I think it was outed as such long ago.
Sabu was a mole for the FBI, and was directing activities including Occupy Wallstreet.
At the same time, he was being directed BY the FBI.
https://en.wikipedia.org/wiki/Hector_Monsegur
I don’t think that after all that, the FBI would cease all infiltration into the group. There are certainly more moles in that group working for the CIA and Justice Dept one could pretty safely assume.
That’s just the wikipedia link above, there is plenty more info out there. I recently watched a documentary on it (though the name of it eludes me, it was on Netflix).
It is hard to figure with all these alphabet agencies, but presumably it would be NSA that would have a mole or moles in anonymous.
Of course these days probably the FBI is spying on the CIA which is spying on the NSA which is spying on the FBI.
The national security state has definitely jumped into surreal mode at this point.