I can also confirm receiving the email (but I really need to tidy up my mail filters, I actually read about the hack here first).

Nice email, one improvement would be to host the wiki behind a proper https-site -- especially since we already know the attack appears somewhat sophisticated, and that the attackers gained control over servers on the Hetzner network. Now, the faq doesn't contain anything obviously bad (email your credit card info to... etc) -- but one small thing that could be improved.

Other than that I appreciate how Hetzner have handled this so far.