How can I prohibit copying computer files, prevent computer files from being leaked, and prevent Enterprise Data leaks?

How can I prohibit copying computer files, prevent computer files from being leaked, and prevent Enterprise Data leaks?
How Can Enterprises and institutions effectively protect computer file security and prevent leakage through various channels. I recommend a dedicated software to protect computer files.
First of all, we need to download "disabled to the USB port to Disable software" (: http://www.grabsun.com/monitorusb.html), extract and directly click inside the "DszusbmonitorvV5.1", directly click the next step to complete the installation, as shown in:
 
Figure: Click Next to complete installation
 
Figure: after the software is installed on the USB port management software interface, you can see the interface directly (the official version will automatically hide the running and the password must be entered to call the software ). Select the check box to implement corresponding control. For example, you can disable USB storage devices, disable mobile phones, disable optical drive burning, disable Bluetooth, disable wireless NICs, and disable portable wifi, as shown in:
 
Figure: Disable USB flash drives, block USB storage devices, disable mobile phone storage, prohibit attachment emails, prohibit uploading of online files, prohibit uploading of FTP files, and prohibit uploading of QQ files. As shown in:
 
Figure: prevent computer files from being leaked through the network, the USB port shielding software can also disable Computer Management, disable group policies, Disable boot items, prohibit USB flash drives from starting computers, disable optical drives from starting computers, and disable press F8 to enter the operating system safe mode., in this way, the security of the computer is fully protected, and the related functions can be re-enabled by modifying the operating system configuration is also prevented, as shown in:
 
Figure: prohibit modification of operating system configurations to effectively protect the security of computer files. On the one hand, it is necessary to establish a corresponding computer file security management system and sign a complete confidentiality agreement with employees; on the other hand, specialized computer security management software, especially computer file encryption software and data leakage protection system are also required to prevent internal staff from leaking data.