Ensure total security for your sensitive info by overwriting data before deleting it
FromShred:Shred will allow you to free space easily. All you need to do in order to take its capabilities for a spin is drag and drop any file or folder, with the app being able to work in batch mode as well.
Get your privacy back from spies and thieves.
Lock and secure your files.
Protect files across the Dropbox and Google Drive clouds and on linked mobile devices.