You may have more serious issues. Your site is loading a script that links to a file at “howdenskitchens.org/adv.php” which contains and active exploit. That domain links to the same exploit file on another compromised domain, and so-on.
It’s an “Exploit Blackhole” Exploit kit. You can read about the threat on Google. Here is a short synopsis from Symantec.
Bottom line, you have probably been hacked, and there is probably a script – or an iframe – in your file(s) that contains a link to the exploit.
Your version of wordpress is “WordPress 3.0.4”.
I’m off to hose down my hard drive… 🙂
@esmi I worked your way and was able to remove the warning. I am not getting the warning about header when I open my blog ityaadi.org.
But as @clayton says, I may have more serious issues. My blog’s dashboard is still unaccessible. When I tried to open it on Google Chrome today, it gave the following warning.
ityaadi.org contains content from taste.zerofractal.biz, a site known to distribute malware. Your computer might catch a virus if you visit this site.
I saw that there was this script with the link howdenskitchens.org/adv.php in my index.php file. When I opened this website, it was again showing the same message over there.
So I removed it. And my blog stopped showing the error message.
If it has been hacked, what do I do now.
I am really concerned now. Please help.
Login to FTP & You will find the script as shown top of your INDEX.PHP (Main Directory not your theme directory)
Please remove this code and you will find the same code again in your wp-admin/index.php. Please remove it and that’s it. Save your files and login to your wordpress theme with old password and change the password once after you logged in. Cheers ! Surya R Praveen
thank you so much ssuryar for posting this, my index.php had been hacked but the date didn’t indicate that the file had been changed
