Is this some sort of DB attack?

[JonB93]

A little bit ago I think I was hit with a DB attack of some sort? I got over 400 emails with this:

Database error in vBulletin 3.8.1:

Invalid SQL:

                        INSERT INTO humanverify
                                (hash, answer, dateline)
                        VALUES
                                ('bb0c8826ebe1c8dad29bf6b335604597', '1', 1312816129);

MySQL Error   : Incorrect key file for table './jbcb/humanverify.MYI'; try to repair it
Error Number  : 126
Request Date  : Monday, August 8th 2011 @ 11:08:49 AM
Error Date    : Monday, August 8th 2011 @ 11:08:49 AM

I ran a repair/optimize and some of the tables were corrupt and locked, including the humanverify table. Then I went into phpmyadmin and had over 500 entries in the humanverify table. That can't be normal right? I deleted them all, then ran a repair/optimize again and everything checked out OK. I brought up site up and monitored it.

It's now happening again, and everytime I run on query on that table, it's filling up with entries. What's going? Am I being attacked?

Sorry MODS! Please move this to the 3.8 section

[Hawk2]

do you have alot of guests on your forums

[JonB93]

only 32... so nothing abnormally high

[borbole]

What were those entries? Can you post a few of them?

[JonB93]

here's a screenshot...if u look at the date/timestamp, all the entries are very close. Also you can see I'm up to 90 something... they increase by like 5-10 every minute or so...




What's more weird is on the who's online list, no one is even registering!!

[Hawk2]

maybe just bots checking your site

[Trevor Hannant]

MySQL Error : Incorrect key file for table './jbcb/humanverify.MYI'; try to repair it

This is a database issue. If repairing this table doesn't fix this, you will need to speak to your host.