I recently refurbished a used and old Acer Aspire E774 laptop as a donation for the Computertruhe e.V.. Of course, this also involves overwriting the hard disk with random data so that old data can no longer be reconstructed. Because “deleted” is not the same as “securely deleted”. I used the shred tool in a Fedora Live environment for secure deletion. However, it works just as well with any other Linux distribution.