A wordpress directory site I have been building, [login to view URL], has been hacked and now displays an image containing arabic writing on it with streaming music. This is a wordpress multisite install, and all other sites on the install are fine. The wordpress core files as well as the theme files (re-installed) are clean. All thats needed is identifying which files have been hacked and how to protect in the future against this attack. All content can be deleted, so the job shouldn't take more than an hour.