“Spy” is an ambiguous term, sometimes meaning “intelligence officer” and sometimes meaning “informant”. Most ‘spies’ in the sense that law enforcement is concerned are untrained civilians who have chosen to pass information to officers of a foreign country, for varying reasons. So if you see someone acting suspicious, an argument like “well surely a real spy would have been coached not to do that during spy school” is usually invalid.
“Spy” is an ambiguous term, sometimes meaning “intelligence officer” and sometimes meaning “informant”. Most ‘spies’ in the sense that law enforcement is concerned are untrained civilians who have chosen to pass information to officers of a foreign country, for varying reasons. So if you see someone acting suspicious, an argument like “well surely a real spy would have been coached not to do that during spy school” is usually invalid.