Do You Need Antivirus Software?

TL;DR: If you're on Windows, the antivirus built into your computer is good enough for everyday use — you don't need to buy anything. If you're on a Mac, you're well protected out of the box and probably don't need extra software either. A paid antivirus is worth considering only if you want add-ons like a VPN or parental controls bundled in.

The Short Answer By Device

Your device	Do you need extra antivirus?
Windows 10 or 11	No — Windows Defender already covers you
macOS	No — macOS has strong built-in protection
iPhone or iPad	No — iOS doesn't support traditional viruses
Android	Maybe — see the note below

Windows: Is "Windows Defender" Enough?

Yes, for most people.

Microsoft Defender (sometimes called Windows Defender) comes built into every Windows 10 and 11 computer. It turns on automatically and runs quietly in the background. You don't have to set it up — it's already working.

It wasn't always this good. A few years ago, third-party antivirus tools were clearly better. But Microsoft has invested heavily in Defender, and independent testing labs like AV-TEST now consistently give it top marks alongside paid products.

What Defender does for you:

• Scans files and downloads for viruses and malware
• Blocks ransomware (software that locks your files and demands payment)
• Receives automatic updates through Windows Update

💡 Malware is an umbrella term for any software designed to harm your computer or steal your information — it includes viruses, ransomware, spyware, and more.

When might you want something more?

Defender is a solid antivirus, but it's only an antivirus. Paid suites typically add extras like:

• A built-in VPN (see our VPN guide)
• A password manager (see our password manager guide)
• Parental controls
• Dark web monitoring (alerts if your email appears in a data breach)

If those extras sound useful to you, a paid suite can be a tidy all-in-one solution. Otherwise, stick with Defender.

Mac: Do I Need Antivirus?

Almost certainly not — especially for everyday family use.

Macs have a reputation for being safer than Windows, and it's well-earned. macOS includes several layers of protection that work without any effort on your part:

• Gatekeeper checks that any app you install comes from a trusted source before it runs.
• XProtect scans for known malware in the background, automatically and silently.
• System Integrity Protection prevents even software running with administrator privileges from tampering with core system files.

Macs are also a smaller target. The overwhelming majority of malware in circulation is written to attack Windows, simply because Windows has a much larger share of the market.

The bottom line: For a family member doing everyday browsing, email, and shopping, the built-in Mac protection is more than sufficient.

⚠️ Being on a Mac doesn't make you immune to everything. Phishing scams (fake emails and websites trying to steal your password) and browser-based tracking work on any device. Those are covered by other habits — good passwords, two-factor authentication, and being cautious with links.

Android: Worth a Quick Note

iPhones and iPads are locked down tightly and don't benefit from traditional antivirus apps — skip them.

Android is more open, and while the risk is still low for most people, it's the one mobile platform where installing a reputable security app can add a small layer of protection — especially if you sometimes install apps from outside the Google Play Store. If in doubt, Malwarebytes has a well-regarded free version for Android.

Free vs Paid: Do I Need to Spend Money?

For most family members — no.

Here's the honest breakdown:

Option	Cost	Protection level	Best for
Windows Defender	Free (built-in)	Excellent	Windows users — just leave it on
Malwarebytes Free	Free	Good (on-demand scan only)	A second opinion tool, not a replacement
Bitdefender Free	Free	Excellent	Windows users who want a lightweight alternative
Bitdefender Total Security	~€35–50/year	Excellent + extras	Those who want VPN, parental controls, etc.
Norton 360	~€40–60/year	Excellent + extras	All-in-one option with identity monitoring

💡 Our recommendation: Leave Windows Defender on and don't pay for anything unless you specifically want the extras a paid suite offers.

What No Antivirus Can Protect You From

This is worth saying clearly: the most common ways people get hacked don't involve viruses at all.

They involve:

• Clicking a fake link in an email or text message (phishing)
• Reusing passwords across sites, so one breach exposes many accounts
• Weak or guessable passwords

An antivirus does nothing against these. The most impactful steps you can take are:

1. Use a password manager — see our guide here
2. Turn on two-factor authentication — see our guide here

Those two things will protect you far more than any antivirus.