Windows Security & Defender Support
Protect your Windows computer with practical information about malware protection, security settings, system updates, account safety, and Windows Defender features.
Security Protection
Learn how Windows security features can help protect your computer from malware, suspicious applications and other common digital threats.
Stay Safer With Windows Security
Windows includes built-in security technologies designed to help protect your device, files and online activity. Windows Defender Antivirus is part of Microsoft Defender and works with other Windows security features to provide protection against common threats.
- Protection against common malware threats
- Security monitoring and threat detection
- Firewall and network protection information
- Account and device security guidance
- Windows Update security recommendations
- Safe browsing and download practices
Security Reminder
Keep Windows and your applications updated. Avoid downloading unknown programs, opening suspicious attachments, or providing passwords and verification codes to unexpected callers.
Security Support Topics
Explore common Windows security topics and learn practical ways to improve your device's security.
Virus & Malware Protection
Learn about malware detection, scanning options, suspicious files, potentially unwanted applications and basic steps for keeping your Windows device protected.
Firewall Protection
Understand how Windows Firewall helps control network connections and why keeping firewall protection enabled can be an important part of a secure computer.
Windows Updates
Regular operating-system updates can provide security fixes, reliability improvements and new protection features.
Account Security
Protect your accounts with strong passwords, multi-factor authentication and careful handling of security notifications.
Online Safety
Learn how to recognize suspicious websites, phishing messages, fake alerts and potentially dangerous downloads.
Device Protection
Review Windows security settings and learn good practices for protecting personal files and information stored on your PC.
Important Windows Security Features
Windows provides several security layers that work together to help reduce common security risks.
Microsoft Defender Antivirus
Built-in antivirus capabilities can scan files and applications and help identify malicious software.
Windows Firewall
Firewall controls help manage network traffic and reduce exposure to unwanted network connections.
SmartScreen
SmartScreen technologies can provide warnings about certain potentially dangerous websites, downloads and applications.
Device Security
Windows device-security features can help protect hardware, firmware and system components on supported devices.
Simple Security Tips
1. Install Updates
Keep Windows, browsers and important applications updated with current security releases.
2. Avoid Suspicious Links
Do not click unexpected links in emails, messages or pop-ups, especially when they request passwords or payment information.
3. Protect Your Passwords
Use strong, unique passwords and enable multi-factor authentication whenever available.
Frequently Asked Questions
What is Windows Defender?
Microsoft Defender Antivirus is Microsoft's built-in antivirus protection for supported Windows systems. It helps detect and respond to various malware threats.
Should I keep antivirus protection enabled?
In general, maintaining active security protection is recommended unless you have a specific, trusted reason to change the setting.
Why are Windows updates important?
Updates can include security fixes that address vulnerabilities, along with stability and performance improveme
Need Windows Security Information?
For independent assistance and general Windows security guidance, contact us using the number below.
📞 1234567890Toll-Free Support: 1234567890
This is an independent support website and is not affiliated with, sponsored by, or endorsed by Microsoft Corporation. Microsoft, Windows and Microsoft Defender are trademarks of Microsoft Corporation.