Solved Website hacked... how do i do a mass deletion of all their posts?

As a [post-apocalyptic] comment on this episode, in the event that only one particular user has managed to infiltrate a forum and has posted several messages that you and your community object to, there is a much easier way to remove the user and their messages with four mouse-clicks.

We always use this technique at K.org.

As a global moderator or as a site administrator, go to the offending user's Kunena user profile. If you are using Community Builder for your user profiles then you cannot do this quite so easily from the frontend but, if you are using Kunena user profiles then it's a single mouse-click on the offender's avatar/username link and you're already there.

On the user's Kunena profile:

1. Select the New Ban tab.
2. Select Ban From = Site.
3. Check the box Delete all posts.
4. Press the New Ban button at the bottom of the page.

If you want to add more information as an explanation of why you banned the user, that's entirely up to you. Selecting the items as I have listed them above are the basic things that you need to do to get rid of troublemakers and the rubbish they leave littered behind on your site.

However ... if you delete users then you will have more trouble than Flash Gordon trying to extricate yourself from the mess this leaves. We do not delete users. Banning users is much more effective. Banning users stops these people returning and registering themselves with the same username they'd used before; and more! Banning is good!