Gitcoin has launched its DAO, and is looking forward to bringing people to investigate, discuss and improve sybil-resistance.
Here’s a general description: Quadratic Lands
Here’s their discourse forum post on the topic: Anti-Fraud & Collusion Detection Workstream Assemble! - 🧙 🧙♀️ Workstream Discussion - Gitcoin Governance
I believe it’s important to have the PoH community to get involved there, since there’s a common goal.