Anarchist organizations are actually much harder to infiltrate than Communist or Fascist organizations - this is a known problem for the FBI among others.

The reason for this is that most anarchist organizations are comprised of cells (a small number of people who know and trust each other) and those cells collaborate to form syndicates or unions or communes or whatever your flavor of Anarchism calls them.

Cells are naturally better at opsec because of their non-hierarchical, decentralized, consensus-based, and often friendship-based nature. Also anarchists are just a lot more security-aware than other leftist groups in my personal experience.

In terms of offensive capabilities... trans catgirl hackers.