This intrigues me, especially after reading a lot about WW2 ciphers and sneaky techniques by the British, etc.
Are there any known/famous cases of governments/military powers consistently and ambitiously creating one or more fake layers of "incompetence" around their operations, as to trick the enemy? I mean, something along the lines of:
- Entity X is actually extremely smart with extremely sophisticated security, way ahead of everyone else.
- The same entity "leaks" or "lets the enemy find out" about their seemingly sophisticated security layer, which they believe is the actual security, but is just nonsense/made-up intelligence, made to appear to be real, and possibly even revealing some parts of actual positions/plans, to appear as authentic as possible.
- While the enemy rests assured that they have broken their security, they actually go on for a long time (maybe decades or even longer) with their actual secret operations never being discovered, because they have successfully sent everyone on a wild goose chase with their fake "incompetence".
- The enemy eventually realizes this and then it's too late.