I wrote and received this answer:
Le 30/06/2017 à 15:29, charlie a écrit :
For two days, the site is attacked with spam messages. I have deleted many.
What can you do?
I’ve alerted Evgeny last week (or the week before) about the attacks. He
is working on a moderation script, the difficulty is to find a pattern
in the Korean content. We now have the help of the Korean community so I
hope it will be solved soon.
I usually delete spam once a day, but since this morning, I’m taking
care of it every two hours and will continue until it’s solved.
Sorry for the inconvenience.
Sophie Gautier [hidden email]
The Document Foundation