Immunix

"Immunix" is a family of tools designed to enhance system
integrity by hardening system components and platforms against security attacks.
Immunix secures a Linux OS and applications. Immunix works by hardening existing
software components and platforms so that attempts to exploit security vulnerabilities
will fail safe, i.e. the compromised process halts instead of giving control to the attacker,
and then is restarted. The software components are effectively "laminated" with
Immunix technologies to harden them against attack.
Customers who are interested in a tried, reliable OS with an emphasis
on security or simply in a security enhanced Unix platform might want to consider Immunix.