Writing secure SQL queries can be one of the most important factors in your site’s security, yet I see so many people that don’t do it. So many programmers write queries that “just work” taking little consideration of the malicious potential of unsecured code - SQL queries included. This post is going to show some examples of bad queries in MySQL and how to correct them.

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My blog was starting to get several registrations a day.  I had a total of ~100 user registrations, and I am pretty sure most if not all of them were bots.  Because I am sick of bots registering, I deleted all of them and disabled user registration.  So…if I deleted your account by mistake, I apologize.  Please send me an email, and I will restore your account right away.