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1
vote
0answers
23 views

Captcha unification mechanism in different browsers?

How the captchas which are generated from one site could be valid at the same time but in 2 different browsers (e.g. IE and FF)? What makes this separation? How I can find these values or factors? I ...
16
votes
3answers
4k views

How does Google's new re-captcha work?

As far as I know, google has changed its re-captcha to a new one for google chrome browser. Google URL Shortener uses this kind of captcha. This re-captcha verifies that "We are not robot" ...
-2
votes
1answer
1k views

Batch - Using wget (or similar service) to pass a captcha request

I need to download this file... h**p://www.vhannibal.net/download_setting.php?id=1 ...using Wget from promt of dos of my Windows. Currectly i used GnuWin32 wget 1.11.4.3287......... when i put ...
0
votes
1answer
71 views

Why does a site suddenly thinks my network is compromised?

I am on Debian 6 with all updates installed. I was trying to open a link from archtecturelab.net, when up pops this warning page (see below). What's going on? I don't have any windows machines on my ...
22
votes
2answers
1k views

How does recaptcha know you aren't entering bogus translations of the pictures [closed]

From what I understand, Captchas are text that have been distorted by the application of filters, noise and other miscelaneous algorithms. Therefore, to find out whether the person's reading ability ...
2
votes
3answers
130 views

Can CAPTCHA be tweaked by bots?

Now a days text recognition within image is possible. For example in Microsoft onenote you can search a text in image. So is it a chance for bots to tweak the CAPTCHA ? By using the same technique can ...
2
votes
1answer
95 views

Short cut key to put cursor in recaptcha box

Is there a shortcut key that will put the cursor back in the recaptcha box?
-1
votes
1answer
3k views

Proxy servers and captcha [closed]

Captcha isn't showed if I surf some sites through proxy servers. I don't remove scripts and objects.
3
votes
1answer
912 views

Where does RECAPTCHA get those words from? [closed]

I’m asking just out of curiosity. Today I encountered several really strange words while being captchaed by RECAPTCHA: indelms sumbetat polietry grevolfa If these were reasonable words in any ...