onnectify Peers is a feature in Hotspot that searches the local network to locate other instances of Connectify Hotspot and shows them in the Connectify Peers section on the Clients tab. Users are then able to drag and drop to send files using the Fling feature or launch many other services that Connectify detects, such as Windows File Sharing or Web Servers. This does not mean those devices are connected to your network or have access to your network.
If you wish to disable this functionality, you can uncheck Network Peer Scanning from the Advanced Settings menu.