February 07, 2012, 5:30 PM — Here's how you can securely delete sensitive data on your Mac OS X Lion computer.
1. Use the following command:
Command+Right Click your trash can.
2. This will pull up a menu above the trash can.
3. Choose "Secure Empty Trash" and the data in your trash can will be deleted securely.
For more, see the original article at the link below.

Secure Empty Trash in Mac OS X Lion | Apple Forums














