Modern CMS platforms have much more robust security than standalone scripts from a decade ago. Conclusion
Gaining access to the website’s backend database. intitle liveapplet inurl lvappl and 1 guestbook phprar full
: This likely refers to a compressed file (RAR) containing PHP scripts. Searching for this suggests an attempt to find the source code or backup files of the guestbook application. Modern CMS platforms have much more robust security