Quote:
Originally Posted by signupdamnit
I suspect that previous to using the captcha a trivial DoS attack might have been easier to carry out by simply signing up over and over again using various proxies and data to try to exhaust resources (such as available PIDs and the associated database). The captcha likely helps with this a bit.
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surly you can add somthing to prevent signing up more than once.
ie
once you sign up and try to re-sign up it takes you back to the page that you have to enter your username/password. and it you do it 3 times in a row, it would automaticly block you, for say 24 hours or longer.