How to Secure Your Windows 11 PC from Hackers (10 Essential Tips)

Windows 11 is Microsoft’s most secure operating system yet, with built-in features such as Windows Security, Microsoft Defender Firewall, Smart App Control, and BitLocker designed to help protect your PC. However, these features can only protect your computer when they’re properly configured and kept up to date. Whether you use your PC for work, online banking, shopping, or everyday browsing, Outdated software, weak passwords, or unsafe downloads can make it easier for attackers to access your device or steal your personal information. In this guide, you’ll learn the most important Windows 11 security settings and best practices to help protect your PC from hackers and keep your personal data safe.

Tip 1: Review Your Windows Security Settings

Windows 11 includes Windows Security (Microsoft Defender), a built-in security solution that helps protect your PC from viruses, malware, ransomware, and unauthorized access. While many of its security features are enabled by default, it’s still worth reviewing them to make sure your computer has the best possible protection.

Check the following areas:

• Virus & threat protection – Verify that Real-time protection, Cloud-delivered protection, and Tamper Protection are enabled to help detect and block malware.
• Protection updates – Click Check for updates to make sure Microsoft Defender has the latest security intelligence.
• Firewall & network protection – Confirm that Microsoft Defender Firewall is turned on for your active network to help block unauthorized connections.
• App & browser control – Keep Microsoft Defender SmartScreen enabled to warn you about malicious websites, phishing attempts, and unsafe downloads.
• Device security – Make sure important hardware-based security features, such as Core Isolation (Memory Integrity), are enabled if your device supports them.
• Ransomware protection – Consider enabling Controlled Folder Access if you want additional protection for important folders against ransomware attacks. Keep in mind that you may need to allow trusted applications to access protected folders.

You don’t need to purchase third-party security software to protect most Windows 11 PCs. For many home users, Windows Security provides strong built-in protection when it’s properly configured and kept up to date.

Tip: Avoid disabling Windows Security unless you’re installing another trusted antivirus solution. Running your PC without active real-time protection can leave it vulnerable to malware and other security threats.

Tip 2: Keep Windows 11 Updated

Keeping Windows 11 up to date is one of the easiest ways to improve your PC’s security. Microsoft regularly releases security updates to fix vulnerabilities that attackers could exploit, along with reliability improvements and bug fixes that help keep your system running smoothly.

To install the latest Windows updates:

1. Press Windows key + I to open settings,
2. Go to Windows Update → Check for updates.
3. Download and install any available updates.
4. Restart your PC if prompted.

To improve your security even further:

• Turn on Get the latest updates as soon as they’re available to receive eligible updates earlier.
• Install important security updates instead of delaying them for weeks or months.
• Review Optional updates occasionally, as they may include important driver or firmware updates for your hardware.

While it’s a good idea to keep Windows updated, avoid downloading Windows updates from third-party websites. Always install updates through Windows Update or other official Microsoft tools.

Tip: Security updates don’t just add new features they fix known vulnerabilities that attackers may try to exploit. Installing updates promptly is one of the simplest ways to keep your Windows 11 PC protected.

Tip 3: Turn On Smart App Control

One of Windows 11’s lesser-known security features is Smart App Control, which helps prevent untrusted or potentially malicious applications from running on your PC. Instead of detecting malware after it has been installed, Smart App Control helps block suspicious apps before they can cause harm.

Smart App Control uses Microsoft’s cloud-based intelligence and code-signing checks to determine whether an application is safe to run. This provides an extra layer of protection against unknown apps, malicious scripts, and potentially unwanted software.

To check whether Smart App Control is enabled:

1. Open Settings > Privacy & security > Windows Security.
2. Click App & browser control.
3. Select Smart App Control settings.
4. If available, make sure Smart App Control is turned on.

Keep these important points in mind:

• Smart App Control is available only on supported Windows 11 devices.
• In many cases, it works best on a clean installation of Windows 11. If it has already been turned off, you may need to reset or reinstall Windows before it can be enabled again.
• If Smart App Control isn’t available on your PC, keep Microsoft Defender SmartScreen enabled, as it still provides protection against malicious downloads and unsafe websites.

Tip: Smart App Control helps stop potentially harmful applications before they run, making it a valuable additional layer of protection. However, you should still download software only from trusted sources and avoid running unknown applications.

Tip 5: Secure Your Microsoft Account

Your Microsoft account is connected to many Windows 11 features, including OneDrive, Microsoft Store, Outlook, Microsoft 365, and device synchronization. If someone gains access to your Microsoft account, they may also gain access to your personal files, emails, saved passwords, and other sensitive information.

To better protect your Microsoft account:

• Use a strong, unique password that isn’t used for any other online account.
• Enable two-step verification to add an extra layer of security when signing in.
• If available, use passkeys instead of a password for a more secure and convenient sign-in experience.
• Add a recovery email address and phone number so you can regain access if you ever lose your account.
• Review your recent sign-in activity regularly and investigate any login attempts from unfamiliar devices or locations.

If you share your computer with family members, make sure each person signs in with their own Windows account instead of sharing a single Microsoft account.

Tip: Your Microsoft account is often the key to your Windows 11 PC and other Microsoft services. Protecting it with a strong password, passkeys, and two-step verification is one of the most effective ways to prevent unauthorized access.

Tip 6: Enable BitLocker Device Encryption

If your Windows 11 laptop or PC is lost or stolen, someone may be able to access your personal files by removing the storage drive or attempting to bypass Windows sign-in. BitLocker Device Encryption helps prevent this by encrypting your data, making it unreadable without the correct authentication.

Many Windows 11 devices already have BitLocker or Device Encryption enabled by default, but it’s worth checking to make sure your data is protected.

If your edition of Windows supports BitLocker:

1. Open Control Panel > System and Security > BitLocker Drive Encryption.
2. Click Turn on BitLocker for your system drive.
3. Follow the on-screen instructions and save your recovery key in a safe location.

Before enabling BitLocker:

• Save your recovery key to your Microsoft account or another secure location.
• Don’t store the recovery key only on the encrypted drive.
• Make sure you understand how to recover your device if you’re prompted for the recovery key.

Tip: BitLocker protects your data if your computer is lost or stolen, but it doesn’t prevent malware or phishing attacks. For the best protection, use BitLocker together with Windows Security, strong account security, and regular Windows updates.

Tip 7: Download Apps Only from Trusted Sources

Many Windows 11 security problems start when users install software from unofficial websites or download modified applications. Cybercriminals often disguise malware as free software, cracked programs, browser extensions, AI tools, games, or system utilities to trick users into installing malware on their own computers.

To reduce the risk of installing malicious software:

• Download apps from the Microsoft Store or the software developer’s official website whenever possible.
• Avoid cracked software, key generators, and pirated applications, as they frequently contain malware or hidden backdoors.
• Install browser extensions only from trusted publishers, and remove extensions you no longer use.
• Ignore pop-ups claiming your browser, media player, or computer needs an urgent update. Always update software through its built-in update feature or the developer’s official website.
• During installation, read each screen carefully and decline optional software you don’t recognize.

Before installing a new application, take a moment to verify that the website is legitimate. Checking the download source only takes a few seconds but can help prevent malware infections and protect your personal data.

Tip: If an application is normally paid but is being offered for free on an unknown website, it’s best to avoid it. Downloading software only from trusted sources is one of the easiest ways to keep your Windows 11 PC secure.

Tip 8: Use a Standard User Account for Everyday Activities

Many Windows users sign in with an Administrator account for everyday tasks such as browsing the web, checking email, or downloading files. While this is convenient, it also gives malware and unwanted applications the same level of access if they manage to run on your PC.

A Standard User account has fewer permissions, making it harder for unauthorized software to install system-wide changes or modify important Windows settings without your approval.

For better security:

• Use a Standard User account for everyday activities such as web browsing, email, online shopping, and document editing.
• Reserve your Administrator account to install trusted software, change system settings, or perform maintenance.
• If Windows asks for an administrator password before making important system changes, verify that you initiated the action before approving it.
• Create separate user accounts for family members instead of sharing one administrator account.

To check your account type:

1. Open Settings > Accounts > Your info.
2. Under your account name, Windows will display whether you’re using an Administrator or Standard User account.

If you need to change your account type:

1. Go to Settings > Accounts > Other users.
2. Select the account.
3. Click Change account type and choose Standard User.

Tip: Using a Standard User account won’t stop every cyber attack, but it can significantly reduce the damage malware can cause by preventing unauthorized system-wide changes without administrator approval.

Tip 9: Disable Remote Access Features You Don’t Use

Windows 11 includes remote access features that allow another computer to connect to your PC for troubleshooting or remote management. While these tools are useful when you need them, leaving them enabled unnecessarily can increase your computer’s attack surface.

If you don’t use remote access features, it’s a good idea to turn them off.

Review these settings:

• Remote Desktop (RDP) – Disable it unless you regularly connect to your PC remotely.
• Remote Assistance – Turn it off if you don’t receive remote support from someone you trust.
• Nearby Sharing – Disable it when you don’t need to share files or links with nearby Windows devices.

To check Remote Desktop:

1. Open Settings > System > Remote Desktop.
2. Make sure Remote Desktop is turned off unless you actively use it.

To check Remote Assistance:

1. Open Control Panel > System > Remote settings.
2. Under the Remote tab, uncheck Allow Remote Assistance connections to this computer if you don’t use the feature.

Before enabling any remote access feature, make sure it’s protected with a strong Microsoft account password and two-step verification, and only allow access from people you trust.

Tip: Many home users never use Remote Desktop or Remote Assistance. If you don’t need these features, disabling them is a simple way to reduce potential security risks without affecting your everyday use of Windows.

Tip 10: Back Up Your Important Files Regularly

Even the most secure Windows 11 PC isn’t immune to hardware failures, accidental file deletion, ransomware, or other unexpected problems. Creating regular backups ensures you can recover your important files without permanently losing your documents, photos, videos, and other personal data.

Windows 11 includes built-in backup tools, and you can also use cloud storage or an external drive to keep additional copies of your files. The key is to create backups before something goes wrong.

For better protection:

• Enable Windows Backup to back up your settings, credentials, and selected folders.
• Store important files in a trusted cloud storage service so you can access them from another device if needed.
• Keep a second backup on an external hard drive or USB drive, and disconnect it after the backup is complete.
• Test your backups occasionally to make sure your files can be restored successfully.
• Create a backup before installing major Windows updates or replacing hardware.

Tip: A backup won’t stop malware or ransomware from infecting your PC, but it can prevent a temporary security incident from becoming a permanent loss of your important files.

Summary

Windows 11 includes powerful built-in security features that can help protect your PC from hackers, malware, ransomware, and unauthorized access. However, these features are most effective when they’re properly configured and kept up to date. Regularly reviewing your Windows Security settings, installing Windows updates, securing your Microsoft account, enabling features such as Smart App Control and BitLocker, and following safe browsing habits can significantly improve your computer’s security.

While no system is completely immune to cyber threats, taking a few minutes to strengthen your Windows 11 security settings can reduce the risk of becoming a victim. Make it a habit to review your security settings regularly and back up important files so you’re prepared if something unexpected happens.

Frequently Asked Questions (FAQs)