This Secure icon is made in Material Design style developed by Google. This style is based on extremely simplified shapes, thin two-pixel lines, and is optimized for 24x24 px. Unlike other vector icon packs that have merely hundreds of icons, this icon pack contains 4,300 icons, all in the same style and quality.
This icon includes a larger circle that has a rectangular shape with rounded edges in the middle. In the middle of the rectangle is a black shape that looks like a key hole. It has a curved line that is attached to the top of the rectangle.