If you have a Windows 11 PC, your computer is constantly exposed to viruses, ransomware, Trojans, identity theft, and targeted attacks . Microsoft's system has greatly improved in security, but attackers have also stepped up their game, and simply having antivirus software is no longer enough. Protecting your computer requires combining the built-in protections of Windows 11 with additional security tools and proper configuration.
In this guide, we'll review, in detail, the best security tools and features to strengthen Windows 11 right now. You'll see what each type of software offers (antivirus, EDR, backups, VPN, anti-phishing, etc.), how Windows' built-in protection compares to third-party solutions, what threats are most prevalent, and which settings you should review to minimize human error.
The foundation: updates and ongoing maintenance of Windows 11
The first pillar of any security strategy in Windows 11 is to keep your system and apps fully updated with the latest patches . Each update fixes vulnerabilities that cybercriminals exploit to gain unauthorized access.
To check, go to Start > Settings > Windows Update and see if there are any pending downloads. It's essential to install both security and cumulative updates, as they often fix critical bugs in the operating system itself.
You should apply this same criterion to the rest of the programs: browser, office suite, video calling apps, email clients, messaging ... Any outdated software becomes a potential entry point for malware, even if the system is patched.
A good habit is to schedule regular system checks . This includes everything from installed software versions and antivirus status to disk space usage, unused services, and more. This routine helps you quickly detect unusual behavior, unrecognized applications, or settings that have been changed without your permission.
Antivirus, EDR and other professional cybersecurity tools
Windows 11 comes standard with Microsoft Defender Antivirus and a number of additional defenses (SmartScreen, firewall, attack surface reduction, virtualization-based isolation, etc.). For basic home use, this protection is sufficient. However, given the current level of threats, it often falls short and should be supplemented with more comprehensive cybersecurity solutions.
Security professionals don't just install a classic antivirus; they work with a much broader set of tools: EDR platforms , advanced antimalware protection, intrusion prevention systems, backup and recovery solutions, data and identity control , among others.
Endpoint Detection and Response (EDR) solutions combine real-time endpoint monitoring with automated analysis and near-instant response to suspicious behavior. Using machine learning and behavioral analysis techniques , they detect attack patterns that traditional antivirus software would miss.
In addition, there are packages that integrate anti-malware protection, advanced firewall, parental control, web filtering, device location monitoring, and protection against keyloggers, spyware, adware, botnets, and ransomware.
Beyond antivirus: Acronis Cyber Protect Home Office and data protection
One of the most interesting solutions for strengthening Windows 11 is Acronis Cyber Protect Home Office (formerly Acronis True Image), because it combines in a single product what many users have separately: antivirus, anti-ransomware and full image backups.
Its strength lies in its ability to use artificial intelligence techniques to identify malicious encryption in real time when it detects a ransomware attack, stop it, and automatically restore damaged files from backups. By working with full disk images, you can recover an entire computer or just specific files and folders.
Another very useful feature is the ability to create direct backups to the Microsoft 365 cloud (Outlook.com and OneDrive). This is something Microsoft Defender doesn't offer. This way, you not only protect your PC, but also your email and documents in the cloud against accidental deletions, data corruption, or targeted account attacks.
Furthermore, it includes specific features to protect video conferencing applications like Zoom, Webex, and Microsoft Teams against code injection, session ID theft, attacks via third-party libraries, and outdated client versions. It also extends protection to other devices, thus providing much better coverage for your entire digital environment.
What to consider when choosing security software for your business
When it comes to protecting a business, simply installing a well-known antivirus program and hoping for the best isn't enough. It's crucial to analyze whether the chosen solution offers scalability, a comprehensive approach, good support, and a clear view of risks and costs . These are the points to consider:
- Scalability. The tool must be able to grow with you, from a few users to dozens or hundreds, managing larger volumes of data, more complex networks, and more devices without becoming unmanageable.
- Robust and comprehensive approach to cybersecurityIt's not enough to focus solely on endpoint antivirus; you need to cover cloud, networks, identities, email services, storage, and, most importantly, human error. Many vendors already include email analysis modules, phishing simulations, and proactive threat hunting to anticipate the latest campaigns.
- Professionalism and real experience of the supplier. It's crucial that they understand your industry, know how to respond to incidents, and keep their staff continuously trained on new attack vectors. This makes a difference when it comes to investigating a serious incident and making quick decisions.
- Cost and licensing modelSometimes a cheap solution ends up being very expensive when you add up the costs of maintenance, updates, manual patches, and the time the IT team spends managing everything. It's best to be clear from the start about what you're paying for, what support you'll have, and what growth potential the platform offers.
Built-in security of Windows 11: strengths and limitations
Windows 11 has taken a significant leap forward from previous versions with a "secure by design" and "secure by default" security approach . Microsoft mandates hardware requirements such as TPM 2.0 and UEFI Secure Boot, and enables critical technologies out of the box to mitigate modern attacks.
Among these layers, virtualization-based security (VBS) and hypervisor-protected code integrity (HVCI) stand out, isolating sensitive processes (such as credential managers or security solutions) in protected environments, even if someone manages to execute code in the standard kernel.
They also incorporate specific protections against physical attacks by direct memory access (DMA) , mitigations for memory vulnerabilities (hardware-assisted stack protection), and Secured-core PC devices that strengthen the boot chain using dynamic roots of trust (DRTM) and system management mode isolation.
In the area of encryption, Windows 11 improves BitLocker and device encryption , makes it easier to protect both the system drive and external disks (BitLocker To Go), and introduces personal data encryption integrated with Windows Hello to protect user folders and documents.
All of this is complemented by a FIPS 140 certified cryptography stack , certificate management, code signing, device health attestation and support for TLS 1.3 , encrypted DNS, WPA3, OWE, 5G with eSIM and a much more controllable and auditable Windows firewall than in the past.
SmartScreen, reducing the attack surface and protecting against vulnerabilities
For everyday use, one of the first visible lines of defense is Microsoft Defender SmartScreen . This technology analyzes the websites you visit and the files you download, checking if they appear on phishing or malware lists, or have a bad reputation. If something seems suspicious, it issues a clear warning before you open the page or run the file.
In Windows 11, SmartScreen has evolved with improved protection against phishing : if you type your Microsoft credentials in a suspicious place (web or app), the system can warn you instantly that you are about to give your password to an attacker.
This is the basis for attack surface reduction rules , which allow blocking typical malware behaviors: obfuscated scripts, macros that directly call Win32, executables that attempt to download from untrusted locations, etc. Properly configured, these rules greatly reduce the likelihood that a malicious document or an infected USB drive will successfully execute its payload.
The controlled folder access feature adds another layer of protection against ransomware: only trusted applications can modify the contents of protected folders (such as Documents, Pictures, or Desktop). All other programs, no matter how persistent, will be blocked.
Above all this is vulnerability protection , which applies system-level and application-level mitigations (e.g., enforcing DEP, ASLR, CFG, etc.) to minimize the impact of security flaws, even in software that was not designed with modern threats in mind.
Hardening and privacy tools to “tame” Windows 11
In addition to Microsoft's built-in protections, many advanced users turn to specific utilities to tweak and remove anything they don't like in Windows 11 : telemetry, bloatware, Copilot, pre-installed apps, or interface changes they don't prefer. Here are some options:
- winaero tweakerIt groups dozens of system settings into a clearer interface than the Control Panel or Settings app. From there, you can disable data collection, remove automatically installed applications, change fonts, modify context menus, or even disable Windows Update or Defender (the latter is not recommended unless you are very sure of what you are doing).
- O & O ShutUp10 ++Designed initially for Windows 10 but fully compatible with Windows 11, its philosophy is simple: it presents you with a list of security and privacy settings (location, diagnostics, Office telemetry, Copilot usage, etc.) and you decide with a click what to enable or disable. A color-coded system indicates which settings are recommended, optional, or risky.
- Win11Debloat. A set of PowerShell scripts that allows you to remove bloatware, minimize telemetry, adjust the taskbar, Explorer, or Start menu, and disable components related to integrated advertising or AI features if you don't want to see them.
- W10Privacy. It's also designed to neutralize privacy-insensitive Windows features. It includes sections dedicated to privacy, default apps, telemetry, search, networking, Edge, system services, and more, using colors to indicate the impact of each change. The safest approach is to work with a backup of your configuration and avoid touching anything you're unfamiliar with.
Account management, privileges, and authentication in Windows 11
One of the most common mistakes is always using an administrator account for everything. In Windows 11, it's still highly recommended to work daily with a standard account. It's best to reserve the administrator account for specific tasks (installing software, changing settings, etc.).
The User Account Control (UAC) feature plays a key role. Every time an application tries to make sensitive changes to the system, Windows asks for your confirmation. Disabling these warnings might seem convenient, but it opens the door for any executable file to do whatever it wants without warning.
In professional environments, Microsoft is enhancing features such as administrator protection , which allows granting elevated privileges just-in-time for the specific task that needs them, reducing permanent exposure to attacks that seek accounts with high privileges.
Regarding login, Windows 11 is strongly committed to going beyond traditional passwords by using Windows Hello (PIN, face or fingerprint), FIDO2-compatible passkeys, authentication via Microsoft Authenticator, or even smart cards in more demanding scenarios.
Windows Hello for business, in combination with Microsoft Entra ID (formerly Azure AD), allows the deployment of a virtually passwordless environment , where identity is validated with biometric factors and cryptographic keys stored in the TPM, which are much more resistant to phishing and credential theft.
Identity and credential protection: LSA, Credential Guard, and tokens
Credential theft remains a daily occurrence for many attackers, so Windows 11 significantly strengthens the protection of passwords, hashes, and session tokens.
Local Security Authority (LSA) protection is now enabled by default on new installations and, after a short evaluation period, in updates. The LSA is responsible for authenticating users and managing single sign-on tokens. Ensuring it is protected means that it only loads signed and trusted modules. This makes it much harder for malware to hook into these processes to steal credentials.
There are some very interesting tools available. For example, for remote work scenarios, Remote Credential Guard prevents credentials from being sent across the network to the Remote Desktop destination computers, reducing the impact if an intermediate machine is compromised. And the new token protection features ensure that access tokens can only be used from the device to which they are linked, mitigating attacks based on session token theft.
Network, VPN and cloud services: close all doors
Windows 11 security isn't limited to the computer itself; it also extends to how it connects and to associated services. Windows Firewall provides highly granular, bidirectional filtering, integrates with IPsec, and now offers improved diagnostic and logging tools to understand which rules are in effect at any given time.
For external connections, the Windows 11 VPN platform integrates with Microsoft Entra ID and Conditional Access , supports both classic and modern protocols, and allows you to manage VPN status directly from the Quick Actions panel. This makes it easy to combine security and convenience on public Wi-Fi networks or in remote work environments.
Beyond traditional VPNs, Microsoft offers services like Entra Private Access and Entra Internet Access. These function as a cloud-based security perimeter for accessing internal applications and SaaS, enforcing Zero Trust controls based on identity, device state, and connection context.
On the storage side, OneDrive for Business encrypts data in transit and at rest, using unique keys per file protected in Azure Key Vault. It also applies strict access and audit controls. In addition, OneDrive for personal use adds features like Personal Vault , where you can store highly sensitive documents with a second layer of authentication.
In printing, the focus is on Universal Print and Windows Protected Printing , which eliminate much of the reliance on third-party drivers and reduce the attack surface associated with outdated print servers. With Mopria compatibility and management via Intune, you can control who prints what and from where, keeping print jobs encrypted in transit.
Backup, recovery, and remote wiping
No matter how well you protect your computer, you always have to assume that one day something might go wrong: ransomware, hardware failure, laptop theft, or a simple accidental deletion . This is where backup and recovery strategies come into play.
In addition to tools like Acronis, Windows 11 relies on OneDrive and the BitLocker device encryption feature to minimize damage. In case of loss or theft, the thief shouldn't be able to read the contents of the drive. And if you have important folders synced with OneDrive, you can restore them from the cloud.
In managed environments, the remote wipe configuration service provider allows administrators to completely reset a computer, wipe the drive, retain or discard user data, or prepare it for another employee. Combined with Windows Autopilot, much of the device lifecycle can be automated.
Services like Windows Autopatch and the Windows Update API help keep all of an organization's systems patched without so much manual work, reducing the window of exposure between when a patch is released and when it is installed on computers.
And with regard to hardening the configuration, Microsoft's security baselines for Windows 11 and Intune concentrate the recommended settings (BitLocker, SmartScreen, VBS, firewall, passwords/Hello, remote access restrictions, etc.) in tested templates, to apply them consistently to the entire fleet of devices.
Human error, phishing, and good user practices
Most successful attacks require the user to take some action: clicking a link, opening an attachment, installing a "miracle" add-on , or entering their credentials on a fake website. Therefore, no security tool is sufficient without common sense.
Phishing attacks are a classic example: emails or messages that impersonate banks, messaging services, well-known platforms, or even your own company. They often use lures like prizes, urgent security alerts, or fake invoices. While SmartScreen and email filters can help, the final decision to click or not remains yours.
Another critical point is the habit of downloading programs and documents from unreliable sources . This is one of the main sources of threats. Whenever possible, use the Microsoft Store or the developer's official website. Be wary of cracks, activators, and suspiciously fast downloads of paid software. The danger with these is that they often come bundled with Trojans, RATs, or very aggressive adware.
Browser add-ons are another classic vulnerability. Even when installed from official stores, it's important to check ratings, requested permissions, and external reviews. A malicious extension can read your browsing history, steal passwords, or inject malicious ads and scripts into the websites you visit.
Finally, be mindful of how you expose your personal data. Emails posted on forums, phone numbers visible on social media, excessive information shared publicly—all of this can be used for targeted attacks, identity theft, or mass spam campaigns. Only provide the information that is strictly necessary and carefully adjust the privacy settings of the apps and services you use.
By combining Windows 11's built-in defenses (TPM 2.0, VBS, BitLocker, SmartScreen, Firewall, Credential Guard, Windows Hello) with third-party solutions like Acronis Cyber Protect Home Office, hardening tools (Winaero Tweaker, ShutUp10++, Win11Debloat, W10Privacy), and best practices against phishing and suspicious downloads, you can make your PC much more secure against modern malware, identity theft, and human error. All without sacrificing convenience or the latest system features.
