply chains . This could be someone gaining access through a back door and then moving across the network . This is one of the biggest challenges we face and is critical when it comes to securing industrial environments .”