The "Industry 4.0" or the "Factory of the Future" has been with us for many years. Thus, the current society is already familiarised with these words that some years ago seemed to be exclusive for an expert in manufacturing and ICT (specifically, Information and Communication Technologies). Nevertheless, whenever these terms are mentioned in the media or in an event, only some limited aspects are considered as part of this kind of projects, for example, Big Data, the Internet of Things, Augmented Reality or Additive Manufacturing, among others. Despite this fact, dear reader, you should keep in mind that there are several technologies involved in the advanced manufacturing systems, not only the features usually presented by the media. The Industry 4.0 must manage the integration of 8 different technological aspects and one of them is usually forgotten: the cybersecurity.