Blockchain's contribution to privacy in cybersecurity: Use of RBAC, RGPD, ZKP algorithms

The success of opening up and sharing data while guaranteeing its security through Blockchain technology creates trust between the various users of this data. Sometimes described as a revolution, sometimes as an epiphenomenon, Blockchain is a technology that is gradually gaining maturity, enabling it to be used on an industrial scale. Cyber threats continue to evolve rapidly around the world, with the number of data breaches increasing every year. A report from Risk Based Security revealed that a staggering 7.9 billion pieces of data were exposed in the first nine months of 2019 alone. This is more than double (112%) the amount of data exposed during the same period in 2018.Problems frequently encountered in cybersecurity are linked to confidentiality. So our aim is to propose a mechanism that guarantees confidentiality in cybersecurity by implementing a customized Blockchain in a virtual environment using local multichains.