Immunix is a discontinued commercial operating system that provided host-based application security solutions.
The last release of Immunix's Linux distribution was version 7.3 on November 27, 2003.
Immunix, Inc. was the creator of AppArmor, an application security system.
[1] AppArmor was one of Novell's primary interests, and as a result, it was adopted by the company and renamed Novell AppArmor powered by Immunix.
In September 2007, Novell laid off the AppArmor team.