As a website developer, you ought to know that security is always important. ExpressionEngine automatically checks user input for certain attack characteristics but this is not always enough. As it is designed for use within a wide range of situations, it is impossible to plan the security for every website and every situation. If you watch your server logs for very long, you will see a bot attempting to exploit any and every possible hole on your site.
Suppose that you need to look up entries by week. You pass the date as a URL segment to your template and utilize the Query module, right? What happens when a bot comes along and inserts a quote mark in the middle of your date segment? That is where this little plugin comes in.
We offer you the ability to pull URL segments and escape them for use in SQL queries or HTML. Additionally, you can pull data from the GET, POST, COOKIE, SERVER, and ENV variables. You can provide a default value (for when there is no user input) or validate what has been entered. Check the documentation for examples.