We use Sophos Intercept XDR, have Microsoft E5 licenses, and are moving our SIEM to Sentinel. Sophos has stronger application and device controls for our needs, though we also use Admin By Request and restrict admin rights. What should we weigh before deciding whether to switch?
Does it make sense to move from Sophos XDR to Defender P2?
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H__3Nerwick
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Having E5 makes Defender P2 worth evaluating, but the license alone is not a reason to switch. Sentinel integration may make investigation and operations simpler, while you still need to confirm that Defender covers your detection, response, and policy requirements.
Run a controlled pilot with representative endpoints. Check alert quality, response workflows, performance, and how well your existing controls fill any gaps. Keep Sophos in place until the pilot gives you enough evidence to make a safe transition.
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Separate the endpoint decision from the SIEM migration. Sentinel can work with other endpoint products, so the SIEM move does not by itself require replacing Sophos. Compare the ongoing cost and operational burden of Sophos with the value of using tools you already license.
Also assess application control and device control separately from endpoint detection. Defender may not match the exact policies you rely on today, and a replacement control needs testing rather than assuming another Microsoft feature is equivalent.
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I'd look at the whole stack, not just EDR. Since you already have Admin By Request and no local admin rights, some of Sophos's control advantages may matter less. But verify that the controls you depend on are actually covered, and check whether the alternatives you are considering fit your management setup.
Microsoft's endpoint management and privilege-management options may be worth a test alongside Defender. Keep a written list of required policies and compare them against what you run now before making the change.
H2__Clorven:
That distinction helps. We have other endpoint-adjacent tools too, so we should compare the full set of capabilities rather than treating this as a one-for-one EDR swap.
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Don't assume the migration will be effortless just because the products are in the same ecosystem. Plan enrollment and policy deployment carefully, start with a small test group, and check how alerts and response actions behave before removing the existing agent.
Detection results can differ by configuration and environment, so judge the pilot using your own test cases and normal operations. A staged rollout also gives you a way to catch conflicts or missing controls early.
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H__3Nerwick:
We were considering starting with a test group and using EDR block mode. That seems like a sensible way to check the behavior before expanding.