Antivirus for Chromebook: Do You Need It in 2026?

Do you need antivirus on a Chromebook?

Most Chromebook owners don’t need antivirus, because the protections a Windows antivirus adds are already built into ChromeOS and switched on. Google says each web page and app runs in a restricted “sandbox”, so an infected page can’t affect other tabs, apps or the rest of the machine. Each time the Chromebook starts, a self-check called Verified Boot looks for tampering and usually repairs the system on its own.

An antivirus app also can’t do much on a Chromebook. Antivirus apps for Chromebooks are Android apps, and Android apps run in their own layer of ChromeOS. A Bitdefender community moderator explained in 2022 that Bitdefender Mobile Security on a Chromebook scans only Android app files (.apk) “and nothing else”.

Antivirus apps that work on a Chromebook, ranked

Avast, AVG, Avira, Bitdefender and Norton tie at the top of AV-TEST’s July 2026 Android test, each catching 100% of the latest Android malware in real time. These apps run on Chromebooks that support Android apps, which Google says not every Chromebook does. AV-TEST tested the apps on Android phones, not on Chromebooks.

Not every product on the market. Links go to each vendor’s official site unless marked as partner links. How we rank Not ranked: Malwarebytes Mobile Security (not in AV-TEST's July 2026 Android test).

Every app here except G DATA scored 6/6 for protection in the same AV-TEST round (G DATA scored 5.5/6), so the ranking turns on small differences in detection. Kaspersky also scored at the top, but it isn’t listed because the US government barred Kaspersky from selling to US customers in 2024.

Free versions and trials as each vendor describes them on its US Google Play listing, checked October 24, 2026.

How does ChromeOS protect you without antivirus?

ChromeOS uses several layers at once, so if one is bypassed the others still apply. Google lists these:

• Automatic updates: Chromebooks update themselves, and Google promises 10 years of updates counted from the platform’s release date.
• Sandboxing: every web page and app runs in a restricted environment.
• Verified Boot: a self-check at every startup; Google says it keeps running even after a Chromebook stops getting updates.
• Data encryption: downloads, cookies and cached files stored on the Chromebook are encrypted with tamper-resistant hardware.
• Recovery: a key combination restores the operating system to a known good version.

What can still go wrong on a Chromebook?

Chromebooks are still exposed to scams that trick you rather than the computer. These are the real risks:

• Phishing: a fake login page works on any computer. The FTC says real companies won’t email or text you a link to update your payment details.
• Malicious extensions: an extension you approve can read and change data on the sites you visit. Chrome’s Web Store help says to approve only extensions you trust.
• Android apps from outside the Play Store: installing them means turning on Linux and ADB debugging, after which ChromeOS warns that some apps weren’t downloaded from the app store.
• Developer Mode: Google’s developer documentation says it makes Verified Boot “a little bit more lax”, so the Chromebook can run software Google didn’t sign.
• An expired update date: after the last automatic update, new security holes stay open.

Free antivirus for Chromebook

The best free antivirus for a Chromebook is the protection already on it: Google Play Protect for Android apps and Safe Browsing in Chrome. Google says Play Protect checks apps before you download them from the Play Store, scans your device periodically and can disable or remove harmful apps. Play Protect is on by default. In AV-TEST’s July 2026 Android test, Play Protect scored 6/6 for protection.

Chrome’s Safe Browsing warns you about dangerous sites, downloads and extensions. Standard protection is the default; Enhanced protection, Google’s strictest level, is under Settings > Privacy and security > Security. If you want a free app on top, Avast, AVG and Avira all have free versions and tied for first in the table above.

How do you run a virus check on a Chromebook?

A Chromebook virus check is three steps, and none of them needs a paid app:

1. Check Android apps: open the Play Store, select your profile icon, then Play Protect, to see whether its scans found harmful apps.
2. Remove extensions you don’t recognise: in Chrome, go to Extensions > Manage extensions and remove anything you didn’t add on purpose.
3. Powerwash if problems continue: sign out, press Ctrl + Alt + Shift + r, select Restart, then Powerwash. A Powerwash erases everything stored on the Chromebook, so back up your Downloads folder first; files in Google Drive stay.

Is it safe to bank on a Chromebook?

Banking on an up-to-date Chromebook is safe for most people, because the risk is the same as on any computer: a fake bank page or a scam text. Type your bank’s address yourself or use its app, and turn on multi-factor authentication, which the FTC says makes it harder for scammers to get in even with your password. Don’t bank on a Chromebook that no longer gets automatic updates.

For the same question on other devices, see whether a Mac needs antivirus, iPhone security apps and Windows laptops with Defender. If you’re weighing a paid app, our Norton and McAfee price comparison covers both brands’ plans.