Before designing a PPS, it is important to know against whom you are protecting your facility. This is particularly true in the DEPO process, which relies on the concept of threat-informed security design. The threat assessment is therefore essential to establishing the required performance criteria of the PPS.
Typically, threats are broken into three broad categories:
- Passive - the insider does not actively participate in any operation by the adversary but provides information such as target locations and security procedures
- Active nonviolent - the insider actively assists an operation through actions such as facilitating the adversary's entrance into the facility or disabling alarms along the adversary's path
- Active violent - the insider participates in a violent attack
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