Crime Prevention Through Environmental Design focuses on design, placement and the way the building is used as a means to increase security in an aesthetically pleasing manner. CPTED principles can vary from place to place and firm to firm, but the three that are fairly standard are Natural Surveillance, Natural Access Control, and Territorial Reinforcement. These principles, though most easily used when designing a new building, can be used in virtually any type of building or scenario, new or existing. The 3-7 rule is an important component of natural surveillance as well, says Toby Heath.”]
Source: https://www.csoonline.com/article/3019245/how-to-increase-security-through-building-design.html