windows-itpro-docs/windows/security/operating-system.md

title, description, ms.reviewer, manager, ms.author, ms.prod, ms.mktglfcycl, ms.sitesec, ms.pagetype, author

title	description	ms.reviewer	manager	ms.author	ms.prod	ms.mktglfcycl	ms.sitesec	ms.pagetype	author
Windows operating system security	Securing the operating system includes system security, encryption, network security, and threat protection.		dansimp	deniseb	w10	deploy	library	security	denisebmsft

Windows operating system security

This article provides an overview of operating system security in Windows 11.

Security and privacy depend on an operating system that guards your system and information from the moment it starts up, providing fundamental chip-to-cloud protection. Windows 11 is the most secure Windows yet with extensive security measures designed to help keep you safe. These measures include built-in advanced encryption and data protection, robust network and system security, and intelligent safeguards against ever-evolving threats.

Use the links in the following table to learn more about the operating system security features and capabilities in Windows 11:

Security Measures	Features & Capabilities
System security	Trusted Boot (includes Secure Boot and Measured Boot) Cryptography and certificate management Windows Security app
Encryption and data protection	Encryption and data protection in Windows 11 Encryption BitLocker
Network security	Virtual Private Networks (VPNs) Windows Defender Firewall with advanced security Bluetooth (NEEDED) Domain Name System (DNS) security (NEEDED) Windows Wi-Fi (NEEDED) Transport Layer Security (TLS) (NEEDED)
Protection from viruses and threats	Microsoft Defender Antivirus Attack surface reduction rules Tamper protection Network protection Controlled folder access Exploit protection Integration with Microsoft Defender for Endpoint for additional threat protection