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Malwarebytes vs Microsoft Defender: catalog facts
Malwarebytes	Microsoft Defender
Freemium A free scanner is available; real-time protection, VPN and scam detection are part of paid…	Paid Included with a paid Microsoft 365 subscription, with a free trial available.
Windows, macOS, Android, iOS, Browser extension	Windows, macOS, Android, iOS
Available on Windows, macOS, Android and iOS Combines malware scanning, VPN and scam detection	Manages security for several family members and devices from one dashboard Dark web monitoring for more than 60 types of personal information
Most protection features require a paid plan Closed source	Requires a Microsoft account and a Microsoft 365 subscription Closed source, with protection tied to Microsoft's cloud services
Downloadable app, Browser extension	Downloadable app
Closed source	Closed source
License not stated	License not stated
Not stated if an account is needed	Account needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked September 23, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.