NuCaptcha

NuCaptcha is a Canadian-based CAPTCHA service. It is different than other services because it uses a video-based CAPTCHA and can adapt to easy challenges for legitimate users and difficult ones for attackers.^[1][2][3]

References

1. ^ "Animated CAPTCHA tech aims to fox spambots". The Register. http://www.theregister.co.uk/2010/07/01/animated_captcha/. Retrieved 14 July 2010. 
2. ^ "NuCaptcha Flash CAPTCHAs to combat spambots". http://www.h-online.com/security/news/item/NuCaptcha-Flash-CAPTCHAs-to-combat-spambots-1032147.html. Retrieved 14 July 2010. 
3. ^ "Spammers to Face Video CAPTCHA Technology - Security from eWeek". eWeek. http://www.eweek.com/c/a/Security/Company-Looks-to-Slow-Spammers-With-Video-CAPTCHA-Technology-127193/. Retrieved 14 July 2010. 

External links

• NuCAPTCHA homepage