The course “Penetration testing and Ethical hacking” took place on 27-28 July 2016. The course teacher is Alexander Dorofeev from Autonomous non-profit organization «Training center «Echelon». Students focused on the main stages of testing the safety of information systems during these two days. The study cases include the collection of information on the Internet for testing, either vulnerability analysis, which takes place manually or using special scanners.The laboratory work was focused on the exploitation of vulnerabilities in network services. Beginners ethical hackers intercepted network traffic, picked up passwords, exploited web-apps attacks, gave an administrative access to specially prepared vulnerable machines.