The Internet massively influenced the way we communicate with each other. For most of us, online communication is simply part of everyday life. Countless e-mails are opened, forwarded and answered. In this way, information can be passed on quickly, easily and cost-effectively. Your e-mail program somehow does not work properly? Let’s start browsing the Internet – it’s easy to find a forum where someone describes similar problems or other users share useful tips with the online community. As you can see, there is no doubt that online communication offers many advantages. However, the everyday use of e-mails and other electronic means of communication, which is taken for granted, tempts people to become careless and thus to recognise potential risks too late or not at all. This makes it all the more important to know what you should really pay attention to when using online communication to reduce the risk of negative consequences.