Aerospace systems are a target for cyberattacks. Sophisticated attacks no longer exploit vulnerabilities in technical systems but exploit the human factor. The myth that aerospace systems are difficult to attack will be dissolved by providing an insight on the ease of information acquisition by the application of open source intelligence. Methods and tools from the field of psychology and organisational development will be introduced to show how attacks may be designed and how the countermeasures must be adapted to protect the information assets of an organisation.