Hi, I am currently working on a project which is an investigation into windows file security. The aim of the project is to develop a user-friendly application which allows users to password protect objects such as files/folders/applications on a Windows operating system. I have done some studying into this type of application and I believe the key is to itercept Windows Hooks in order to divert the call to my application whenever a protected object is accessed. Could anyone help me out with some sample code that demontrates the basics of how I can configure a Security Descriptor to block access and apply it to an object? And some sample code of how to intercept Windows Hooks? Or even any information that concerns this type of project.