website/admin page is not accessible, kindly help

[Qayyom]

Dear Experts

how can i solve the issue, kindly help?

zat-world.com/admin/

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 !

[passmarketing]

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:
http://devdocs.magento.com/guides/m1x/install/installer-privileges_after.html

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.

FIM: https://www.tripwire.org/

[VLThlan]

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

Regards

VL