Causality Remembers: Teaching Social Media Defenses to Learn from the Past
Opening — Why this matters now Social media coordination detection is stuck in an awkward adolescence. Platforms know coordinated inauthentic behavior exists, regulators know it scales faster than moderation teams, and researchers know correlation-heavy detectors are brittle. Yet most deployed systems still behave as if yesterday’s parameters will work tomorrow. This paper introduces Adaptive Causal Coordination Detection (ACCD)—not as another accuracy tweak, but as a structural correction. Instead of freezing assumptions into static thresholds and embeddings, ACCD treats coordination detection as a learning system with memory. And that subtle shift matters more than the headline F1 score. ...