25 Zero-Trust Threat Management If you enter a room from the rear and if there is someone in the room who is not asleep, then they will not suspect you as an intruder. It is because those who come from the rear are not considered possible thieves or assailants.
You should never allow anyone from outside your province to come close to the guardhouse, even if he or she is a relative.
—Yoshimori Hyakushu #93
In feudal Japan, it was typical for traveling merchants, monks, priests, performers, entertainers, beggars, and other outsiders to operate in or near an active military camp or castle, as the encamped soldiers made frequent use of their services.1 However, some of these outsiders were secret operatives paid to collect information for the ...
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