Try my new CAPTCHA circle test

[spearfish]

Yeah - don't forget that agencies exist which will route CAPTCHAs to humans to solve.

[lax.slash]

I got 3 or 4 since I posted last. All from the same IP address.

[Akyhne]

That got lucky with registration???

[lax.slash]

Yup. FYI - I just installed BETA 2, and verified the bug that was posted earlier by ディン1031.

The letters never change when the new image is requested.

About the captcha
There is a small thinking bug in it .

If you create an new image (because you could not read it ;P), than the site with the information what is need to be read is not updated. If this not needed and will be the same than you can easy bypass it . If it change than how will the user know what he need to read.

Bye
DIN1031

[Akyhne]

The letters are not supposed to change. Only the shapes. I think you should change the wav sound to read all the text and not only the good letters. Then we can confirm wether they have cracked the sound.

[lax.slash]

OK... I'll do that in a bit, as I have to go somewhere right now.

[Akyhne]

Well, here's a version that reads all the fake code:

[Akyhne]

I updated the description in the first post, to make it more clear how the Cavecost CAPTCHA works.

As I don't have any forums that are bothered with spammers, it's very difficult for me to know how well it keeps spammers out.
So if you have a forum attacked on daily basis, I would appreciate if they would try the CAPTCHA.

I think it is the safest to use the attached version above this post as it may seem the wave readout of the code is cracked.

[karlbenson]

Very nice indeed.

Rather than just ramping up the complexity. The point with these mods are to make our forums registration more unique.
If you can do levels of complexity/random differences, then it makes it much harder / less profitable for spammers to attack our forums.

I've had loads of ideas for possible new captchas recently
- Rock Paper Scissors Lizard Spock - http://www.samkass.com/theories/RPSSL.html
- Periodic Table captcha (maybe H to hydrogen etc).
- Sorting three listboxes
- Cat and Mouse (well irony),  several pics, but only pic with cat+mouse in gets chosen (each pic has code in it)

[lax.slash]

Well, here's a version that reads all the fake code:

Installed, and working.

[Akyhne]

Hi Karl (regularexpression)

Yeah I have been thinking a lot the last year or more on different kinds of captchas that could b hard to solve. The problem is to make something that's simple for people to solve, but extreme hard for computers to solve.

And then again I failed in the first version of this captcha, where people had to point circles out with a specific color. Although there were only 8 colors that were very different, my first friend I asked to solve it failed... he was colorblind!! Well I had that in mind, but didn't realise color blindness could make it that hard.

[Akyhne]

Added two extra levels of diffuse letters in 1.0 Beta 2 rev. 2

File can be downloaded in the first post:
http://www.simplemachines.org/community/index.php?topic=278017.0

[lax.slash]

Added two extra levels of diffuse letters in 1.0 Beta 2 rev. 2

File can be downloaded in the first post:
http://www.simplemachines.org/community/index.php?topic=278017.0

I'm using it with Cavecost Hard. Let's see what happens...

[lax.slash]

With your latest version, I got hit 1/2 hour after I installed it. Using Cavecost high. Did that one have the "Listen to image" read the full text, or just part?


(Proof in attatched image)

[lax.slash]

Hmmm... you know what? I wonder if these bots are somehow possibly bypassing the CAPTCHA?

[Akyhne]

If you get hitted by spammers that got through, they will even get through on highest SMF level. There's nothing in my code that reveals or changes the standard SMF sequrity level.

So either it's a human, or it's someone who completely cracked the way the CAPTCHA works in SMF 1.1.7

And yes, the "listen to image" reads the fake code.

[Akyhne]

Yet another way to stop spammers. In this mod they also get banned on 3 fails:

http://www.simplemachines.org/community/index.php?topic=280188.0

[Akyhne]

Finally it's official

http://custom.simplemachines.org/mods/index.php?mod=1558