TTPrint: Diverge-then-Converge Verification Achieves High-Precision MITRE ATT&CK Extraction from Threat Reports

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Proposes TTPrint, a framework that separates candidate TTP generation from validation using a diverge-then-converge architecture, achieving both high recall and high precision on MITRE ATT&CK technique extraction from cyber threat intelligence reports. Existing LLM approaches hallucinate unsupported techniques; TTPrint's two-stage verification catches these. Applicable to automated threat intelligence pipelines.