---
title: Operating System security
description: Windows 11 security book - Operating System security chapter.
ms.topic: overview
ms.date: 04/09/2024
---

# Operating System security

:::image type="content" source="images/operating-system-security-cover.png" alt-text="Cover of the operating system security chapter." border="false":::

:::image type="content" source="images/operating-system-on.png" alt-text="Diagram of containing a list of security features." lightbox="images/operating-system.png" border="false":::

Windows 11 is the most secure Windows yet with extensive security measures in the operating system designed to help keep devices, identities, and information safe. These measures include built-in advanced encryption and data protection, robust network system security, and intelligent safeguards against ever-evolving viruses and threats.