With enhancements from third parties such as Argus and Bull, AIX can also be beefed up to Common Criteria 2.0 B1 certification. These are the kinds of systems that attackers ignore in favor of easier prey.
Don't let the L for Linux confuse you; this will be IBM's beefiest AIX ever. Folding Linux support into AIX, a sign of serious commitment to Linux, does not compromise IBM's investment in AIX. If anything, IBM is going to be walking the walk as well as talking the talk. Although new installations will be an obvious place to deploy AIX 5L, we predict that customers will want the Linux features and other enhancements so much that they will upgrade with little coaxing.