Too easy to crack

[ghost]

Sorry guys but your captcha very easy to crack 1/10.

First need create database on your images:

• then simple create fingerprint of all images eq:
  • red dots are saved color position
  • Then just compare all images from database

This is some kind of joke ?

[BrunoBernardino]

Closing because this is being discussed over at #2.

1. You're forgetting the point of the images/audio being custom per website.
2. Making a database per website being "attacked" is not a "minor cost".

Finally, visualCaptcha is about improving the UX for the people using your application, without diminishing security considerably, not targeted at things like google.com or apple.com where there are obviously other implications to take under consideration.

Thanks for your feedback anyway!

[CrazyPython]

@BrunoBernardino A hacker with four hours could break your security y downloading something like ConvNetJS and using it to recognize images. No GPU required.

[BrunoBernardino]

I can imagine that's possible for the default install everyone sees. I'd recommend those people use something like reCaptcha.