The book by a professional counterintelligence officer and writer examines the main methods of secret intelligence penetration into the development of an object (SAVRO), which in the last third of the 20th century were used by the main intelligence services of the planet - the KGB and the CIA. Based on impressive factual material, the role of the “composers” of operational developments is shown – agent officers and voluntary performers of their compositions – secret agents. The book is intended for the general reader.