Volume 12 (2020)
Volume 11 (2019)
Volume 10 (2018)
Volume 9 (2017)
Volume 8 (2016)
Volume 7 (2015)
Volume 6 (2014)
Volume 5 (2013)
Volume 4 (2012)
Volume 3 (2011)
Volume 2 (2010)
Volume 1 (2009)
1. SEIMCHA: a new semantic image CAPTCHA using geometric transformations

M. Mehrnejad; A. Ghaemi Bafghi; A. Harati; E. Toreini

Volume 4, Issue 1 , Winter and Spring 2012, , Pages 63-76

http://dx.doi.org/10.22042/isecure.2015.4.1.7

Abstract
  As protection of web applications are getting more and more important every day, CAPTCHAs are facing booming attention both by users and designers. Nowadays, it is well accepted that using visual concepts enhance security and usability of CAPTCHAs. There exist few major different ideas for designing ...  Read More