Quote Originally Posted by boxofficehit
I have found that most (at least the ones I saw) solutions delete/wipe the entire hard-disk but I am looking for a way, how I can permanently delete a specific folder and make it non-traceable even if the machine is audited.
nice little utility... Eraser

Security

Q: "Overwriting is the key to ultimate security, isn't it?

A: Wrong. When overwriting data, you are simply trying to fix a security leak that already has happened, the best way to deal with this is to prevent the data from getting written to the disk in the first place - use strong encryption. E4M and GnuPG can get you started, but cannot help you with Windows-related security holes. If you must use Windows, use NT/2000. If you are serious about your security, try Linux, or even OpenBSD.

Q: "I have been using Eraser to overwrite all sensitive data from my drive. Is it really gone now?"

A: It depends on how much money and effort people trying to restore your data are willing to use. Erased data cannot be recovered with any software utility, and even if the hard drive electronics are bypassed and disk platters are examined, recovering data will be extremely difficult, if not impossible. You may want to read more about the common security problems from the help file though.

Q: "I heard that Eraser doesn't wipe the filename when overwriting the rest of the file? Is this true?"

A: No. You can choose whether filenames are cleared or not, and Eraser can even clear names of all previously deleted files (when erasing unused disk space).
http://www.tolvanen.com/eraser/faq.shtml