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Do you actually need antivirus in 2026?

By Editorial Team Published 2 min read
os windows 11 tested 2026-09-09 retest 2027-03 by editorial team
Quick Fix
01 For most people on an updated Windows 11 PC, the built-in Microsoft Defender is genuinely enough — it scores top marks in independent tests. Just confirm it's on: Settings > Privacy & security > Windows Security.
02 Skip paid suites and absolutely skip "free" third-party antivirus that nags and bundles junk.
tested windows 11 · 2026-09-09

The honest answer for most home users on a supported Windows 11 machine: the antivirus you already have is enough. Here’s the reasoning, and the few cases where more helps.

Why Defender is enough for most people

Microsoft Defender (built into Windows) now scores top results in independent lab tests — a perfect protection score from AV-TEST and top certification from AV-Comparatives in 2026. For anyone who keeps Windows updated, installs software from official sources, avoids surprise email attachments, and uses different passwords per account, it protects against the threats they’re actually likely to meet, on par with paid products.

Just make sure it’s active: Settings > Privacy & security > Windows Security — everything should show green. Installing a third-party antivirus actually disables Defender, so you’re swapping, not adding.

The “free antivirus” trap

Third-party “free” antivirus is one of the things this audience gets caught by. Many nag constantly to upgrade, slow the machine down, bundle browser extensions and “PC cleaners,” and some cross the line into scareware. You already have a better one built in — don’t install these.

When you might want more

  • You prefer Chrome or Firefox — Defender’s anti-phishing is strongest in Edge, so a browser with good built-in Safe Browsing (both have it) or a reputable security extension helps.
  • You handle sensitive data or want an all-in-one suite with a VPN and password manager bundled (though standalone versions of those are often better).
  • You’re on an older, unsupported OS — but the real fix there is to get onto a supported system, not to bolt on antivirus.

Antivirus is one layer, not the whole plan

No antivirus fixes a reused password, an unpatched OS, or the lack of a backup. The things that protect you most:

  • Keep the OS and browser updated.
  • Use a password manager and unique passwords (see our getting-started guide).
  • Turn on two-factor authentication for email and banking.
  • Keep recoverable backups (see backing up properly) — the only real defence against ransomware.

Frequently asked questions

What about Macs and phones?

macOS and iOS/Android have strong built-in protections; typical users don’t need third-party antivirus. The same habits (updates, unique passwords, 2FA, backups) matter more.

Is Defender enough against ransomware?

It helps, and Windows has a “Controlled folder access” feature worth enabling — but the only reliable protection against ransomware is a backup you can restore from.

Do I need a separate anti-malware scanner?

An on-demand scanner (like the free Malwarebytes scan) is fine as an occasional second opinion, but you don’t need a second always-on antivirus.

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