I think there's a brazillian competition going on for hacked websites, because
www.seattlewirelesss.net has been defaced twice now. Suggestion for the owner of the website, make sure he didnt leave any trojans on your site, because I think it's like 85% of the time a hacker will leave a backdoor open so they can go back into the site incase the owner tries to take it back and deface it again. You might need to reinstall your OS if it keeps happening over and over because that means he made a new backdoor and put it on your computer.
I'm very sure PlanetJay is good on security though so I'm pretty sure Byoac is safe, but for all those other's here that are hosting their own servers, remember to look for the newest updates of whatever server program your running, and try to find an exploit of your own server, and if you can find one, usually the info will have a fix of how to get rid of the exploit. Just be careful and make sure to check modification dates if you think you've been hacked, a lot of times a sloppy hacker won't use a full extensive root kit and will miss certain modification dates, making it obvious what he did.