how can i solve the issue, kindly help?
Error 403 Access Denied/Forbidden
2nd: just now we hardly recovered our website, due to some (maybe...) virus attack....so tell me the best security settings and/or file attributes to apply on...
kindly help !
check your .htaccess for permission restrictions on your admin folder it looks like a deny rule is affecting it.
Edit: If it's not in your .htaccess then you might want to check your folder permissions as well.
for file permissions in general here is a good starting point:
Also getting a FIM(file integrity monitor) and decent AV / Malware scanner is a good idea. A FIM will give you a heads up when things have been changed and you can check and fix any changes. As for AV I run with sophos but thats only because its default on my hosting.
Is you alone have access to your FTP and cpanel? if not, please check your local.xml inside root/app/etc/local.xml, and make sure the admin url is not changed into some thing else.
Or, did you try to access with yourdomain.com/index.php/admin