Espionage refers to the practice of obtaining secret information without the permission of the holder. It involves gathering intelligence through covert activities such as spying, infiltration, or eavesdropping.
Related terms
Spy Network: A group or organization consisting of spies who work together to collect information and conduct covert operations.
Double Agent: A spy who pretends loyalty to one side while secretly working for the opposing side.
Cryptography: The practice of secure communication using codes or ciphers to protect sensitive information from unauthorized access.