Technology and Practice of Passwords

This book constitutes the thoroughly refereed post-conferenceproceedings of the 9th International Conference on Passwords, PASSWORDS2015, held in Cambridge, UK, in December 2015.The 6 revised full papers presented together with 3 revised short paperswere carefully reviewed and selected from 32 initial submissions. Thepapers are organized in topical sections on human factors, attacks, and cryptography.