hi there m really disappointed when i saw my site showing a message. hacker change my index page and he use his own page in my site . dont know how he do that i use strong password . how he change my site page ? i think he use RTE OR DNN system for hack my site . now i need strong security to prevent hacker from my site . but i dont know how to make secure my site.
if u have any tutorial or something to prevent from hacking please share with me .
thank you in advance