Our take
What our shortlists say about each one.
- Microsoft Defender for Office 365
Best for: Teams running Microsoft 365
It is on the list because it is built into Microsoft 365, and many companies already own it through their license, so the buying question is often settled before you start. That makes it the natural first layer if you run Microsoft 365. Decide whether it covers your risk alone or needs a second product beside it, since it is built to work with other email security products.
From Best Email Security Solutions for Business, Fall 2026
- Palo Alto Networks Unit 42 Managed XSIAM
Best for: Large companies standardizing on Cortex XSIAM
Unit 42 Managed XSIAM is on the list for scope, because one service covers endpoints, cloud, network, identity and email with threat hunting and custom detection engineering. It fits mid-market and enterprise companies that are standardizing on Cortex XSIAM, since the service runs on that platform. Weigh that commitment before you sign, because leaving the service also means leaving the platform.
From Best MDR Solutions for Business, Fall 2026
Reviewed by Nika (Nikoloz) Kokhreidze.
