Before you even start up, Windows11 is on guard. Cutting-edge hardware and innovative software work in tandem to help keep your identity, information, and apps secure.*
Malware has met its match
Windows11 comes with cutting-edge features that help protect you from malware.While staying vigilant is the most important protective measure you can take, security features in Windows 11 also help provide real-time detection and protection.
What is malware?
What is malware?
Any software created to intentionally harm a computer can be considered malware. Common types include viruses, trojans, spyware, and ransomware. How they operate can vary from stealing your passwords to holding your files for ransom until you pay.
Microsoft Defender Antivirus
A next-generation protection solution that comes with Windows11, Microsoft Defender Antivirus is real-time, always-on antivirus protection.
Microsoft Defender SmartScreen
If a website, application, or download is potentially malicious and could harm your computer, SmartScreen will warn you.
Microsoft Firewall
Microsoft Firewall can help prevent hackers or malicious software from gaining access to your PC through the internet or a network.
Bluetooth protection
Whether you’re using Bluetooth headsets, mice, keyboards, or other wireless accessories, you can feel confident that it’s a secure connection.
Secure Wi-Fi
Windows Wi-Fi supports industry standardized authentication and encryption methods, to help keep you safe no matter where you connect—even on public networks.
Virtual private networks (VPN)
A VPN, or virtual private network, is a secure tunnel connecting your PC and the internet. A variety of VPN apps are available in the Microsoft Store.
Innovative identity protection
Windows11 PCs protect your identity by using advanced security methods for logging into your device.There are over 920 password attacks every second. That’s why we’ve innovated solutions that redefine login credentials. Windows11 validates your credentials using either a device-specific PIN code, fingerprint or facial recognition1—protecting you from phishing and other network attacks, including password leaks.
What is phishing?
What is phishing?
There are dozens of types of password attacks. One of the most common is phishing, a cybercrime where malicious actors disguise themselves as legitimate institutions or people you trust in order to steal your passwords and access your data. To combat this, look out for emails from unknown, unusual, or misspelled senders. Hover your cursor over links in emails to check if a different URL is embedded. Avoid using pirated software.
Windows Hello
Windows Hello is a more personal, more secure way to get instant access to your Windows11 devices using a PIN, facial recognition, or fingerprint.1
Wake on approach and lock on leave
If your PC has a presence detection sensor, Windows11 can automatically lock your device by using facial recognition when you walk away. It can also unlock your device and sign you back in with Windows Hello when you return.
Microsoft Authenticator App
The Microsoft Authenticator app provides easy, secure sign-ins for all your online accounts using multifactor authentication, passwordless phone sign-in, or password autofill.
Find My Device
When enabled, Find My Device can be used to help recover lost or stolen hardware, reducing security threats that rely on physical access to devices.
Privacy Dashboard
The Privacy Dashboard is a simple view where you can manage data, export reports, and view which apps are using your camera, mic, and even your location.
Strong and secure apps
Cybercriminals can gain access to your data by hacking your applications.Windows11 protects your most valuable information in multiple ways. In addition to the built-in protections that help keep you from downloading suspicious or potentially unwanted apps, Windows11 also comes with a suite of Microsoft-developed apps that help keep you protected, both online and off.
What is a potentially unwanted app (PUA)?
What is a potentially unwanted app (PUA)?
Potentially unwanted applications (PUA) are a category of software that can cause your machine to run slowly, display unexpected ads, or at worst, install other software that might be even more harmful or otherwise unwelcome. While not considered a virus or malware, PUA might perform actions that adversely affect performance.
Microsoft Edge
In addition to blocking ad trackers and defending against malware, Microsoft Edge can monitor2 the web to check if your passwords have been compromised. It’s the most secure browser on Windows11.
Get Microsoft Edge
OneDrive
With OneDrive PC Backup on Windows11, documents, and pictures folders are automatically backed up, giving them a second life—and giving you extra peace of mind.3
Discover OneDrive
Microsoft Family Safety
Microsoft Family Safety4 helps develop healthy digital habits with transparency into your family’s activities. Use content filtering settings to block inappropriate apps and games, and limit browsing to kid-friendly websites using Microsoft Edge on Windows, Xbox, and Android.
Explore Microsoft Family Safety
Smart App Control
Smart App Control takes the stress out of downloading and installing apps by only allowing apps predicted to be safe to run on your Windows PC. This security feature is available only on the latest version of Windows11 in the United States and Western Europe.5
Explore Smart App Control
Microsoft 365 Defender App
A Microsoft 365 Personal or Family subscription includes the Microsoft Defender app6, giving you real-time security notifications, expert tips, and recommendations that help protect you from hackers and scammers. It works with multiple devices and comes with identity threat monitoring, which helps you and your family stay safer online.
Explore Microsoft 365 Defender
Modern protection against modern threats
Ever-evolving security threats require top-level security to keep users, identities, data, and devices protected. In Windows11, hardware and software work together to help protect you and your information. Browse Windows11-equipped devices now.
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Windows security, continued
Our commitment to protect
With thousands of security experts working to hunt down threats, fix vulnerabilities, and stay a step ahead of cybercriminals—we’re doing all we can to help keep you safe.
Microsoft Support Security hub
Something bugging you?
The Microsoft Windows Insider Preview bounty program invites eligible researchers across the globe to find and submit vulnerabilities. Qualified submissions are eligible for awards from $500 to $100,000.
Windows Insider Preview Program
Supporting your security
Windows Security is your home to manage the tools that protect your device and your data. Access Windows Security by going to Start > Settings > Update & Security > Windows Security.
Manage Windows Security
- Screens simulated. Features and app availability may vary by region.
- Some features require specific hardware. Learn more at Windows 11 Specs and System Requirements.
- * For supported devices with latest security updates installed.
- 1 Facial and fingerprint recognition work with devices equipped with the correct sensors. PIN, facial, and fingerprint recognition require Windows Hello to be set up.
- 2 Available on the latest version of Microsoft Edge. Must be signed into a Microsoft account.
- 3 Files may be made available for offline use. Otherwise, internet access required. Fees may apply. OneDrive files are restored to the state they were in before the attack occurred. File versions created up to 30 days in the past can be restored at any time for any reason. Requires Microsoft account.
- 4 App available as separate download for free. Location permissions must be active; driving safety available only in the U.S., U.K., Australia, and Canada; Microsoft 365 Family subscription required for location alerts and drive safety features.
- 5 Only available on the latest version of Windows 11. In order to keep you as safe as possible, you must start with a fresh system. PCs that have been running previous versions of Windows must do a full reset of the Windows 11 operating system for the feature to work. Available in US and WE only.
- 6 App availability varies by geography.
FAQs
Is Windows Defender good enough for Windows 11? ›
Is Windows Defender good enough? Yes, Windows Defender is a good basic virus protection software. You may not find everything you want if you are extremely security focused. A third-party antivirus or anti-malware software will likely find threats that Windows Defender may miss.
Do I need to install antivirus on Windows 11? ›Advantages of Third Party Security Tool – Systweak Antivirus
Though you can supplement Windows Defender with Defender for endpoint, this will burden the system and the processing, this is what we despise. Therefore, Windows 11, 10 do need an antivirus that is designed for Windows and has additional security features.
Step 1: Launch the Windows Settings app by pressing Win + I. Step 2: Click App > App & features. Step 3: Scroll down to find Windows Security, click the three-dot menu and choose Advanced options. Step 4: In the new window, go to the Reset section, click Repair to repair it.
Is Windows security enough or do I need an antivirus? ›Antivirus is necessary even if you're on a Mac or Windows device, which both come with some level of virus protection built in. For total protection with endpoint protection and response, and blocks against malware and potentially unwanted programs, it's best to install a third-party antivirus software.
Which antivirus is best for Windows 11? ›- TotalAV Antivirus – best antivirus software for Windows 11.
- Bitdefender Antivirus – Windows 11 antivirus for excellent malware removal.
- Norton Antivirus – good antivirus for Windows 11 with many features.
- Surfshark Antivirus – security-guaranteeing antivirus with a VPN.
As part of the Windows Security suite, it will search for any files or programs on your computer that can cause harm to it. Defender looks for software threats like viruses and other malware across email, apps, the cloud, and the web.
Is Windows 11 antivirus better than Windows 10? ›In short, Windows 11 will be considerably more secure than Windows 10 by default through the use of HVCI and VBS.
What happens if I don't install Windows 11? ›First, you will miss out on the latest system features, security updates, patches, and compatibility for upcoming security features and programs. This lack of updates will mean your system will become more vulnerable to attacks.
Do I really need Windows 11? ›Windows 11 is worth the update for most people. It comes with a wide range of new features, performance improvements, and design changes. As the latest Windows OS, it usually gets more attention than Windows 10, too. There's not too much risk in upgrading to Windows 11, either.
Where can I download Windows Defender for Windows 11? ›Open https://aka.ms/WindowsDefender to go to Microsoft Defender in the Microsoft Store and select Install.
Why won't Windows Defender Open on Windows 11? ›
Restart your computer. This is a very common first step when troubleshooting basically anything in Windows, and it might just be all you have to do to get Windows Defender working again. Turn off Windows Defender, and then turn it back on.
Why can't I turn off Windows Defender in Windows 11? ›If the Tamper Protection is enabled, you won't be able to disable Real-Time Protection in Microsoft Defender using PowerShell. You can only disable Tamper Protection manually from Windows Security GUI. Navigate to Virus and threat protection section, scroll down and switch the Tamper Protection toggle to Off.
Can Windows Defender detect Trojans? ›Scan your PC using Windows Security
Another method you can try is to scan your PC using built-in Windows virus and threat protection tools. Microsoft Defender (called Windows Defender Security Center in older versions of Windows 10) can perform virus scans and detect various types of malware.
Yes, Microsoft Defender can detect and remove malware, but it isn't a reliable choice for protection against zero-day threats. During my tests, Microsoft Defender detected 98% of real-time threats. While this may seem outstanding, it pales in comparison to Norton's 100% zero-day malware detection.
Can Windows security remove Trojan virus? ›Windows Security is a powerful scanning tool that finds and removes malware from your PC.
How do I check if I have antivirus on Windows 11? ›To turn on Microsoft Defender Antivirus in Windows Security, go to Start > Settings > Update & Security > Windows Security > Virus & threat protection.
Can Windows 11 defender detect malware? ›Windows 10 and 11 include Windows Security, which provides the latest antivirus protection. Your device will be actively protected from the moment you start Windows. Windows Security continually scans for malware (malicious software), viruses, and security threats.
What are the disadvantages of Windows Defender? ›- Lacks integrated dashboard for all devices using Windows Defender.
- No accountability if the computer is infected by malware.
- Limited features for large scale use.
- Slows down installation of frequently-used applications.
Windows Defender is perfectly capable. Download Malwarebytes Free as a second opinion scanner to have around and be on your way.
Will Windows Defender remove Trojans? ›The Windows Defender Offline scan will automatically detect and remove or quarantine malware.