зашифрований текст
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innocuous text message
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clear text
clear-text radio traffic
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secret (security classification)
secret
secret agent intelligence
Secret Intelligence Service (SIS) / Military Intelligence, Section 6 (MI6)
secret internet protocol router network (SIPRNET)
secret service
top secret (security classification)
top secret
state secret
be drawn from secret intelligence
be marked top secret
foreign secret agent
give away the secret by careless talk
clear secret
clearance for top secret work
secret clearance
secret defense service
secret language
secret post
secret qualification clearance
secret security clearance