Hi everyone, while googling the topic i found this " 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. " The full article is here Will upgrading to 64 Bit Windows make you More Secure?
But i also think digitaly signed driver
are not that hard to make for some " proffesional " malware author. malware writers currently tend to write their code for systems which enjoy widespread usage (such as 32bit Windows versions). More potential victims that way but its only a matter of time i guess.