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Proxar · UK expertise

Microsoft Defender security monitoring

Having Microsoft Defender available is not the same as knowing which systems it covers or who acts on its alerts. We help you connect the products you actually use to a clear security investigation and escalation process.

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Find out what is really connected

Start with the tenant, licences, device list and administrative access. Then compare the coverage you expect with the devices onboarded and services enabled. Missing reporting or systems handled by another supplier need to be identified rather than hidden behind a product name.

The Defender family includes different capabilities. Endpoint, email, identity and cloud-application coverage depend on the products licensed, deployed and configured. Defender XDR can connect related signals from participating products, but that does not automatically make every workload visible.

Give the alert a route beyond the console

We agree the products, tenants and device groups included, who reviews alerts and how an incident is prioritised. Investigation hours, urgent contacts and responsibility for follow-up need to be understood alongside the technical setup.

An endpoint alert may need device information and a conversation with the user before its impact is clear. If isolation or an account action is appropriate, the responding team needs the authority to act and a route to subsequent recovery. The presence of a button in the console is not an approval process.

Specialist reviewing Defender security monitoring findings
Specialist reviewing Defender security monitoring findings · Illustrative image

Keep monitoring and new deployment work distinct

Introducing another Defender product, changing security policies or extending coverage can involve separate configuration and licensing decisions. We identify those requirements before treating them as part of recurring monitoring.

A broader managed SOC is also a separate service decision, not something a product licence establishes on its own. Your proposal should explain which monitoring, investigation and response work is included and what remains with your team or another supplier.

Bring the products in use, the devices you expect to cover and the way alerts are handled today. That lets us start with the real environment rather than assume a subscription description tells the whole story.

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“I’ve worked with Proxar for a number of years and have always found them to be honest, knowledgeable and informative.”

StewartHead of Systems, Abodus Student Living

Before you decide

Your questions, answered

Does Microsoft 365 include every Defender capability?

No. The specific subscriptions, product entitlements and deployment requirements need checking for your environment. We identify the capabilities the proposed service depends on and any additional requirements before agreeing coverage. A Microsoft 365 account alone is not evidence that every Defender product is licensed and configured.

Does Defender XDR provide a staffed response service?

The product can help bring related security signals together, but staffing and response are service arrangements. We agree who investigates, during which hours and with what authority. Those commitments should be stated explicitly rather than inferred from the features available in the console.

Can you isolate a device when an alert appears?

Containment actions depend on the evidence and the authority agreed for the service. Isolating a device may interrupt legitimate work, so the process needs to explain permitted actions, customer approvals and communication. Investigation should also establish the route to recovery rather than treat isolation as the end of the job.

What happens if some devices are not reporting?

A reporting gap needs an owner and an investigation into its cause. The device may not be onboarded, may lack the required configuration or may sit outside the agreed coverage. We distinguish those situations and identify any additional deployment work rather than assume the dashboard is a complete inventory.

Your next step

How complete is your Defender coverage?

Tell us which products are active, which devices should be included and who handles alerts today. We will help you check the gaps and agree the investigation and response responsibilities around them.

Review your Defender setup 0203 196 6566