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| author | Dallas Taylor <dallastaylor@gmail.com> | 2009-04-27 01:05:22 +0100 |
|---|---|---|
| committer | Dallas Taylor <dallastaylor@gmail.com> | 2009-04-27 01:05:22 +0100 |
| commit | 9d9adc998d5d0abba39d1ac06254cabf8bc93d55 (patch) | |
| tree | ed5956d1a48701e0fcc3c0e13bcccef1bce673d7 /railties/guides/source/security.textile | |
| parent | 1703fbbcef454eb9e63106c929ed90f4988fd43b (diff) | |
| download | rails-9d9adc998d5d0abba39d1ac06254cabf8bc93d55.tar.gz rails-9d9adc998d5d0abba39d1ac06254cabf8bc93d55.tar.bz2 rails-9d9adc998d5d0abba39d1ac06254cabf8bc93d55.zip | |
fixed typo and clarified sentence
Diffstat (limited to 'railties/guides/source/security.textile')
| -rw-r--r-- | railties/guides/source/security.textile | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/railties/guides/source/security.textile b/railties/guides/source/security.textile index 1b64cc1be7..7b93fa7561 100644 --- a/railties/guides/source/security.textile +++ b/railties/guides/source/security.textile @@ -497,7 +497,7 @@ Depending on your web application, there may be more ways to hijack the user's a h4. CAPTCHAs --- _A CAPTCHA is a challenge-response test to determine that the response is not generated by a computer. It is often used to protect comment forms from automatic spam bots by asking the user to type the letters of a distorted image. The idea of a negative CAPTCHA is not to ask a user to proof that he is human, but reveal that a robot is a robot._ +-- _A CAPTCHA is a challenge-response test to determine that the response is not generated by a computer. It is often used to protect comment forms from automatic spam bots by asking the user to type the letters of a distorted image. The idea of a negative CAPTCHA is not for a user to prove that he is human, but reveal that a robot is a robot._ But not only spam robots (bots) are a problem, but also automatic login bots. A popular CAPTCHA API is "reCAPTCHA":http://recaptcha.net/ which displays two distorted images of words from old books. It also adds an angled line, rather than a distorted background and high levels of warping on the text as earlier CAPTCHAs did, because the latter were broken. As a bonus, using reCAPTCHA helps to digitize old books. "ReCAPTCHA":http://ambethia.com/recaptcha/ is also a Rails plug-in with the same name as the API. |