For those who didn’t see it: you didn’t miss anything.
For those who did: I appologize
For those who encountered the same problem: here you can find some remedy.
Good thing is: Badi doesn’t destroy your content. He (or she for that matter) is only messing with the admin’s site.
Lucky enough you can easily access your admin panel (< site URL>/wp-admin) and restore the damage.
If you know what to do, your site is up again in 5 minutes.
Success!
(Photo: Baid Assad)