short for operational security. used by military and government personnel.
"dude dont tell your girlfriend when we are deploying thats opsec"
by caffeine22 September 19, 2005
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a person that likes to go overboard with opsec... even when it isnt REALLY violated
"That fucking opsec nazi reported me again"

"the opsec nazi became hated for her naziness"
by jimb000bies March 11, 2012
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