It's different on magnetic media. A secure delete routine throws enough noise at it to clean up
the edges too, which is why they run so many passes. What you're talking about is roughly
analogous to having never tried a secure wipe at all, which on vinyl would be like scraping out
the grooves so that even the crosstalk is gone.

At that point maybe Ensign Kim could recover something with a tricorder and some Borg
technology but probably not, since he's out of town and the Borg stuff is really expensive.