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Microsoft admits legitimate threat to Vista
Wednesday, August 9th, 2006
Before it’s even released, Windows Vista is under attack. After security researcher Joanna 
Rutkowska demonstrated how it’s possible to circumvent security in Microsoft’s Vista beta software and install a rootkit called Blue Pill, Microsoft said it intends to find ways to stop both potential threats before Vista ships.
At the Black Hat conference, Rutkowska, security researcher at Singapore-based firm COSEINC, showed that she found a way to bypass the Vista integrity-checking process for loading unsigned code into the Vista kernel. Then she presented Blue Pill, a rootkit she created based on AMD (Advanced Micro Devices) Secure Virtual Machine, Pacifica.
On bypassing the signature-checking mechanism for device drivers that Microsoft is including in Vista to prevent loading of malware or unauthorised software, Rutkowska said, "The fact that this mechanism was bypassed does not mean that Vista is completely insecure. It’s just not as secure as advertised." She added: "It’s very difficult to implement a 100 percent efficient kernel protection in any general-purpose operating system." Microsoft admits ‘legitimate threat’ to Vista News - PC Advisor
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