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F-Secure Total vs Microsoft Defender: catalog facts
F-Secure Total	Microsoft Defender
Paid Paid subscription bundling VPN, password manager and antivirus.	Paid Included with a paid Microsoft 365 subscription, with a free trial available.
Windows, macOS, Android, iOS, Browser extension	Windows, macOS, Android, iOS
Bundles several protection tools under one subscription instead of separate purchases Covers desktop and mobile devices from one account	Manages security for several family members and devices from one dashboard Dark web monitoring for more than 60 types of personal information
Bundled VPN, antivirus and password manager subscription can cost more than picking best-of-breed tools separately Closed-source software, so internals cannot be independently audited	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 22, 2026	Official website Full listing and sources Checked September 23, 2026

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