This material is about safer ICT to be used in the classroom: information security and privacy, copyrights on the Internet, harmful and illegal content. The Internet is a real part of today's world, it is useful and entertaining. It is also used in schools now. Nowadays, young people tend to prefer watching television or socializing with friends than living in the real world. However, they must be aware that they are both in the "real" world as well as in the "virtual" one. Risks do exist: viruses, spam, but also potentially harmful and illegal content, such as child pornography, violent content and the misuse of personal data and credit cards. Also excessive use of the Internet may lead to addiction. Teenagers must be encouraged to be responsible and prudent e-users.