Defending against physical intrusion attacks - The under door tool.
Good morning all, how are we doing today? Watch anything good on Netflix recently? Many plans for the bank holiday weekend? Did you remember to deadbolt the office before you left yesterday? Wait… what? Yesterday the postman came. And this is what he brought me: What the hell is that? Well it’s an under door tool (UDT) of course. A thin piece of flexible metal attached to a string, that can be folded away and neatly concealed in a rucksack, belt, or there are even versions that can be dismantled and stored in a pocket (great video by the notsocivilengineer - showing a homemade collapsable UDT). So what does it do? And why should I care about your stupid bendy metal rubbish? This tool is designed to bypass the type of doors that are locked from the outside, but open with just an operation of the handle from the inside. They are usually accompanied by an RFID entry system or a code. This means you need to have the authentication to get in, but anyone can get out. And herein lies the f