So I know how to secure delete files. But at our company, we have a laptop which had many important documents, which now have been deleted, but not in a secure way.
We can't perform a full format of the disk since it would be a complex task to restore everything again. I would like to ask if there's a way to do a "secure clean" of the remaining free space, so those documents couldn't be recovered anymore.
System that is being used is Mac OS X.