Absolutely, defence in depth is how real systems are designed, dont know why you're being downvoted. https://en.wikipedia.org/wiki/Defense_in_depth_(computing)

Absolutely, defence in depth is how real systems are designed, dont know why you're being downvoted. https://en.wikipedia.org/wiki/Defense_in_depth_(computing) https://en.wikipedia.org/wiki/Defense_in_depth_(computing) For the same reason, security-by-obscurity is also a valid (though not sufficient) tactic for one of those layers (which also surprises people). Its about delay and demotivation to slow down your attackers.