The EaseFilter Registry Filter Driver Library provides you to develop the Windows registry security application. It allows you to monitor Registry access, and protect Registry access in real time. The EaseFilter Registry Filter Driver Library was powered by Windows registry filter driver, a registry filter driver is a kernel-mode driver that filters registry calls, it provides you an easy way to develop Windows application for registry monitoring and protection. With the EaseFilter Registry Filter Driver, it enables your application to protect Windows core registry keys and values and to prevent potentially damaging system configuration changes, besides operating system files. By registering a RegistryCallback routine in the registry filter driver, it can receive notifications of each registry operation before the configuration manager processes the operation. A set of REG_XXX_KEY_INFORMATION data structures which contain information about each registry operation will return to your user mode application, your application can allow the registry access or change to authorized processes or users, and deny the registry access to unauthorized processes or users.