NSA thinks Mac OS X 10.3 is secure

The National Security Agency releases regularly guides on operating systems security. Paranox talks about the guide dealing with Panther:

I read through the guide, and, to summarize, the default configuration of 10.3 client (i.e. not Server) is safe and securing it more could prevent the mac from communicating with other computers and make its administration more complicated.
It is however interesting to find a source of free documents on issues of security.
But pay attention to fact that it's not intended for newbies, some knowledge is required in order to understand and select the right strategy to use, and the one to avoid, depending on your needs.

http://www.nsa.gov/snac/
Here is some info that should sounds pleasant to the ones stressed by the news of the apparition of a Trojan on OSX, relayed by plenty of medias. Though it is potentially very dangerous, its propagation mode is now extremely complicated. You first have to download it, then accept its installation with an admin password.