Protected Folder is mentioned in best tools to protect your folders with a password
You can download Protected Folder 1.3.0 from our software library for free. The latest installer occupies 3 MB on disk. This PC program works fine with 32-bit versions of Windows XP/Vista/7/8/10.
The following versions: 1.2, 1.1 and 1.0 are the most frequently downloaded ones by the program users. Protected Folder is categorized as Security Tools. This software is an intellectual property of IObit. ProtectedFolder.exe or PfCheckService.exe are the frequent file names to indicate the Protected Folder installer. Our antivirus analysis shows that this download is virus free.
From the developer:
Protected Folder is a folder / file locker which protects user's privacy and important data from theft, loss or leaks.
You may want to check out more software, such as Protect Folder, Easy Folder Guard or Folder Protection, which might be related to Protected Folder.