A good reminder to run your webserver with only the privileges it needs, including read/write permissions on the filesystem outside www and shell execution of commands on the system.
Also not a bad idea to have some kind of file compare against a "known good" folder of your site(s) to determine if any files have been modified or added, such as webshells.
Also not a bad idea to have some kind of file compare against a "known good" folder of your site(s) to determine if any files have been modified or added, such as webshells.