The same can be said to some extent for your hard drive. Unless it is overwritten, “deleted” files are still there. And even then, with the right software, some or all of it may be able to be retrieved.
There are a lot of people serving time in prison who thought that when you delete a file, internet search, etc., off your computer it was gone forever.
Fortunately, I'm a nobody so my hard drive wouldn't be worth the trouble. :-)
Early learners of marking understand the fulfillment of a HD.
Nothing major on my part but a script to get someone to stop using government computers for personal business worked quite well. The erasure of said script was tedious.