Drop them into the Mac’s Trash can, and then select Empty Trash from the Finder menu, right?
That’s what most Mac users do to delete files and there’s just one thing wrong with that tried and true method. It doesn’t delete files. Important files you’d rather not have any gain access to are still stored on your Mac, easily recovered with a simple utility.
That’s why Apple also includes the Secure Empty Trash option in the Finder’s menu. That method of deleting is slower but writes over the deleted file, Julienne style, making it almost impossible to recover.
Or, you could install FileShredder on your Mac and make it both easier and more secure to delete files.
FileShredder gives you more shredding options, too. Drag and drop files or folders of files to the FileShredder icon in the Dock.
Or, right-click on a folder of files you want to shred, and select Shred from the Menu (or, Secure Shred).
The Dock icon features a counter which indicates the number of files remaining for deletion (there’s an optional shredding sound, too).
FileShredder gives you three secure deletion options. 1 pass is the fastest. 7 DoD-compliant passes (Department of Defense). Or, the famous 35 pass Gutmann deletion (slowest but safest).
Other than Apple’s built-in secure empty Trash option, FileShredder is one of the least expensive ways to get the 35 pass Gutmann deletion method, and it’s certainly easy to use.
I encountered an odd issue with alias files and symbolic links in OS X. For whatever reason, FileShredder deletes the original alias files, too. That’s bad form, so be careful. Otherwise, this is well done and affordable.