If you are writing Services for Windows then you need to read the just released Microsoft Knowledge Base article on Best Practices and Guidance for writers of Service discretionary access control lists.
Service discretionary access control lists (DACLs) are important components of workstation and of server security. This Microsoft Knowledge Base article describes how to interpret the DACLs on services. This article also provides best-practice guidance for writers of service DACLs when they are developing and assessing the security of their programs.
For a better understanding about access rights and permissions, visit the following Microsoft Web site: