Recently we came across a CAPTCHA solving service called DeCaptcher. As we proceed with the new Scraper Test Drive stage, we have encountered some off-the-shelf scrapers that use a 3rd party service for CAPTCHA solving. The DeCaptcher service is the most popular among them.
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TEST DRIVE: CAPTCHA
The new Scraper Test Drive stage is on, called CAPTCHA. What can the scrapers perform to get through the “robot fighters”? The off-the-shelf scrapers are not designed for CAPTCHA solving by default. Furthermore, some stated that “bypassing Captchas was compatible with Internet good ethics”. I agree with this, but for the full Scraper Test Drive taste, we still want to try out the scrapers. more…
Why are JavaScript CAPTCHAs not reliable?
While we did our CAPTCHA TEST DRIVE we realized that those JavaScript captchas we used for testing (like QapTcha and AJAX FANCY CAPTCHA) can be easily bypassed by sending a couple of simple POST requests. more…
Using CAPTCHA for spam protection
A CAPTCHA is a test to tell wether a user is human or a robot. It allows to protect web sites from robot intrusion, while allowing human users to navigate the site normally.
In this post we will scope out CAPTCHA types, services and the tools for CAPTCHA generation. Also we will investigate some CAPTCHA solving software and services and touch on new trends for CAPTCHA and bot protection techniques. more…
