I've heard it as a verb for sure -- "I've been red-teaming at X Corp for a while now" But in a broader sense it's oppositional actions taken against a "good gu

I've heard it as a verb for sure -- "I've been red-teaming at X Corp for a while now" But in a broader sense it's oppositional actions taken against a "good guy", usually with the goal of improving the good guy aka the Blue Team. Think Starcraft or other video games where you have a little radar in the corner; good guys are blue, bad guys are red.