Download of PDFProtect 3.2 for Mac was available from the developer's website when we last checked. We cannot confirm if there is a free download of this app available. PDFProtect for Mac lies within Security Tools, more precisely Personal Security.
This app works fine with Mac OS X 10.7 or later. Pdfprotect.dmg is the frequent file name to indicate this app's installer.
According to the results of the Google Safe Browsing check, the developer's site is safe. Despite this, we recommend checking the downloaded files with any free antivirus software. The most popular versions among PDFProtect for Mac users are 3.2 and 2.3. The unique identifier for this program's bundle is com.sybrex.PDFProtect. This Mac app was originally developed by Sybrex Systems.
From the developer:
PDFProtect is a stand-alone, fully automatic software application that can change, add, or remove security level standards in the PDF documents. To change current document encryption settings, simply select the PDF file or folder with PDF files, set new protection options and push the "Start" button. That
You may want to check out more Mac applications, such as Wallet, PasswordWallet or Apimac Secret Folder, which might be similar to PDFProtect.