This article describes the analysis of data exfiltration using blockchain as it was used in a challenge for the CSCBEĀ 2018 qualifiers. TheĀ Cyber Security Challenge Belgium (CSCBE) is a typical Capture-The-Flag (CTF) competition aimed at students from universities and colleges all over Belgium.Ā All of the CSCBEās challenges are created by security professionals from many different organisations. …
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