Currently, the wired and wireless networks used in the railway domain are usually heterogeneous, not enough protected and not fitted to the usual Cyber Security requirements in terms of sustainability, protection and attack detection. Some communication systems have already been protected by cryptographic techniques for instance. However, the quick evolution of the telecommunications means, the threats and the sustainability aspects have not been taken into account in this context. This paper aims at introducing the challenges of Railway sector to protect its infrastructure and to fulfil the requirements of Cyber Security.
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