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This book constitutes the refereed proceedings of the 13th International Conference on Information Systems Security, ICISS 2017, held in Mumbai, India, in December 2017.

The 17 revised full papers and 7 short papers presented together with 2 invited papers were carefully reviewed and selected from 73 submissions. The papers address the following topics: privacy/cryptography, systems security, security analysis, identity management and access control, security attacks and detection, network security.

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Privacy/cryptography.- Systems security.- Security analysis.- Identity management and access control.- Security attacks and detection.- Network security.

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