Have you ever erased something from your computer, but were then concerned with whether the information would still be accessible? One situation I can think of is when giving away or selling a computer/hard drive, and the fear that the new owner may try to recover the information that you left behind on the drive.
Utilities like WipeFile are great in these scenarios. Not only is it free, but it’s also portable which means you don’t have to install it if there are just a few files you want to erase. The best part about WipeFile is that you can list out all the directories on your drive that you want to remove, and you can even go as far as to restrict it to certain files based upon name/extension.
After you’ve selected all of the paths you can move on to picking one of the 14 different methods that can be used to securely eliminate the files. One of those methods was designed by Peter Gutmann, which consists of 35 passes that tries to make it economically infeasible for anyone to recover the data that was on the drive. Obviously the more passes the application has to make the longer it will take, but that’s the price we pay for security.
WipeFile Homepage (Windows only; Freeware)