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Best CAPTCHAs that won't break your head

Don't you hate those CAPTCHAs that leave you squinting at the screen in irritated bewilderment? Here are some systems that are a little more user friendly.

8 Images By Oct. 29, 2012


3D-based Captchas become reality

YUNiTi.com announces the first implemented method of Captcha.

By Mar. 25, 2009


Spammers defeat Captchas

Spammers appear to defeat Captcha and use fake Microsoft and Yahoo Web mail addresses to spread spam.

By Jul. 10, 2007


3D images: A human way to create Captchas

A new way to create Captchas using 3D images would make it much easier for human beings to pass while remaining really difficult for computers.

By Mar. 18, 2009


Captchas: Is it just me, or are they getting harder to read?

There's got to be a better way to prove you're human.

By Dec. 4, 2006


CAPTCHA systems easy to foil, security firm finds

Imperva study finds CAPTCHAs, designed to keep spambots off Web sites, can easily be broken by humans and can turn people away if they are difficult or annoying to complete.

By Jun. 18, 2012


Outsmarted: Captcha security not much of a gotcha

Web sites including Blizzard, eBay, and Visa's Authorize.net use a flawed antibot mechanism, Stanford researchers say. They say companies should take security more seriously.

By Oct. 31, 2011


NuCaptcha takes on Google's ReCaptcha

Can't read your way past the humans-only gateway on that Web site? NuCaptcha has a filter that's easier for you, harder for robots.

By Aug. 11, 2011


Stanford University researchers break NuCaptcha video security

Borrowing from the field of machine vision, Stanford University researchers have discovered how to solve over 90 percent of NuCaptcha's are-you-a-human video challenges.

By Feb. 17, 2012