My service provider suspended the site since it was apparently being used for hacking into the server. They suspect a vulnerability in the version of phpBB I was running.

I’ve shut the forum down until I can find the time to upgrade it to the latest version. It’s a reminder to keep abreast of the versions of software that you might be running on your site and to keep them up to date.

And to the loser(s) that did that: get a life!