What not to forget?

Question

I am currently working on an ajax application using PHP on the server side and javascript (jQuery) on the client side. I want to make sure that my application is as safe as possible and I need to know what is absolutely necessary to do before launching such an application. What to check and what are the most vulnerable areas? I do not ask you to go into details, but point out the most important things that you need to pay attention to. Thanks!

Answer 1

Look, I hope you find something that suits your situation:

What should a developer know before creating a public website?

Answer 2

, . ., , OWASP 10 2007 .

Answer 3

injections from the public are what I relate a bit to. You must ensure that the site is protected against SQL, HTML, JS and XSS injection.