Microsoft added two game-changing security features for enterprise users in Windows 10, but until recently, the company has been relatively quiet about them.So far the buzz has mainly been about Windows Hello, which supports face and fingerprint recognition. 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. Device Guard and Credential Guard are intended for business systems and are available only in Windows 10 Enterprise and Windows 10 Education.