Information obtained through espionage is referred to as intelligence.
Notes on verification
Well-corroborated by multiple reputable sources (Britannica, EBSCO) confirming that information gathered via espionage is termed intelligence, though some sources nuance espionage as a subset of intelligence gathering. [cascade flags: aggregator_dropped_primary_exists | tier=bronze indep_score=0.3 clusters=2 claim_tier=everyday]
Sources
- Espionage (wikipedia)
- https://www.ebsco.com/research-starters/military-history-and-science/espionage-and-intelligence (corroboration)
- https://graphsearch.epfl.ch/fr/concept/10501 (corroboration)