They go on to propose that, “the best response consists in cognitive infiltration of extremist groups”,[44] where they suggest, among other tactics, “Government agents (and their allies) might enter chat rooms, online social networks, or even real-space groups and attempt to undermine percolating conspiracy theories by raising doubts about their factual premises, causal logic or implications for political action.”

However, our main policy idea is that government should engage in cognitive infiltration of the groups that produce conspiracy theories, which involves a mix of (3), (4) and (5)."

Cass Sunstein, 2008