The default security model for Microsoft ActiveX controls is either "always safe" or "never safe" (for scripting or initialization). A control that is "always safe" can be used by any Web page author. The SiteLock ATL template enables an ActiveX developer to restrict access so that a control is only deemed safe when used in a predetermined list of domains. This limits the ability of Web page authors to reuse the control for malicious purposes.
Note: By default, the installer copies the ATL template, utilities, and documentation to the "C:\Program Files\Microsoft\SiteLock 1.15" folder. Copy sitelock.h to your include directory or into your Visual C++/ATL project to use it.