How can I test the security level of my WordPress site?

Hi,

One of my sites using WordPress was recently hacked and since then I started following some security measures to try to make it more secured. Part of the problem as to why it was hacked I think is because I was using the Admin account with full privileges, I have followed some procedures found in the book called Digging Into WordPress and made some adjustments but I was wondering if there is a way to test the security level of you site after these changes made.

1- Is there a way to know how secure is my site?
2- Is there a way to scan my site for malicious scripts?

Thanks a lot