Statistics
Publications
7
Citations
1.2K
H-Index
7
Active since
2007
Affiliations
Newcastle University(Current)
Ahmad Salah El Ahmad is an author at Newcastle University specializing in computer science, computing, and computer security.
Publications per year
2007–2011
7
7
A low-cost attack on a Microsoft captcha
Jeff Yan, Ahmad Salah El Ahmad · 2008 · 402 citations
Usability of CAPTCHAs or usability issues in CAPTCHA design
Jeff Yan, Ahmad Salah El Ahmad · 2008 · 329 citations
The robustness of a new CAPTCHA
Ahmad Salah El Ahmad, Jeff Yan, Lindsay Marshall · 2010 · 71 citations
CAPTCHA Design: Color, Usability, and Security
Ahmad Salah El Ahmad, Jeff Yan, Wai-Yin Ng · IEEE Internet Computing · 2011 · 59 citations
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