I was using Turbo Tax Home and Business 2007 and wanted to send the final PDF to a tax consultant for some review. I wanted to create an encrypted PDF from Turbo Tax; I couldn’t find a way to do this. Then I figured that an alternative would be to “ZIP” the unencrypted PDF, and add a password to the ZIP file. This worked, but I had to work around an unexpected hurdle in Yahoo Mail related to encrypted attachments.