Espionage, often known as spying, is the act of obtaining secret or confidential information without the permission of the holder of the information. It is typically carried out by government agencies, military organizations, or private corporations to gain an advantage over competitors or adversaries. The term is derived from the French word espion, meaning "spy." In Hebrew, espionage is called ריגול (rigul), while in Spanish it is espionaje, in German Spionage, and in Russian шпионаж (shpionazh). Espionage can involve various methods, including human intelligence (HUMINT), signals intelligence (SIGINT), and open-source intelligence (OSINT). It plays a significant role in national security, military strategy, and corporate competition. The legality and ethics of espionage are often debated, as it can involve deception, infiltration, and the violation of privacy.