This book constitutes the thoroughly refereed post-conference proceedings of the 20th
International Conference on Financial Cryptography and Data Security FC 2016 held in Christ
church Barbados in February 2016. The 27 revised full papers and 9 short papers were
carefully selected and reviewed from 137 full papers submissions. The papers are grouped in the
following topical sections: fraud and deception payments auctions and e-voting multiparty
computation mobile malware social interaction and policy cryptanalysis surveillance and
anonymity Web security and data privacy Bitcoin mining cryptographic protocols payment use
and abuse.