If youre erasing sensitive files from a computer, you probably want them gone forever. Here are some simple steps you can take to make sure your files are deleted permanently. Modern solid-state drives (SSDs) and flash memory in mobile phones dont work in the same way. If you have an SSD, deleted files are harder to recover once theyve gone beyond the Recycle Bin or Trash anyway (see the end of this note from Apple)”]
Source: https://gizmodo.com/how-to-safely-delete-private-data-forever-1790297891