Limiting user login attempts in PHP

Posted by artarad on Stack Overflow See other posts from Stack Overflow or by artarad
Published on 2009-03-25T00:07:41Z Indexed on 2010/04/25 9:13 UTC
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php

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security

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login

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captcha

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brute-force

Hi there, I'm seeing web apps implementing limitations for user login attempts.

Is it a security necessity and, if so, why?

For example: you had three failed login attempts, let's try again in 10 minutes!!

thanks :)

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