Antivirus alternatives are worth considering when the incumbent gets expensive, restrictive, or invasive.

Microsoft Defender ships with Windows 10/11 and now scores at the same level as paid suites in independent AV-Test rankings. For most users it covers what Kaspersky does without the install.

Why consider the swap

If you currently rely on Kaspersky and want more control over data, lower long-term costs, or a free licensing model, Microsoft Defender covers most of the same ground.

What you trade off

Most free alternatives require more setup than their commercial counterparts and may lag on polish, mobile apps, or ecosystem integrations. Check the project’s documentation for current feature parity with Kaspersky before committing.

Where to start

• Project page: Microsoft Defender
• Comparison reference: Kaspersky

This recommendation is indexed from pixlrun-curated. Read their full project notes for the latest changes.