Note that if you are e-mailing files, most e-mail providers have a limit on attachment sizes. Once you have your files in the generated folder, you can now go on to the business of compressing and password protecting the files. Drag and drop your sensitive files into the new folder.Rename the folder, preferably something without spaces as this will make terminal commands simpler for you.Option-click the Finder window and create a New Folder. So if you have multiple files for compressing and protecting, you can organize them into a single folder using Finder. Since we'll be using the terminal application that is native on macOS, you'll want to make the compression of your files as simple as possible to avoid long strings of commands. If there was ever a time to vigilant with securing your private data, this would the moment! Here's how you can create a compressed zip file with your sensitive data and password protect it on natively macOS. Tax time is here and many of us will be sharing sensitive information from our financial institutions with our accountants.