After site hack,hacker wrote In .htaccess file rewrite engine on for all visitors from serach engine,that they will redirect to another url,instaed of my site.
I removed all malicious lines and remove ftp accounts and changed the password.
But after 2 hours i saw that those malicious lines have beed added to .htaccess again.
Any idea? that how the hacker can do this and how can i stop it?