64 bit Windows from a security standpoint is better it is imune from rootkit infection
Source ? ?
I've never seen a referenced article to this.
No more rootkits?
There’s more good news: the current rootkits that have been written for 32 bit systems, including the infamous Sony music CD rootkit, don’t work in the 64 bit OS. That’s because when updating the kernel code for the 64 bit version, Microsoft programmers took the opportunity to include a “patch guard” – code that is part of the kernel makes it impossible to install a patch in a running kernel (which kernel mode rootkits do on 32 bit systems).
Likewise, processor vendors had an opportunity, in making the new 64 bit processors, to include security mechanisms. Both AMD and Intel include code in their 64 bit products to prevent the exploitation of buffer overflow and buffer underrun conditions.
Will upgrading to 64 Bit Windows make you More Secure?
We expect that malware authors will continue to seek ways to fly under the radar, just as we will continue to evolve our protection technologies to stay one step ahead of the bad guys. Regardless, here are a couple tips to avoid getting hit by a rootkit:
Keep real-time protection enabled
while running up-to-date antimalware software is essential, it does little good if you turn off the real-time protection feature. If you lower your defenses and a rootkit does get through, finding and removing it can be a tricky endeavor. Keep your defenses up and you're much less likely to have headaches down the road.
Run 64-bit Windows
for the time being, it appears that currently, users running 64 bit Windows are less likely to be compromised by rootkits. While the threat landscape is constantly evolving, for now you can breathe a lot easier if you're running 64-bit Windows. If you have a choice, go with 64-bit.
Microsoft Malware Protection Center : Some Observations on Rootkits
