Introducing Unit 42’s Attribution Framework

This report presents Unit 42’s Attribution Framework, a structured methodology for progressing from activity clusters to temporary threat groups and ultimately named threat actors using rigorously evaluated evidence. It prescribes the use of the Admiralty System for source reliability and information credibility, establishes minimum analytical standards across TTPs, infrastructure/tooling, victimology, and temporal analysis, and stresses transparency, consistency, and review governance. An illustrative example connects Stately Taurus and Bookworm to demonstrate how IoCs and TTPs are scored and reviewed before advancing attribution confidence.