SCP’s main feature is its security – It allows for encrypted file transfers through the Secure Shell protocol (SSH) using any of these SSH Clients. If you are wondering what you would need an SCP application for, or what they do, then this article will outline all of the most important aspects of SCP. Today we will be looking at the Microsoft Windows variants of SCP. Although it was initially developed in a Unix environment, SCP would eventually find its way into many other operating systems. Secure Copy (SCP) are a safe and efficient way to transfer files over a network.