How to detect and prevent web page crash?

Once in the web Trojan, see those files are recently modified, mainly view these new files, (from the FTP can view the file recently modified time.) Then go to the source file to remove the suspicious code related to the page hanging horse type.

If you are not familiar with the website or blog program you are using, it is recommended to delete all files (databases, images, documents, program template themes and other folders can be retained).