InformationWeek posted a news story that the Alureon malware has been updated to compromise Microsoft's 64-bit operating systems by defeating driver-signing security.
According to Chandra Prakash, technical fellow at GFI Labs, "the TDL4 rootkit bypasses driver signing policy on 64-bit machines by changing the boot options of Microsoft boot programs that will allow an unsigned driver to load."Alureon Malware Bites Windows 7
The rootkit, which itself arrives as an unsigned driver, also disables debuggers, which "makes reverse engineering this rootkit very difficult," said Prakash.
