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The lack of the central authority can also make cryptocurrencies safer. "It's hack-evidence for the reason that there is not any just one central issue of failure," points out David Donovan, govt vice chairman at Publicis Sapient.Αυτό παρέχει μεγαλύτερη αυτονομία, καθώς και μικρότερη ευπάθεια �