This tutorial will show you how to ban people by IP address with php and mysql

After studying this tutorial you will be able to have a password protection system that uses cookies

Here you can learn more about Protecting Against CSRF Attacks On Websites

Reducing PHP Exploits on Your Site

The header function may seem relatively straightforward on the surface . You issue the function along with a header as the first argument and it does the rest for you. Many people rely religiously on the header function working to forward users to the next page.

Prevent Post Spam with IP Tracking

This tutorial tries to tell you that why you can not rely entirely on an IP

Learn a Simple code to stop hotlinking to your files

Learn how to avoid some of the most common mistakes in PHP

This is a PHP include file which does user authentication using the built-in HTTP basic realm authentication mechanism. This means you will get a browser pop-up asking the username and password

Creating A Permission System for users in conjunction with a login system

Learn how to protect Against SQL Injections On Websites

In this tutorial you will learn more about Prevent Image Hotlinking

Why would I want to validate PHP_SELF? It's a server side value, so how could it be a security issue? Wrong! It can be altered by the user for XSS (Cross Side Scripting). Read on!