Corruption is a major problem linked to economic inequality, unemployment, crime, pollution and climate change, human trafficking and terrorism. The book examines it as a systemic phenomenon, exploring its economic and political causes and consequences, as well as the psychological and social problems that are generated by corruption. Methods for measuring corruption and the correlation of corruption indicators with indicators of economic, social and political development of countries are discussed. Methods of combating corruption, the reasons for their successes and failures are analyzed. Recommended for students of all courses, as well as for a wide range of readers.