Definition of commercial espionage: Stealing secrets causes huge losses, and using espionage to protect yourself. The development of high technology makes commercial espionage "like a duck to water", making it easier to steal commercial information within enterprises. The so-called shopping mall is like a battlefield, and it is inevitable to deceive each other. It is understandable to collect business information through proper channels, but there are still businesses that ignore professional ethics and laws and arrange business spies to steal the business secrets of competitors.