35,000 Websites Popular Forum Software Hacked

Some 35,000 sites that use vBulletin, a popular website forum package, were hacked recently by taking advantage of the presence of files left over from the program's installation process, according to security researcher Brian Krebs. The hack by itself is fairly standard, but the way in which it was carried out shows how search engines like Google can unwittingly become a party to such hacking.