Unfortunately, there’s a bigger problem with modern drives. You may “securely delete” a financial document, but older versions of it may still be stored on disk as part of your operating system’s previous versions feature or other caches.īut, let’s say you can solve that problem. The operating system may have made backup copies of this file in a number of different places. The first problem with these tools is that they’ll only attempt to overwrite the file in its current location. Older versions of Mac OS X offered “Secure Empty Trash”, and Mac OS X still offers an included “ srm” command for securely deleting files. Microsoft offers an “ sdelete” command for download as part of the SysInternals suite of utilities. The popular CCleaner utility contains a “secure delete” option.
Tools like this are available all over the place. When you securely delete a file, the tool attempts to overwrite only that file’s current location with junk data. But, when you wipe a drive, the enter drive is overwritten with junk data.
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