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“It is a great way to protect against zero-day attacks that make it by antimalware defenses,” Trump said. The reliance of Device Guard on signed policies will block most malware attacks. Applications must have a valid cryptographic signature from specific software vendors - or from Microsoft if the application comes from the Windows Store.Īlthough there have been reports of malware code writers stealing certificates to sign malware, a significant majority of malware is unsigned code. Apps on lockdownĭevice Guard relies on both hardware and software to lock down the machine so that it can run only trusted applications. Microsoft published tehnical guides for Device Guard and Credential Guard on TechNet last week. Using hardware-based virtualization to extend whitelisting and protecting credentials was a “brilliant move” by Microsoft, said Chester Wisniewski, senior security strategist for Sophos Canada, an antivirus company.

Microsoft isolates critical Windows services in the virtual machine to block attackers from tampering with the kernel and other sensitive processes. The new features rely on the same hypervisor technology already used by Hyper-V. Credential Guard protects corporate identities by isolating them in a hardware-based virtual environment. “Clearly, Microsoft thought a lot about the kind of attacks taking place against enterprise customers and is moving security forward by leaps and bounds,” said Ian Trump, a security lead at LogicNow.ĭevice Guard relies on Windows 10’s virtualization-based security to allow only trusted applications to run on devices. Device Guard and Credential Guard are intended for business systems and are available only in Windows 10 Enterprise and Windows 10 Education.

But Device Guard and Credential Guard are the two standout security features of Windows 10 - they protect the core kernel from malware and prevent attackers from remotely taking control of the machine. So far the buzz has mainly been about Windows Hello, which supports face and fingerprint recognition. Microsoft added two game-changing security features for enterprise users in Windows 10, but until recently, the company has been relatively quiet about them.