defence in depth

English

Alternative forms

• defense in depth

Noun

defence in depth (countable and uncountable, plural defences in depth)

1. (military) A strategy that seeks to delay rather than prevent the advance of an attacker, potentially yielding a limited amount of territory in order to stress the attacker's logistics and reduce their momentum.
2. The use of multilayered protection to make a system reliable even if part of the protection fails.