Here is the list of all security vulnerabilites dealing with AnalogX Simple Server...
some are pretty old...

http://online.securityfocus.com/bid/5006
http://online.securityfocus.com/bid/1349
http://online.securityfocus.com/bid/1076
http://online.securityfocus.com/bid/906

I actually used to use SimpleServer before I got into PHP and active content, which it doesn't support all that well. I actually really liked it cause the vulnerabilities were kept to a minimum. BTW, the latest vulnerabilites are just DOS vulnerabilites, so they can't really "hack" you...unless you have other services, or you don't run a firewalling program or hardware...

Regards,
Wizeman