webdudek - 10:00 am on Jul 31, 2008 (gmt 0)
I use an External Vulnerability Scanner on my site and on my customers sites.
Every day they scan all my sites, There is no need to install anything on the site and all the reports are kept on my account in their system.
I think that this is exactly like anti virus software. Everybody has one on their laptop, right? so why aren't you protecting your website?
Google up "external vulnerability scanner" there are many companies that do this kind of service.