2 search results - page 1 / 1 » POSH: a generalized captcha with security applications |
CCS
2008
ACM
13 years 7 months ago
2008
ACM
SAC
2010
ACM
14 years 9 days ago
2010
ACM
CAPTCHAs protect online resources and services from automated access. From an attacker’s point of view, they are typically perceived as an annoyance that prevents the mass creat...