Notes on verification

Wording matches Wikipedia's Espionage article, mirrored across derivative sites (Wikiwand, Policy Commons, EPFL), so not fully independent sourcing. However, the underlying premise is plausible given legal frameworks like FISA warrants and undercover law enforcement operations. [cascade flags: wikipedia_mirror_dropped_other_sources_exist | tier=unverified indep_score=0.3 clusters=2 claim_tier=notable] [rescored 2026-09-15: curated origin-host map (PR #65); unclassified hosts no longer scored as aggregators]