Ahmad Salah El Ahmad

According to our database, Ahmad Salah El Ahmad authored at least 8 papers between 2007 and 2012.

Collaborative distances:

• Dijkstra number of five.
• Erdős number of five.

2012

The robustness of text CAPTCHAs.

Ahmad Salah El Ahmad

PhD thesis, 2012

CAPTCHA Design: Color, Usability, and Security.

Ahmad Salah El Ahmad, Jeff Yan, Wai-Yin Ng

IEEE Internet Comput., 2012

2011

Captcha Robustness: A Security Engineering Perspective.

J. Yan, Ahmad Salah El Ahmad

Computer, 2011

2010

The robustness of a new CAPTCHA.

Ahmad Salah El Ahmad, Jeff Yan, Lindsay F. Marshall

Proceedings of the Third European Workshop on System Security, 2010

2009

CAPTCHA Security: A Case Study.

Jeff Yan, Ahmad Salah El Ahmad

IEEE Secur. Priv., 2009

2008

Usability of CAPTCHAs or usability issues in CAPTCHA design.

Jeff Yan, Ahmad Salah El Ahmad

Proceedings of the 4th Symposium on Usable Privacy and Security, 2008

A low-cost attack on a Microsoft captcha.

Jeff Yan, Ahmad Salah El Ahmad

Proceedings of the 2008 ACM Conference on Computer and Communications Security, 2008

2007

Breaking Visual CAPTCHAs with Naive Pattern Recognition Algorithms.

Jeff Yan, Ahmad Salah El Ahmad

Proceedings of the 23rd Annual Computer Security Applications Conference (ACSAC 2007), 2007