The present invention relates to a device for security and privacy that is securable to the frame of a window and mountable from the interior of a building. The device comprises a slanted front panel mounted at an angle to allow an open bottom panel and side panels to provide airflow. The panels may be comprised of a mesh screen material to allow airflow when secured in place over an open window, providing airflow and privacy while still providing a level of security for a user. A vertical frame mounts to the rails of a sliding screen along its upper edge, and secures around the bottom of the sliding screen to allow synchronized movement of the two during operation.