Collocations for espionage - noun

corporate, economic, industrial
The big computer companies are very worried about industrial espionage.

international
American, British, etc.

be engaged in, be involved in, conduct (esp. AmE), engage in
be executed for, be imprisoned for

activity, operations (esp. AmE)
evidence of espionage activities in Australia

case (esp. AmE)
one of the most important espionage cases of the 20th century

investigation
agent (esp. AmE)
network (esp. AmE)
thriller (esp. AmE)
She has written eight espionage thrillers.

espionage against
She was found guilty of espionage against the United States.

espionage on behalf of
espionage on behalf of foreign states

the world of espionage
the shadowy world of espionage