233 search results - page 1 / 47 » CAPTCHA: Using Hard AI Problems for Security |
EUROCRYPT
2003
Springer
13 years 9 months ago
2003
Springer
We introduce captcha, an automated test that humans can pass, but current computer programs can’t pass: any program that has high success over a captcha can be used to solve an u...
SP
2010
IEEE
13 years 8 months ago
2010
IEEE
—Captchas are designed to be easy for humans but hard for machines. However, most recent research has focused only on making them hard for machines. In this paper, we present wha...
CORR
2011
Springer
12 years 8 months ago
2011
Springer
- Vulnerabilities related to weak passwords are a pressing global economic and security issue. We report a novel, simple, and effective approach to address the weak password probl...
ICNSC
2007
IEEE
13 years 10 months ago
2007
IEEE
— Today sending spams has turned to be a major problem in the Internet. It is so serious that more than 80% of the transferred emails are spams. As a result, various methods have...
SOUPS
2009
ACM
13 years 11 months ago
2009
ACM
The ASIRRA CAPTCHA [6], recently proposed at ACM CCS 2007, relies on the problem of distinguishing images of cats and dogs (a task that humans are very good at). The security of AS...