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Microsoft Defender vs Kaspersky Premium: catalog facts
Microsoft Defender	Kaspersky Premium
Paid Included with a paid Microsoft 365 subscription, with a free trial available.	Paid Paid subscription licence, with trial versions available.
Windows, macOS, Android, iOS	Windows, macOS, Browser extension
Manages security for several family members and devices from one dashboard Dark web monitoring for more than 60 types of personal information	Top tier of an established consumer security range Trial available before purchase
Requires a Microsoft account and a Microsoft 365 subscription Closed source, with protection tied to Microsoft's cloud services	Paid subscription that must be renewed Closed source
Downloadable app	Downloadable app, Browser extension
Closed source	Closed source
License not stated	License: Proprietary
Account needed	Not stated if an account is 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 24, 2026

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