My Board was HACKED Twice today!!

[tpearl5]

To my surprise at about 5:30 today someone gained access to one of my admin's accounts. They edited my account so I wasn't an admin anymore. I quickly edited the database and made myself an admin again. I changed some things back that the hacker messed with. (my advertising banners, and site name) At this point I had to go to work.

When I got home from work at about 1am my other admin's name was taken, and the same was done as before. He put 'their' banner on the top of the page both times and said "LHK Ownz" or something. I changed everything back again and added some heavier security this time. Also got some IP's of the names. One looks like a proxy and the other is an AOL IP.

This was the banner he displayed on my site:
http://www.angelfire.com/ca6/monkeeyz/lhk.jpg

So how could two seperate accounts be compromised? I'm running v 2.2.8 so all passwords are encrypted. They did not gain access to the backend of the site or the database itself. Just the vB control panel.

:ermm:

Can anyone offer a little insite as to where the security breech could be?