An apparatus and method of providing security information in a virtual environment that supports a plurality of operating systems. The plurality of operating systems include at least one secure operating system in which applications whose safety has been verified are installed, and at least one normal operating system in which applications whose safety has been not verified are freely installed. The server operating system may provide security information corresponding to an operating system in which an application executed as foreground is installed, to provide information indicating whether an application is operated in a secure operating system, to a user.