Delete does not mean erase. "Previously deleted" files can be easily recovered. Use FastWiper to prevent file recovery and remove sensitive data such as tax returns, financial statements, passwords, health records, email and all evidence of your online activity.
This software is a shareware. You will be able to download and test FastWiper during a certain period of time, then, if it does what you need, you will have to acquire the full version from FastWiper publisher. The FastWiper 1.1 free trial version contains an installer and an uninstaller, and has a size of 727 Kilobytes.
For additional information and support request, please contact directly FastWiper publisher.

FastWiper Screenshot