Defensive perspective
From the defender's perspective, there is a lot you can do to throw the attacker off their game plan. It is famously said that defenders have the home-field advantage and thus can craft the environment to their advantage, or the disadvantage of an uninformed visitor. You may have heard of the 5 Ds of physical security: Deter, Detect, Delay, Deny, and Defend[16]. These are principles security professionals leverage when they have the home-field advantage to prevent physical threats. These are principles we will adapt to help prevent an attacker from reaching their end goal. We can also add a 6th D for our purposes, Deceive. Using these principles and the home-field advantage we can set up infrastructure that will actively hinder and frustrate the attacker, which will buy us more time to observe and respond as a defender. Thus far in this book, we've seen a bunch of ways to defend, deceive, and detect. In this section, we will start to visit some ways...
