5G installations are becoming more present in our lives and will introduce significant changes regarding the traffic demand growing with time. The development of the 5G will is not only an evolution in terms of speed but also tends to be adapted in many contexts: medical, energy, industries, transportation, etc. In this article, we will briefly introduce the 5G network and take as an example the assessment we did with the DeeperCut team to place 3rd on the PwC & Aalto 5G Cybersecurity challenge to introduce possible attacks, but also the tools we developed at Penthertz.