Espionage or spying is the act of obtaining secret or confidential information or divulging of the same without the permission of the holder of the information. Spies help agencies uncover secret information. Any individual or spy ring (a cooperating group of spies), in the service of a government, company or independent operation, can commit espionage. The practice is clandestine, as it is by definition unwelcome. In some circumstances it may be a legal tool of law enforcement and in others it may be illegal and punishable by law. Espionage is a method of gathering which includes information gathering from non-disclosed sources.