This is a Secure Cloud 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 12,800 icons, all in the same style and quality.
The image is of a cloud. It is flat on the bottom with curves on top to show its fluffy shape. In the center of the cloud there is a keyhole shape, consisting of a bulbous top end with a small narrow extension sticking downward.
Related to Secure Cloud Icon
Related icons are the icons with matching tags, as well as all network icons. All icons are in the same flat style. You can either download free PNG icons or buy SVG vectors