Navigate the increasingly complex world of threat actor attribution with Recorded Future's comprehensive naming taxonomy. This white paper reveals how Insikt Group® systematically tracks and categorizes advanced persistent threats (APTs) from the "Big 4" nations—China, Russia, Iran, and North Korea—using a color-coded classification system based on national flags and NATO phonetic alphabet codewords. You'll discover the analytical framework behind our two-tier system that distinguishes between emerging threat activity groups (TAGs) and established named groups, with detailed mappings of 9 formally named APT groups and insights into over 80 tracked TAGs. This standardized approach enables security teams to accurately attribute cyber activities while avoiding confusion with overlapping threat actor names across the industry.