If you have files that are sensitive for you, the best way to get rid of them is by using Activ Kill Disk. This is a program that allows you to destroy every data from your hard disk without a chance to recover it. It is great for Linux and also for Windows and comes with some interesting features. You can erase your files almost instantly, you can obtain an erasing certificate as a pdf and you can benefit from more than 20 security standards.
The program can be downloaded for free and it is very easy to use, giving you the flexibility you need in using sensible files.
