The recycle bin will delete the links you have to your data, but the file will still remain on your computer it is just simply placed in a new directory. For PC users the suggested options are FileShredder, FreeRaser & Eraser. For Mac users, the options available are a lot easier and simple. Deleting the files via the secure empty trash and disk utility options will do the job up to the standards of the US department of defence.”]
Source: https://informationsecuritybuzz.com/articles/deletingfilesforever/