Solved all of the post is gone, but existing in database

Hello

All of the post is gone. How it possible?
[edit]
I have checked the database and in there the post are exist, but on the front end is no posts
http://norwegia1 .pl /forum.html
yestarday night was everything ok. I havent do nothing.
please help

Database collation check: The collation of your table fields are correct

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Can someone have deleted all the topics? Check in backend the trash.

rich wrote: Can someone have deleted all the topics? Check in backend the trash.

I found all deleted post in the thash , ufffff .....

But who can delete it? I have no Idea

it can be attack ?

it can be attack ?

Yes, it's possible. Example: A global moderator can delete all. Maybe a moderator has a weak password and it is hacked? All moderators and admins should change the passord.
Possible are also wrong user rights. Check as a normal registered user whether yo can delete.

For the future:
Go in backend to Kunena configuration -> Users and select "Define if you want to log action or moderation = Yes". Then you can see the next time, which user anything has deleted.

thx