As cyber threats grow more sophisticated, operating system security is no longer optional, it’s essential. Windows 11 introduces a range of built-in security features that go far beyond what Windows 10 offered. For businesses, these enhancements can significantly reduce risk, improve compliance, and simplify IT management.

Here’s a breakdown of the Windows 11 security features that truly matter to your organisation.

1. TPM 2.0 and Secure Boot: Hardware-level protection

Windows 11 requires Trusted Platform Module (TPM) 2.0 and secure boot as standard. These features:

• Protect against firmware attacks
• Ensure only trusted software loads during startup
• Enable advanced encryption and credential protection

This hardware-based security foundation is a major step forward in defending against modern threats like ransomware and rootkits.

2. Windows Hello for business

Say goodbye to passwords. Windows Hello uses facial recognition, fingerprint scanning, or PINs to authenticate users securely and quickly.

Benefits for businesses:

• Reduces phishing risk
• Speeds up login times
• Integrates with Azure Active Directory and Microsoft 365

3. Virtualisation-based security (VBS) and hypervisor-protected code integrity (HVCI)

These advanced features isolate critical parts of the operating system from the rest of the machine, making it much harder for malware to gain control.

• VBS creates a secure memory region for sensitive processes
• HVCI ensures only trusted code runs in kernel mode

Together, they provide enterprise-grade protection, especially valuable in regulated industries.

4. Microsoft Defender SmartScreen and Application Control

Windows 11 includes SmartScreen to block untrusted websites and downloads, and Application Control to prevent unauthorised apps from running.

This helps:

• Stop malware before it installs
• Enforce app usage policies
• Reduce shadow IT risks

5. BitLocker drive encryption

BitLocker is now easier to deploy and manage in Windows 11. It encrypts your entire drive, protecting data even if a device is lost or stolen.

• Works with TPM for seamless encryption
• Supports remote wipe and recovery
• Essential for mobile and hybrid workforces

6. Enhanced phishing protection in Microsoft Defender

Windows 11 integrates phishing protection directly into the OS, warning users when they enter credentials into known malicious sites, even in apps like Notepad or Word.

This is especially useful for:

• Preventing credential theft
• Protecting against business email compromise (BEC)
• Training users through real-time alerts

7. Seamless integration with Microsoft 365 security tools

Windows 11 works hand-in-hand with Microsoft 365 Defender, Intune, and Azure AD to provide:

• Centralised device management
• Conditional access policies
• Endpoint detection and response (EDR)

This unified ecosystem simplifies security for IT teams and strengthens your overall posture.

Windows 11 isn’t just a visual upgrade, it’s a security-first platform built for the modern workplace. From hardware-based protections to intelligent phishing detection, these features help businesses stay ahead of evolving threats.

If your organisation is still on Windows 10, now is the time to assess your risk and plan your move. The security benefits alone make the upgrade a smart investment.