Phrozen Safe USB is described as 'Nowadays security is very important within a company or even at home. You should train yourself or your staff not to open mail attachments from unknown senders or not to download a tool from a suspicious looking website'. There are four alternatives to Phrozen Safe USB for Windows. The best alternative is Kakasoft USB Copy Protection. It's not free, so if you're looking for a free alternative, you could try KakaSoft USBSecurity or Wenovo USB Disks Access Manager.
USB Disks Access Manager is a free Windows utility that allows you to manage access to USB disks. There are three options to choose, access to read and write, read only and does not detect the USB disks.