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HIP
2005
Springer
208views Cryptology» more  HIP 2005»
13 years 11 months ago
A Highly Legible CAPTCHA That Resists Segmentation Attacks
A CAPTCHA which humans find to be highly legible and which is designed to resist automatic character–segmentation attacks is described. As first detailed in [BR05], these ‘Sc...
Henry S. Baird, Michael A. Moll, Sui-Yu Wang
ICDAR
2005
IEEE
13 years 12 months ago
ScatterType: A Legible but Hard-to-Segment CAPTCHA
The ScatterType CAPTCHA, designed to resist character– segmentation attacks and shown to be highly legible to human readers, is analyzed for vulnerabilities and is offered for e...
Henry S. Baird, Michael A. Moll, Sui-Yu Wang
JUCS
2006
123views more  JUCS 2006»
13 years 6 months ago
Persian/Arabic Baffletext CAPTCHA
: Nowadays, many daily human activities such as education, trade, talks, etc are done by using the Internet. In such things as registration on Internet web sites, hackers write pro...
Mohammad Hassan Shirali-Shahreza, Mohammad Shirali...
KDD
2009
ACM
168views Data Mining» more  KDD 2009»
14 years 1 months ago
CAPTCHA-based image labeling on the Soylent Grid
We introduce an open labeling platform for Computer Vision researchers based on Captchas, creating as a byproduct labeled image data sets while supporting web security. For the tw...
Peter Faymonville, Kai Wang, John Miller, Serge J....
WWW
2010
ACM
14 years 1 months ago
Large-scale bot detection for search engines
In this paper, we propose a semi-supervised learning approach for classifying program (bot) generated web search traffic from that of genuine human users. The work is motivated by...
Hongwen Kang, Kuansan Wang, David Soukal, Fritz Be...