This volume constitutes the refereed proceedings of the 8th IFIP WG 11.2 International Workshop on Information Security Theory and Practices, WISTP 2014, held in Heraklion, Crete, Greece, in June/July 2014. The 8 revised full papers and 6 short papers presented together with 2 keynote talks were carefully reviewed and selected from 33 submissions. The papers have been organized in topical sections on cryptography and cryptanalysis, smart cards and embedded devices, and privacy.

Sweet Dreams and Nightmares: Security in the Internet of Things.- A Security Analysis of Key Expansion Functions Using Pseudorandom Permutations.- Towards More Practical Time-Driven Cache Attacks.- Orthogonal Direct Sum Masking: A Smartcard Friendly Computation Paradigm in a Code, with Built in Protection against Side-Channel and Fault Attacks.- New Countermeasures against Fault and Software Type Confusion Attacks on Java Cards.- A Pre-processing Composition for Secret Key Recovery on Android Smartphone.- Usable Privacy for Mobile Sensing Applications.- A Secure Genetic Algorithm for the Subset Cover Problem and Its Application to Privacy Protection.- End-to-End Secure and Privacy Preserving Mobile Chat Application.- S-box, SET, Match: A Toolbox for S-box Analysis.- Policy-Based Access Control for Body Sensor Networks.- Personal Identification in the Web Using Electronic Identity Cards and a Personal Identity Provider.- CAN Bus Risk Analysis Revisit.- AU2EU: Privacy-Preserving Matching of DNA Sequences.- Early DDoS Detection Based on Data Mining Techniques.