In Germany alone, industrial espionage and cybercrime cause annual losses of 5.6 billion euros. In the majority of cases, such attacks start with a phishing mail. In targeted attacks, sometimes half of the recipients of a phishing mail click on phishing links or open dangerous file attachments and thus allow the attackers access to sensitive company data or private information, for example. In order to prevent such attacks, it is therefore important to sensitize all employees about the risks and correct handling of phishing e-mails.