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short for operational security. used by military and government personnel.
"dude dont tell your girlfriend when we are deploying thats opsec"
opsec by caffeine22 September 19, 2005
The word "opsec" is often referred to by cheaters as how they hide their online and offline activity with their affair partner(s) from their partner (spouse) at home.
The only way to have perfect opsec, is to not cheat to begin with.

They will never find out about my affair partner because my opsec is next level.
opsec by ClassicRow_idk November 11, 2024

opsec nazi

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"
opsec nazi by jimb000bies July 27, 2012

Opsec Warrior 

An individual described as an "OPSEC Warrior" is someone dedicated to ensuring operational security, and their focus would be on preventing the compromise of sensitive information, protecting against unauthorized access, and generally maintaining the confidentiality and integrity of operational activities. This role may involve risk assessment, implementing security measures, educating others on security best practices, and actively monitoring for potential threats.
"Kayte runs 15 VPN's at all times, she is such an OPSEC Warrior."
Opsec Warrior by 1syp November 26, 2023

bad opsec 

A hacker's failure to practice operational security (OPSEC), leading to exposure of personally identifying information. Common mistakes include using personal information in emails that you use for black hat activity, leaving financial paper trails, not hiding your IP address properly through services like TOR and Tails, not using encryption technology such as cryptocurrency and PGP encryption -- and most importantly, failure to shut the fuck up.

Typical outcomes for a cybercriminal practicing bad opsec include getting doxed, extorted, ratted on, or worse, arrested and indicted by the federal police.
Ross Ulbricht got fucked by the feds because he exercised bad opsec. He posted a question in a clearnet forum looking for advice on programming his dark net market and urged candidates to write to a gmail containing his full name.
bad opsec by CaliBanging August 9, 2024

bad opsec 

Kali @abuseknk is the definition of bad opsec.

facedthejury is da best >_<
"Omg Kali just got leaked again, she has bad opsec bro!!"
bad opsec by rory >_< August 12, 2024