The first rule of warfare is "know your enemy". Who are you trying to defend against who will be clever and persistent enough to work against all those defenses?

The limited expense rule of defense is that if you can make your adversary spend more on the attack then the value of the target, then the rational adversary will go someplace else.

If you believe your adversaries are simply selecting targets at random, then it doesn't make sense to use defenses that vastly exceed those that demonstrably are effective for the broad population.

If you believe that your adversaries have an irrational opposition to you personally and have the ability to spend infinite amounts of resources and talent accomplishing their goal, then you probably really are paranoid and should seek psychiatric help.

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