This book embodies the curriculum taught by Bruno Ciroussel at the 'Institute for the Fight against Economic Crime' (ILCE in french) in Neuchâtel from 2001 to 2006, with a subsequent technical refresh in 2024. The course taught catered primarily to students from the realms of justice, police, finance, and to a lesser extent, journalism. The book is divided into two, the first part delves into the human aspects of computer security, offering insights on managing these elements to mitigate their impact as effectively as possible. The second part introduces the concept of a Security Operating Center (SoC) for cybersecurity and discusses the application of artificial intel-ligence in developing a smart SoC, supplemented by tangible examples of existing market solutions.