While helping Windows Enterprise customers deploy and realize the benefits of Windows 10, I’ve observed there’s still a lot of confusion regarding the security features of the operating system. By Priyanka_Pillai @Microsoft.
Device Guard is a group of key features, designed to harden a computer system against malware. Its focus is preventing malicious code from running by ensuring only known good code can run. Credential Guard is a specific feature that is not part of Device Guard that aims to isolate and harden key system and user secrets against compromise, helping to minimize the impact and breadth of a Pass the Hash style attack in the event that malicious code is already running via a local or network based vector.
Device Guard consists of three primary components:
- Configurable Code Integrity (CCI) – Ensures that only trusted code runs from the boot loader onwards.
- VSM Protected Code Integrity – Moves Kernel Mode Code Integrity (KMCI) and Hypervisor Code Integrity (HVCI) components into VSM, hardening them from attack.
- Platform and UEFI Secure Boot – Ensuring the boot binaries and UEFI firmware are signed and have not been tampered with.
Although separate from Device Guard, the Credential Guard feature also leverages Virtual Secure Mode by placing an isolated version of the Local Security Authority (LSA – or LSASS) under it’s protection. You will also find screen grabs explaining how to set up described configurations. Good read![Read More]