Malwarebytes Review 2026
review

Malwarebytes has occupied a strange niche in the antivirus market for over a decade. It started as the tool you reached for when your regular antivirus had already failed — the second opinion, the emergency responder, the thing you ran when someone handed you a laptop crawling with adware and browser hijackers. That reputation still clings to it today, and in many ways it’s earned.

The question for 2026 is whether Malwarebytes has evolved enough to be a primary line of defence, or whether it belongs in the toolkit as a complement to something stronger. After 14 days of hands-on testing across Windows 11, macOS 15 Sequoia and Android 14 — and cross-referencing against five independent lab reports — we have a clear answer.

Who makes Malwarebytes?

Malwarebytes, Inc. was founded in 2008 by Marcin Kleczynski, then a student who built the first version to clean his mother’s infected computer. The company grew to over 900 employees before a pair of restructuring rounds in 2022 and 2023 cut that number significantly. In November 2023, the enterprise business was spun off as ThreatDown, leaving Malwarebytes focused entirely on consumer and small-business protection. The company is headquartered in Santa Clara, California.

The 2021 incident — what actually happened

No review of Malwarebytes is complete without addressing the security incident that surfaces in reader questions. In January 2021, the same Russian state actor (APT29/Cozy Bear) responsible for the SolarWinds supply chain attack also targeted Malwarebytes. The attack vector was not the SolarWinds software — attackers exploited a dormant Microsoft 365 email protection app to access a limited subset of internal company emails. Crucially, no customer data was compromised, no production systems were breached, and the software itself was not affected. Malwarebytes disclosed the incident transparently within days of discovery. We consider this a point in their favour, not against them.

Detection — where it earns its score

In our 14-day hands-on test using 244 in-the-wild samples from AVLab’s November 2024 corpus, plus 30 EICAR variants and 12 script-based exploits, Malwarebytes blocked or removed 241 out of 244 threats — a 98.8% success rate on our own hardware. The three misses were obfuscated JavaScript droppers that also evaded Windows Defender in the same session, suggesting they were genuinely novel at the time of testing.

The independent labs confirm this picture. AV-Comparatives’ September 2025 Malware Protection Test placed Malwarebytes at 99.51% — firmly in the Advanced tier. More impressive: their September 2025 Stalkerware test returned a perfect 100% detection rate — the only product among 13 tested to achieve this mark. Stalkerware (software used to covertly monitor partners or family members) is an under-tested category where many mainstream vendors stumble. Malwarebytes doesn’t.

MRG Effitas testing in Q1 2026 confirmed the 100% result in their 360° assessment, leading PCMag to award Malwarebytes its “Best Tech Brand” recognition for 2026.

The weak spot is false positives. Across our own testing and the lab data, Malwarebytes flagged legitimate files at a higher rate than Bitdefender or Norton. TechRadar noted the same frustration: a file restored from quarantine was immediately re-detected as a threat, creating a loop. This matters less for typical users who are unlikely to encounter flagged software categories, but it’s a meaningful demerit for developers or power users with large software collections.

Katana: the detection engine under the hood

Malwarebytes’ newest detection layer, called Katana, uses machine learning models to identify malware families it has never seen before — not just known signatures. In practice, this catches the obfuscated and polymorphic threats that slip past traditional signature databases. Katana was updated significantly in 2025 and is the main reason Malwarebytes’ detection rates have improved year-over-year in AV-Comparatives testing.

Performance impact

This is where Malwarebytes starts to lose ground against Bitdefender specifically. On our PCMark 10 benchmark, installing Malwarebytes Standard on a clean Windows 11 machine produced approximately an 8% slowdown in boot time compared to the control image. Scan times were reasonable — a typical quick scan finished in under two minutes; a full scan of a 500 GB drive took around 25 minutes. RAM usage during idle real-time protection hovered between 200–300 MB.

The system footprint won’t trouble any machine made in the last five years, but Bitdefender — which consistently earns AV-Comparatives’ Advanced+ award in performance testing — is measurably lighter. If you’re on older hardware, this matters.

The interface

Malwarebytes’ UI is its unambiguous best feature. The dashboard is clean, minimal, and organised around a single prominent “Scan now” button. There is no upsell pop-up every time you open the app. No “security health score” designed to manufacture anxiety. Status is communicated in green, orange or red. That’s it.

Setup took us 47 seconds from download to first scan on Windows. 62 seconds on macOS. The Browser Guard extension — free and independent of your subscription tier — is similarly clean: it tells you when something is blocked and gets out of the way.

This simplicity comes at a cost: there are no advanced settings for experienced users. You cannot configure scan exclusions per-folder from the main UI without digging into menus, and you cannot create custom detection rules. Kaspersky offers this depth. Malwarebytes does not. For most home users, that’s a reasonable trade. For IT administrators or power users, it’s a limitation worth noting.

The Privacy VPN — a genuine exception

Most antivirus-bundled VPNs are embarrassing — watered-down, bandwidth-limited tools bolted on to justify a price increase. Malwarebytes’ Privacy VPN is a genuine exception. It uses the WireGuard protocol, claims a strict no-log policy, and in our Wireshark testing we confirmed no identifiable traffic leaked outside the encrypted tunnel during active browsing sessions. Bandwidth reduction averaged 12% in Ookla Speedtest measurements across five server locations — respectable for a VPN.

Coverage is strong: 500+ servers across 40+ countries. Streaming worked reliably on Netflix UK and US servers. The VPN is available on all platforms and covers all devices on your Plus plan. If you’re already shopping for a VPN separately, the Plus plan at $59.99 per year is a compelling bundle: real-time AV protection and a solid VPN for less than most standalone VPN subscriptions.

What’s missing

No firewall. No password manager. No parental controls. No identity protection unless you step up to Ultimate. No performance optimiser, file shredder, or webcam guard. Norton 360 bundles most of these. Bitdefender Total Security includes all of them. Malwarebytes deliberately keeps its scope narrow, which is either a clear product philosophy or a meaningful gap, depending on what you need.

The absence of a firewall is particularly notable: Malwarebytes relies entirely on Windows Defender’s built-in firewall on Windows. For most users, that’s adequate. For users running network-intensive applications or needing granular port controls, a third-party firewall is required alongside Malwarebytes.

Platform differences matter

Windows gets the full feature set: real-time protection, exploit blocking, ransomware rollback, web protection and scheduled scans. macOS gets real-time protection and scanning but loses exploit blocking and ransomware rollback. iOS and Android receive web protection, VPN access and (on Ultimate) identity monitoring, but no traditional antivirus scanning — iOS’s sandboxing prevents it architecturally, and Android’s feature set is functional but leaner than the desktop experience.

If you’re primarily a Mac user, Bitdefender’s macOS version offers a more complete feature set at a lower entry price.

Support — the notable weakness

Consumer support is a genuine problem. There is no phone line — a consistent complaint in Malwarebytes’ user forums. You can reach a human via live chat (for paid subscribers, logged in) or email ticket, but average resolution times for non-trivial issues run 24–48 hours. For a malware incident that’s locked you out of your machine, that’s a long wait.

The official Help Center documentation is excellent — detailed, regularly updated and searchable. The community forums are active and often faster than official support for common questions. But for people who need to speak with a human during an active security incident, Malwarebytes is not the right choice. Norton and Bitdefender both offer phone support on their consumer plans.

Pricing — read the renewal

Year-one prices are genuine bargains. The catch is renewal: Malwarebytes’ promotional rates are significantly discounted from regular pricing. Standard renews at $69.99/yr after year one; Plus renews at $84.99/yr. These are still competitive in the market, but read the checkout page carefully — renewal rates are disclosed but not always prominent.

Malwarebytes offers a 60-day money-back guarantee on all consumer plans — double the industry-standard 30-day period. No credit card is required for the free tier, and the free tier includes Browser Guard and on-demand scanning indefinitely.

Bottom line

Malwarebytes earns its place as the best option for users who want strong malware detection, a genuinely capable VPN, and zero friction — without needing the kitchen sink of a full security suite. It’s the right choice if you’re already using Windows Defender and want a capable real-time layer that coexists with it, or if you want a clean, approachable primary AV for a family member who doesn’t think about computer security.

It’s the wrong choice if you need an all-in-one suite, want granular configuration controls, or are running older hardware where every percentage point of performance impact matters. For those users, Bitdefender Total Security delivers more features, better detection accuracy, and a lighter footprint — usually at a lower year-one price.