Every few months someone tells me they bought a Mac because “Macs do not get viruses.” In the same week, someone else asks if their Windows laptop is a sitting duck because it runs Windows. Both beliefs are stuck about fifteen years in the past.
The truth is calmer and more useful. Modern Windows and modern macOS both ship with serious, built-in protection. The differences are real but smaller than the reputations suggest, and what you do matters more than which logo is on the lid.
Key takeaways
- Both systems come with strong built-in defenses that are on by default.
- Windows is targeted more often simply because far more people use it, not because it is weaker.
- Macs benefit from a tightly controlled app store and app sandboxing, but they are not immune.
- The extra steps that matter (updates, disk encryption, a screen lock) are nearly identical on both.
What each system protects you against out of the box
Start with the good news: you are not starting from zero on either platform. Both include antivirus, a firewall, and disk encryption built in.
Windows ships with Microsoft Defender, a genuinely capable antivirus that updates itself and runs quietly in the background. It also includes a firewall and, on most newer machines, BitLocker disk encryption. Independent testing labs regularly rate Defender near the top for detection.
macOS includes XProtect for malware scanning, Gatekeeper to block unsigned apps, and FileVault for disk encryption. Apple also runs every app in a restricted sandbox, which limits the damage a bad app can do. For the bigger picture of how these pieces fit into keeping any device safe, the overview of securing your phone and computer is a solid companion read.
Why Windows gets attacked more
Windows runs on the large majority of desktop and laptop computers worldwide. Attackers are practical people. They aim at the biggest crowd, which means more malware is written for Windows.
That is a numbers game, not a verdict on the code. A well-updated Windows 11 machine with Defender running is not the soft target the old reputation implies. A neglected, out-of-date computer of either brand is the real soft target.
Mac malware is a growing business, not a myth. As Macs sell more, more criminals write for them. The gap in how often each platform is targeted is shrinking, so “I use a Mac” is not a security plan on its own.
Windows and Mac security features side by side
Here is how the built-in defenses line up. Notice how much overlap there is.
| Protection | Windows | macOS |
|---|---|---|
| Built-in antivirus | Microsoft Defender, on by default | XProtect, runs automatically |
| App vetting | SmartScreen warns on unknown apps | Gatekeeper blocks unsigned apps |
| Firewall | Windows Firewall, on by default | Built-in firewall (turn on in settings) |
| Disk encryption | BitLocker (Pro editions, some Home) | FileVault (may need turning on) |
| App isolation | Some sandboxing, growing | Strong app sandboxing |
| Automatic updates | Windows Update | Software Update |
One asterisk worth noting: the Mac firewall and FileVault are not always switched on by default, so it is worth checking both. On Windows, BitLocker is standard on Pro editions but not every Home machine encrypts the disk automatically.
The extra steps that matter on both
Here is the part that surprises people. The most important security habits are the same regardless of which system you chose. The logo does not change the checklist.
Keep the system updated
Updates patch the holes attackers rely on, and both systems can install them automatically once you flip the switch. This single habit does more than any brand choice. The routine for turning it on and leaving it on is covered in the guide to keeping your software updated automatically.
Turn on disk encryption
Encryption means that if your laptop is lost or stolen, the thief gets a shiny paperweight instead of your files. Turn on BitLocker on Windows or FileVault on a Mac if it is not already active.
Decide whether you need anything extra
For most people, the built-in antivirus on either platform is enough, and stacking a second one can cause conflicts. Whether you need more depends on how you use the machine, and the piece on whether you still need antivirus in 2026 works through the trade-offs for both systems.
Create a standard user account for daily work instead of using the administrator account all the time. On both Windows and Mac, this means malware that sneaks in has fewer privileges to abuse. It is a free upgrade most people skip.
Watch where your software comes from
The biggest real-world risk on either platform is not a clever hacker breaking in. It is a person installing something they should not have. A fake installer, a cracked app, a browser pop-up that insists you need a plugin: these hit Windows and Mac users alike.
Stick to official sources. Download apps from the maker’s own website, the Microsoft Store, or the Mac App Store. When a download arrives from a random search result or a link in an email, treat it as a stranger regardless of which system you run.
Both operating systems will warn you before running an app they do not recognize. Do not train yourself to click past that warning on autopilot. That single dialog is often the last thing standing between a curious click and a bad afternoon.
So which one should you buy for security alone?
If security is your only tiebreaker, it should not be. Both platforms are safe enough for a careful person and unsafe enough for a careless one. Buy the machine that fits your budget, your work, and the apps you actually use.
What separates a safe computer from a risky one is upkeep, not the badge. The U.S. Cybersecurity and Infrastructure Security Agency offers plain guidance on securing any home computer at cisa.gov, and it applies equally to both.
Your afternoon checklist
- Confirm automatic updates are turned on in Windows Update or macOS Software Update.
- Check that your built-in antivirus (Defender or XProtect) is active and current.
- Turn on disk encryption: BitLocker on Windows, FileVault on Mac.
- Verify the firewall is switched on, especially on a Mac where it may be off.
- Create and use a standard (non-administrator) account for daily tasks.
- Set a screen lock with a password or biometric that engages when the lid closes.
- Avoid installing a second antivirus that could conflict with the built-in one.
The brand rivalry makes for fun arguments, but it distracts from the point. A cared-for laptop of either kind will keep you safe, and a neglected one of either kind will not.
