According to ansa news agency on December 5, the Italian military enterprise Leonardo company leaked secrets from 2015 to 2017, and the valuable data and information were stolen. < / P > < p > it is reported that in the past two years from May 2015 to January 2017, about 10g of confidential data and documents of Leonardo company were stolen through the Trojan horse program implanted into the computer through the U disk, including the company’s financial, personnel, assets and other business information, as well as the design of military and civil aircraft parts. < / P > < p > after investigation, the Italian judicial authorities took preventive measures against two suspects. One former employee of the company’s information security department was arrested on suspicion of illegally entering the information system and the other person in charge of the company’s network emergency department was under judicial house arrest. < p > < p > Leonardo is the core enterprise of Italian defense industry, mainly engaged in aerospace, helicopter, electronics and information systems.