Security improvements

[avispa987]

Hello ispcp community, im Facundo, from argentina, i started using ispcp again and i really love the changes!, really intuitive, easy to install, zero complaints!
I just want to know if the security is good in default installation,
im using Debian 5 (lenny) latest version, with ispcp Omega 1.0.5 stable, I have a little 128mb vps, because its just for few personal webs, But some friends of mine asked for reseller accounts, i want to give them some accounts, but the thing is i dont know how secure the installation is.
If anybody can tellme no worry, or a suggestion to make better the security, i will be thankfull

Cordially,
Facundo Caselles