Malwarebytes and Windows Defender are two of the most popular free security options. But which one should you use? And can they work together? This comparison breaks it down for 2025.

Protection Comparison

Windows Defender has significantly improved and now scores near the top in independent lab tests. Malwarebytes Free offers excellent on-demand scanning but no real-time protection in its free version.

Can They Work Together?

Yes! Many security experts recommend using both: Windows Defender for real-time protection and Malwarebytes for periodic deep scans and malware removal.

Verdict

Windows Defender is sufficient for most users. Malwarebytes is excellent as a secondary scanner. Use both for maximum protection.