If you ever want to secure a file containing your precious data, you may consider encrypting it with a freeware. Encrypting a file means that you make a file secure by making it unreadable until you decrypt it with a password or some other ways of decryption.
If you are looking for one freeware to do that, Omziff is one of the best choice.
As you are reading the features above, you will notice that Omziff is not just a file encryption utility. You will find multiple usage for Omziff. Moreover, Omziff doesn't need to be installed. Unzip it and walla, its ready to serve.
Download Omziff from http://www.xtort.net/