i am in the process of erasing emails from our server and local pcs, for legal reasons. i need a good tool for zeroization to permanently remove all traces of this data off the hard disk, while not affecting any aspect of the operating system.
i heard of a cipher.exe application that comes with the newer windows? does it work?, any proprietary software recommendations are also warmly welcome.
Correct me if i am wrong, but i thought i heard something like you have to run these zeroization processes several cycles to fully erase all traces. is this correct??