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Anthony Ferrara's Blog:
Security Review Creating a Secure PHP Login Script
August 03, 2011 @ 12:02:19

In response to this article from DevShed about creating a "simple and secure login script", Anthony Ferrara has written up this post to help dispel some of the inaccuracies, bad practices and security issues that could result from DevShed's code.

I decided to click the link [in my feed reader] and give the article a read. Not overly shocking was the fact that I didn't find the content of the article to be, how shall I say this..., overly factual. It's not really a "tutorial", but more of a "here's some code that's secure". A quick review of the code found more than one vulnerability, and some significant things that I would change about it (as well as a few "really bad practices").

He walks through each of the files included in the original tutorial - Authenticate.php, Register.php and Logout.php - and talks about things like brute force detection, password verification, registration handling and session serialization. He finishes it off with a list of twelve overall issues he noticed during his work along with solutions for each (usually very simple ones too).

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