In the discourse about having sex at protest camps, I saw someone argue that UK spycops used sex/dating to gain access lefty spaces as grounds for banning sex. Which yes that happened.
But!
The prosecutions from their undercover activities is only one of the goals. The second goal of infiltration is always spreading fear. "Trust no one. Anyone could be a cop. The police are always watching you."
If you believe anyone could be a cop and that means you shouldn't sleep with anyone in "the movement" then you might as well believe anyone could be a a cop and you should make friends and take no actions.
Sex can be a joyful human activity and trying to crush budding connections from arising in autonomous utopian space is going to crush spirits more than stop repression. In fact, banning sex *is* repression. It's the State's hand working through you.
Everyone, literally everyone, should read "Confidence. Connection. Courage. Trust." It is unquestionably the best and most useful text on security culture. It proposes taking a positive andnooen approach to security instead of letting fear close us off.
https://www.sproutdistro.com/catalog/zines/security/confidence-courage/