Questions tagged [captcha]

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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 ...
18
votes
3answers
9k 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" ...
4
votes
2answers
2k views

How does “I am not a robot” captcha work?

Is it a graphic, thus requiring bulky OCR which most bots lack (apparently)? Even so, it is a fixed graphic and would not really require OCR'ing just simple pattern matching against a library of one ...
4
votes
1answer
10k views

Why is reCAPTCHA image fade in/out so slow?

So reCAPTCHA has one of those challenges where you have to click images and new ones fade in to replace them. Why do the images fade out/in so slowly at times? At times it's almost instant, sometimes ...
3
votes
1answer
1k 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 ...
2
votes
3answers
157 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
273 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
vote
1answer
5k views

“Attention Required” message while browsing sites

I use Google Chrome browser. Recently I'm seeing the "attention required" page more frequently, as shown in the following image. It's asking me to select some images and prove that I'm not a robot. ...
1
vote
0answers
10 views

How to fight against Google Captchas appearing on searches from a school network? [migrated]

When I do a Google Search from our school network, every time we have to solve a Captcha, because Google identifies it as unusual traffic. We analyzed the traffic for a while and there is definitely ...
1
vote
0answers
47 views

Using reCaptcha in qutebrowser

I'm trying to pass one of the "I'm not a robot" captchas, using an unmodified qutebrowser. I'm on version 1.5.2, and when I click the box it just loops and doesn't terminate. I've tried clicking the ...
1
vote
3answers
11k views

How to change reCAPTCHA language on websites?

I want reCAPTCHA to be shown in English on all websites i visit like sign up pages and etc, but it is in Persian. Like this: I tried Changing language in account settings to refresh it, clearing ...
1
vote
0answers
58 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 ...
1
vote
1answer
265 views

Why internet traffic behind ISP is not subject to captcha like a VPN?

When I'm using the internet from my ISP 'directly' (I mean with no VPN or proxy), I can surf the web freely and almost never encounter a captcha but as soon as connecting to a VPN service, captchas ...
0
votes
2answers
3k views

How does Google know I have HOLA vpn installed when it's not running?

I installed Hola and my google search was redirected to a Google page stating " "Our systems have detected unusual traffic from your computer network" and made me enter a CAPTCHA to prove I'm not a ...
0
votes
1answer
83 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 ...
0
votes
1answer
47 views

How can I script data entry on a website with a captcha? [closed]

I have several thousand records stored in a text file that I need to enter into a (JavaScript-based) web page, one record at a time. After I enter each record I need to parse the returned data and ...
0
votes
0answers
36 views

Why reCAPTCHA v2 lets SPAM through on my woocommerce webshop?

My Wordpress WooCommerce webshop developed a spam problem. The spam is not displayed but affects public product rating and therefore quality of google search results. The thing is I am not able to ...
0
votes
0answers
70 views

Ho to add capcha option to Mobirise's form?

I've brought some small changes to Mobirise's form and now it doesn' work at all. Can't receive any messages. I only added the captcha option as the block didn't have it. Do you know if it's possible ...
0
votes
0answers
525 views

Captcha required using my static IP address

Everytime I open one of many websites, I have to pass the captcha challenge, I have a static IP address for my Sisco 1900 series fiber optics connection, and another static IP address for the ADSL ...
-1
votes
1answer
8k views

Proxy servers and captcha [closed]

Captcha isn't shown if I surf some websites through proxy servers. I haven't removed any scripts and objects.
-1
votes
1answer
54 views

Google upload/packet errors (maybe)

I have been having a strange problem sending certain kinds of data using Google's services. I can't sync using Google Drive nor can I use any captchas (I click the pictures it tells me to, but when I ...
-2
votes
1answer
3k 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 this ...