Spying refers to the act of secretly gathering information about an individual, group or organization. It is typically done in a covert manner and may involve monitoring activities, eavesdropping on conversations, or collecting data through other means without being detected. Spies are individuals who engage in spying for governments, organizations or private clients to obtain sensitive information that can be used for various purposes such as national security, business intelligence or personal gain. The practice of spying has been around for centuries and is often associated with espionage, which involves the exchange of secret information between two parties.