How to use disinformation against terrorists.
For example, frequent arrests of reported terrorists (even if bogus) and "leaks" suggesting that those terrorists are cooperating with authorities, may cause sleeper agents to lose faith in their organization, and even to wonder if their supposedly "secure" channels of communication have been compromised. Given that terrorists are unlikely to know many of their number, authorities could even "arrest" actors who portray members of the terror organization, leak enough truthful details about the organization to make it sound plausible, then give the impression that they are getting far more useful information in secret interrogations. They could even leak false reports that actual members of terror organizations have been picked up and released, instilling further doubts within the organization - especially when those members deny that it ever took place.