SecureRemove

SecureRemove is an app that completely wipes all the data and erases your files permanently. When you normally delete files or empty the Trash can, your files are not really deleted.

The system just marks this files as 'erased' - therefore, they will be overwritten some day when the system needs more disk space, but in the meantime these files are still recoverable with a simple or advanced undelete tool. SecureRemove makes sure that the deleted files are definitely erased.