I'm using wordpress 3.5.1 on my blog. recently it is hacked by anonymous hackers. They didn't effected any of the data on the site. But, they have edited the index.php file. When I inquired for the reasons for the site getting hacked, most of the bloggers said that a site coded with SQL gets hacked easily. Can you tell me the way we can protect a WordPress blog from Hackers. I'd feel happy if you find any faults on my blog which may lead to hacking.