The exponential growth of the number of cyber threats and attacks is rebutted by a wide range of statistical provided by reports published by the major security firms. The scenario is really scaring due concomitant action of cybercriminals, hacktivists and state-sponsored hackers that are producing malware and botnets of increasing complexity. The main purpose of malware is the cyber espionage, in fact sensible information and intellectual properties are privileged targets of cybercrime and foreign governments. Many legitimate companies are selling espionage products, acquired by private companies and intelligence agencies to spy on competitors and opponents.”]