A CAPTCHA is an acronym for Completely Automated Public Turing test to tell Computers and Humans Apart, that represents a type of challenge-response test. This is used by the web application to determine whether or not the user is human. There are many servers that use a Captcha image for security mechanisms. CAPTCHA protection is an ineffective security mechanism and is the best use for “rate limiting” protection. The current CAPTCHA system can be easily cracked by online services.
The impact include:-
Beagle recommends the following fixes:-