Compartmentalization (isolation/separation of duties): Smart terrorist organizations divide themselves up into individual cells. Each cell has limited knowledge of the others, so if one cell is compromised the others remain secure. This is compartmentalization, which limits the effects of any particular attack. It’s the same idea behind different offices having their own key, or different accounts having their own password. You’ll sometimes hear this called “the principle of least privilege”: giving people only the access and privileges necessary to complete their job. It’s why you don’t have
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