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 is a Privacy icon. We've made it in iOS style
, first introduced in iOS version 7 and supported in all later releases up until now (at least iOS 11). This style is based on thin two-pixel lines and is optimized for 50x50 px. Unlike other vector icon packs that have merely hundreds of icons, this icon pack contains 13,700 icons, all in the same style and quality.