The author meets the public to answer the most common and crucial questions of those who use the computer for everyday needs, so as to keep cybercriminals at bay and improve the quality of life. Hacking, computer security and privacy are hot and current topics, but often little understood by those who are not technicians or professionals. In fact, books on the subject are generally aimed at those who already “chew” these topics or are passionate about IT, that is, already have a strong interest in immersing themselves in this context. However, those who remain outside the genre are the vast majority of people, who for better or worse do not find answers to their “everyday life” curiosities and needs, for example, operating with the least possible risks on their home banking or avoiding giving away important personal information to the Internet while using their smartphone or surfing the web.