Is Linux Safer than Windows? The Ultimate Comparison

The Linux vs. Windows debate has been raging for decades, with security being a major focus. Linux zealots are quick with one-liners like “In a world without walls, who needs Gates or Windows?” That may get a chuckle, but the question remains: is Linux safer than Windows?

Linux is generally considered more secure by design. But that doesn’t mean Linux is bulletproof or that Windows is entirely defenseless: it’s a little more nuanced than that. In this post, we’ll take a look at how the two operating systems compare, especially when it comes to security.

Linux and Windows offer strong protections, but no operating system can fully protect your online activity. Cybercriminals, advertisers, and ISPs may still track you on public Wi-Fi or even at home. Using a VPN like Private Internet Access adds a layer of protection your OS alone can’t provide, encrypting your traffic and keeping your browsing private.

Linux vs. Windows: Key Differences

Linux and Windows take very different approaches to cost, privacy, security, and usability, and the table below lays out these key differences side by side.

	Linux	Windows
Source Model	Open source: Community-driven, transparent code.	Closed source: Proprietary, controlled by Microsoft.
Cost	Free to download, use, and modify.	Requires a paid license (but bundled with most PCs).
Privacy	Collects minimal telemetry data by default (varies by distro).	Collects telemetry and user data by default but allows some privacy management.
Security	Secure system architecture with strong permissions and open auditing.	Deploys layered security tools and a strict software update schedule.
Performance	Lightweight, runs well on older or low-spec hardware.	Resource-intensive, needs higher specs for smooth performance.
Ease of use	Steeper learning curve, varies by distribution (Ubuntu easier, Arch harder).	Very user-friendly and beginner-oriented.
Suitable for	Developers, sysadmins, servers, and privacy advocates.	General users, businesses, gamers, and office environments.

What Is Linux?

Linux is a family of free, open-source, community-developed operating systems for servers, computers, mainframes, and mobile devices. It was created by Linus Torvalds in 1991 and today has a desktop market share of just under 4%. 

While it’s far from the most popular desktop operating system, it’s favored on older, slower machines because it is so fast and stable. Also, most physical and virtual servers run Linux. Even Microsoft uses Linux for some of its cloud services, which says a lot. 

At the center of every Linux distribution is the Linux kernel. The kernel is the low-level software that controls the CPU, memory, and hardware devices. It decides which programs get access to system resources and ensures the computer runs smoothly. Everything else in Linux, from the graphical interface to web browsers, sits on top of the kernel and depends on it.

Because the kernel is open source and the Linux code is publicly available, anyone can adapt it to create different operating systems, called distributions (distros). This is why Linux exists in so many forms, from Ubuntu and Fedora on desktops to Red Hat  enterprise servers and even Android on smartphones.

What Is Windows?

Windows is a proprietary operating system created by Microsoft in 1985. Windows’ strength lies in its ease of use, broad software compatibility, and integration with Microsoft services. It’s why Windows enjoys a little under 70% of the global market share, making it the most used desktop operating system.

At its core is the Windows NT kernel, and on top of it, Microsoft builds a unified desktop environment: the Start menu, taskbar, and file explorer. This provides users with a consistent interface across versions.

Windows is closed-source: its inner workings are kept private and maintained solely by Microsoft. That’s also why it’s released only in official versions (such as Windows 11) with editions tailored for home, business, and server use: there are no community-driven distros.

5 Ways Linux Is More Secure than Windows

From its robust system architecture to its modest user base, Linux benefits from a number of features that make it very secure. Without getting too technical, here are the five main factors that make Linux arguably more secure than Windows.

1. Linux Default Permissions Help Prevent Malware

Permissions refer to the access rights users enjoy.

Historically, Windows gave both you and the files you download full administrator access by default, which made it more vulnerable to malware infections. Modern versions improved this considerably with user account control (UAC), which prompts your approval for system changes. It’s an effective system, but Windows allows you to disable it in the settings, which could allow malware in unnoticed.

Linux uses a similar principle but enforces it more rigidly. Standard accounts don’t have admin privileges, and gaining the root permissions needed to install software or make changes to the operating system requires typing a command manually in the terminal. Technically, you can still grant root access to malware on Linux, but it’s harder to do by accident and far harder to permanently disable these safeguards.

2. Linux Is Open Source

Open-source code is available for anyone to view, analyze, and debug. It leverages Linus’s Law, which states, “Given enough eyeballs, all bugs are shallow.”

An open-source project like Linux involves a massive community of developers volunteering their time and skills to make the source code better and more secure. 

Over 13,500 developers have contributed to the Linux kernel since 2005, according to the Linux Foundation. Coders from around the world do it for love, finding vulnerabilities, working on fixes, and making these changes available to everyone for free. 

In contrast, only Windows employees can access and work on Windows’ code, so it can’t benefit from the same kind of scrutiny. That said, Microsoft doesn’t take software security lightly. It employs thousands of professional software developers, runs bug bounty programs, and collaborates with external security experts.

3. Linux Software Installations Rely on Trusted Repositories

Most Linux distributions use package managers like apt, yum, or pacman to install software from trusted, signed repositories maintained by the community or distribution developers. This makes it much less likely you’ll accidentally download something malicious, and updates are generally handled automatically.

Windows gives you more ways to get software, which can be convenient but also riskier. Many users still download programs from websites, and not all sources are safe. Microsoft addresses this with the Microsoft Store, where apps are vetted before publication, and built-in tools like SmartScreen and Defender help protect files downloaded from elsewhere.

In short, Linux guides you toward safer sources by default. Windows can be secure too, but it relies more on updates, built-in protections, and user choices about where to get software.

4. A Smaller User Base Makes Linux a Less Desirable Target

One of the reasons Linux is more secure is because it’s so obscure. According to research by threat intelligence platform AV Atlas, more than 95% of malware affects Windows. With far more users to exploit, it’s a more profitable target for cybercriminals. 

Linux is also difficult to target accurately because it comes in so many different distributions. Each family of distributions (e.g., Debian, Fedora, Arch, etc.) uses different package managers, kernel versions, default configurations, and security tools. This means that an exploit written for one distribution may not work on another without extra development. This raises the cost for attackers, since they can’t easily create a single malware payload like they can for Windows.

5. Linux Collects Less Data

Windows is designed to share diagnostic and usage data with Microsoft automatically. By default, it collects details about your hardware, system performance, app usage, and error reports. It partially anonymizes some diagnostic data, but if you’re signed into a Microsoft account, some Microsoft apps may also collect location and activity data tied directly to your account. While you can change the settings to reduce the amount of data it shares, you can’t completely turn this function off in most consumer versions.

Linux, on the other hand, generally collects little or no telemetry by default. Most distributions don’t send any personal information back to developers unless you explicitly opt in.

How Linux Enforces Security at the Kernel Level

When we say Linux is “more secure,” it’s not just because the code is open source. The Linux kernel comes with powerful security frameworks that lock down what applications and services can do, even if they’re compromised. These tools enforce mandatory access control (MAC), meaning the system itself decides what processes are allowed, instead of leaving those choices entirely up to users or developers.

Here are three of the main mechanisms that make Linux harder to exploit:

Seccomp (Secure Computing Mode)

Think of seccomp as a strict filter for system calls, which are the requests programs make to the kernel when they need access to resources like files, memory, or networks. 

Instead of giving processes access to hundreds of different system calls by default, seccomp allows developers to specify exactly which ones are allowed and blocks the rest. This dramatically reduces the attack surface and makes it harder for exploits to succeed. 

Many modern applications, including web browsers and container runtimes like Docker, rely on seccomp to keep risky actions in check.

Windows has its own sandboxing mechanisms, such as AppContainers and Job Objects, but it doesn’t have a direct equivalent to seccomp’s detailed level of syscall filtering.

SELinux (Security-Enhanced Linux)

Originally developed by the US National Security Agency, SELinux provides a high degree of control over what processes can access which files, ports, and other system resources.

Instead of relying on regular Linux permissions, SELinux enforces strict policies that confine each process to only the resources it truly needs. This containment significantly reduces the damage a program can do, even when compromised. 

SELinux is widely used in enterprise-level distros like Red Hat Enterprise Linux (RHEL) and Fedora.

By contrast, Windows relies on discretionary access control (DEC), where users and administrators set permissions.

AppArmor

AppArmor ties security rules directly to applications, using profiles to define what files, devices, and network functions a program can access. It provides a similar layer of confinement to SELinux but is generally considered easier to configure and maintain. 

It can limit a program’s access to only the system resources it needs, reducing the damage a compromised process can cause. Ubuntu and SUSE Linux often ship with AppArmor enabled by default, offering a strong layer of protection without steep configuration overhead.

Windows uses similar application control technologies, but these focus more on controlling which applications can run rather than restricting what running applications can access.

Together, these tools give Linux a layered security model, meaning that even if a hacker breaks into a Linux app, strict controls usually contain the damage. By contrast, Windows relies heavily on user permissions and antivirus software, which can leave broader openings if malware gets past the first line of defense.

How Windows Security Strengths Are Catching Up to Linux

While Linux has a better reputation when it comes to security, don’t be too quick to write Windows off just yet. Microsoft has been working to close the gap in the last few years. The newest OS release includes integrated defense tools and benefits from continuous security upgrades.

Here’s what’s changed:

Microsoft Defender Antivirus

Microsoft Defender Antivirus is now built into every Windows installation, and it’s a big step up from its previous incarnation, Windows Defender. It provides real-time protection against malware, ransomware, phishing, and spyware, with automatic updates handled in the background via Windows Update. Independent testing now regularly ranks it on par with leading third-party antivirus programs, which is pretty impressive considering it’s included at no extra cost.

Secure Boot and BitLocker

Windows has gotten serious about preventing nasty code from running on startup. Secure Boot ensures that only trusted software with valid digital signatures can run when your PC powers on, stopping rootkits and malware from gaining a foothold. 

Pro and Enterprise editions include BitLocker, a feature that encrypts the entire disk, ensuring your sensitive data remains safe even if thieves get their hands on your computer. It’s powerful enough that many businesses rely on BitLocker to comply with data protection regulations.

User Account Control (UAC)

UAC has come a long way since its start in Windows Vista and is actually one of the best defenses against malware trying to sneak onto your system. It requires confirmation whenever applications try to make system-wide changes.

While it hasn’t lost its reputation entirely for being annoying (with regular pop-ups), it strikes a much better balance these days. It still catches suspicious requests without bothering you so much over the apps you actually want to install.

Regular Security Updates

Every second Tuesday of the month, Microsoft releases a fresh batch of security updates, dubbed Patch Tuesday by the IT community. These updates often patch critical vulnerabilities within days of their discovery. 

Windows Update delivers these patches automatically to most users, which is great, but they also require disruptive system restarts more often than you’d like. This consistent patching prevents leaving your computer exposed to vulnerabilities for long periods.

Windows Sandbox and Application Guard

If you’ve ever downloaded a program without knowing if it’s safe to run, Windows Sandbox lets you test suspicious software in a completely isolated, safe environment. Whatever happens in the sandbox poses no risk to your main system whatsoever – even if it’s a virus. When you’re done testing, you can just close the sandbox, and everything inside it disappears. 

Microsoft Edge’s Application Guard works similarly for web browsing, isolating potentially dangerous websites to protect you from web-based threats to your system. 

Together, these tools are on a par with Linux’s AppArmor or SELinux when it comes to containing suspicious downloads.

Enterprise-Grade Protections

Enterprise users can benefit from Microsoft’s latest suite of business-grade security tools. Its Credential Guard and Device Guard features use virtualization to create secure, isolated areas in your computer’s memory where sensitive information can hide from attackers. New AI-powered threat detection and response tools can spot and stop sophisticated attacks in real time.

These sophisticated tools provide layered defenses that rival, and in some cases surpass, Linux setups in managed corporate settings.

How Windows Enforces Security at the Kernel Level

While Windows doesn’t have exact equivalents to Linux’s seccomp, SELinux, and AppArmor, it does have powerful kernel-level protections of its own:

• Kernel Patch Protection (PatchGuard): Defends against rootkits by preventing unauthorized modification of the Windows kernel.
• Hyper-V Isolation: The same technology behind Windows Sandbox and Application Guard, Hyper-V enables containers and isolated environments that keep risky processes away from the core OS.
• Virtualization-Based Security (VBS): Uses Hyper-V to create secure regions of memory isolated from the normal OS. Features like Credential Guard and Device Guard build on this foundation.

These kernel-level defenses are structured differently from Linux’s mandatory access control systems, but they provide multiple layers of protection against modern security threats.

Linux vs. Windows: What About Performance?

In terms of raw efficiency, Linux usually has the edge. It’s lightweight, resource-friendly, and can be tweaked to run smoothly on older hardware. These qualities make it a good choice for server admins, developers, and anyone who prioritizes speed and control.

However, if you want to play games or run professional software, you’ll get better performance and compatibility from Windows. This isn’t because the system is necessarily faster when it comes to these tasks; it’s simply where most developers focus their efforts. This means games run more smoothly, and professional apps have all the extras on Windows. Linux versions exist for some programs, but they don’t always include the full feature set.

Linux can feel faster for browsing and other everyday tasks but requires you to be more flexible about your software choices. If you need specific software for work or take gaming more seriously, Windows is much more likely to meet your needs.

So, Is Linux Better than Windows?

The Linux vs. Windows debate is likely to run on and on, and both have strong arguments in their favor. When it comes to ease of use, gaming, and software compatibility, Windows wins the popular vote. But when it comes to security, Linux leads the pack. 

If you’re thinking of switching from Windows to Linux, be aware it may not be the holy grail Linux fans will have you believe. It can take some time to get used to, and you may also have to say goodbye to some of your favorite software or games. For some, that’s a price they’re happy to pay for the security, not to mention stability, speed, and community spirit of Linux.

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