Old Friend, this information might be helpful if you're looking to fix the CAPTCHA problem:
Like any security system, design flaws in a system implementation can prevent the theoretical security from being realized. Many CAPTCHA implementations, especially those which have not been designed and reviewed by experts in the fields of security, are prone to common attacks.
Some CAPTCHA protection systems can be bypassed without using OCR simply by re-using the session ID of a known CAPTCHA image. A correctly designed CAPTCHA does not allow multiple solution attempts at one CAPTCHA. This prevents the reuse of a correct CAPTCHA solution or making a second guess after an incorrect OCR attempt.[5] Other CAPTCHA implementations use a hash (such as an MD5 hash) of the solution as a key passed to the client to validate the CAPTCHA. Often the CAPTCHA is of small enough size that this hash could be cracked.[6] Further, the hash could assist an OCR based attempt. A more secure scheme would use an HMAC. Finally, some implementations use only a small fixed pool of CAPTCHA images. Eventually, when enough CAPTCHA image solutions have been collected by an attacker over a period of time, the CAPTCHA can be broken by simply looking up solutions in a table, based on a hash of the challenge image.
tips and tricks for 4th job 12/17/2010 - Grand Chase Philippines - 22 Replies hey..
I am getting really tired of having my lass becoming a slasher
hanggang ngaun..step 2 plng aq
tips and tricks po..
cno gs2 magshare??
Gacha Tips/Tricks [Sealed bead tricks] 11/25/2010 - Grand Chase - 25 Replies is there anyway to complete an epic sealed bead set with just using a less amount of scrolls? if there is tell me the trick or tip to do it :) please help, if you want to keep it a secret just pm it to me and I promise you i wont spread it :D
NOOB!!!!!!!!
Bad for us
