In several white papers looking at the operating system, Symantec boffins concluded that for now the operating system can stop any malware thrown against it.
Kernel-level rootkits simply couldn't install without getting permission through the user who has to push a lot of allow buttons before it will install.
However, they warned that the operating system was not totally secure and hackers will still work out a way of getting around it.
The white paper says that Vista is not a secure operating system, just a lot more secure than its previous incarnations.
Embarrassingly for Vole, Symantec found that a small percentage of core Vista components hadn't been compiled with all of the available protective technology.
It also says that only the 64-bit version of the software can protect its kernel integrity.
A summary of the report can be found at PC Magazine, here. ยต