It's a logo for privacy which has a padlock on it. The lock is made up of a rounded rectangle with a half circle on top. There is a circle in the center of the padlock where the dial is and there is a reflection on it.
This page contains the Privacy vector icon, as well as variations of this icon in different visual styles, and related icons. All icons are in the flat vector style, however, differ by the line thickness, fill, and corner radius.