How often do you think you are being fooled on the Internet? Or maybe you realize that something is manipulation or fraud, but do not understand why and who needs it. The Facebook test 'Which saint looks after you', the message 'Tomorrow Viber becomes paid, forward this further and it will remain free for you', the request like 'Send this message and we will transfer 1 cent for treatment' and thousands of other variations have a single goal - to deceive you. The book contains the main frauds of the digital world in the format 'essence - cause - consequences - what to do' explained in a simple language and based on specific examples.