756 search results - page 1 / 152 » Leveraging the CAPTCHA Problem |
HIP
2005
Springer
14 years 12 days ago
2005
Springer
Efforts to defend against automated attacks on e-commerce services have led to a new security protocol known as a CAPTCHA, a challenge designed to exploit gaps in the perceptual a...
WCRE
2008
IEEE
14 years 1 months ago
2008
IEEE
CAPTCHAs are automated Turing tests used to determine if the end-user is human and not an automated program. Users are asked to read and answer Visual CAPTCHAs, which often appear...
EUROCRYPT
2003
Springer
14 years 2 days 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...
CVPR
2003
IEEE
14 years 9 months ago
2003
IEEE
In this paper we explore object recognition in clutter. We test our object recognition techniques on Gimpy and EZGimpy, examples of visual CAPTCHAs. A CAPTCHA ("Completely Au...
CORR
2011
Springer
12 years 10 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...