INTRODUCING UNIT 42'S ATTRIBUTION FRAMEWORK

Summary from the TLDR InfoSec newsletter

Unit 42's three-tier attribution framework tracks threats from activity clusters to named threat actors, requiring rigorous evidence like Diamond Model mapping and Admiralty System scoring for source reliability (A-F) and credibility (1-6). It mandates six-month observation, multiple sources, and TTP analysis before tier promotion, preventing premature attribution and enabling focused tracking. Default scores apply to common artifacts, with analyst adjustments and review board validation.