Hello,
(ANS) Absolutely NOT!! thats a complete myth, why? because windows vista is Microsoft's latest version of windows OS it is just the latest target or challenge for the virus writers & hackers to attack and so that makes it more vulnerable to infection than previous windows versions.
**Past versions of windows are too some degree less vulnerable now, well relatively speaking.
**In fact Vista is just as prone to past viruses, worms, trojens horse infections etc, and can still be infected.
**YES! Microsoft have done quite a good job at hardening internal windows defenses in vista but actually these techniques have been standard practice in Linux & Apple for ages. i.e. you cannot reinvent the wheel so too speak.
**Vista is still in its infancy and so still has many faults, floors, holes & vulnerabilities & glitches which have not been found or plugged. This is exactly what MS service packs (at there best) are designed to fix, in fact they are also sometimes called hot-fixes too.
**Just because you have vista shouldn't lull you into a false sense of security, you still need to run anti virus software & anti spyware or anti malware scanners.
Kind Regards Ivan
(computer veteran, MCSE trained).