Microsoft Defender Security Services
We deploy, tune and monitor Microsoft Defender across endpoints, identity, email and cloud apps, so the protection you're already licensed for actually stops attacks rather than sitting on default settings.
Most Defender licences run on default settings and nobody watches the console.
A large number of organisations already own Microsoft Defender through their Microsoft 365 licensing but have never turned on the features that matter. Defender for Endpoint might be reporting basic antivirus detections while attack surface reduction rules sit disabled, automated investigation is switched off, and nobody has connected Defender for Identity to catch credential abuse against on-premise Active Directory. The licence cost is being paid; the protection isn't being used.
The second common problem is alert fatigue. Defender is genuinely good at surfacing suspicious behaviour, but a 60-user law firm with no dedicated security function will struggle to triage the volume of alerts a properly tuned deployment produces, particularly false positives generated before rules are adjusted to the applications actually in use. The result is either alert blindness or, worse, someone quietly disabling the noisy rule rather than tuning it.
Ransomware and business email compromise increasingly rely on legitimate tools rather than obviously malicious files — PowerShell, remote management software, macros in Office documents. Traditional signature-based antivirus misses much of this behaviour entirely, which is exactly the gap Defender's behavioural and cross-signal detection is built to close, provided it's configured to look for it.
There's also a coordination problem when Defender, email security and identity protection are managed by different teams or providers who don't talk to each other. An attacker moving from a phished mailbox to endpoint compromise to lateral movement across the network should trigger a single connected picture. Where those signals live in separate consoles reviewed by separate people, the connection often isn't made until the incident is already well advanced.
- Attack surface reduction and automated investigation left on default or disabled
- Alert volume nobody has capacity to triage consistently
- Behavioural attacks that never touch a recognisable malicious file
- Endpoint, email and identity signals reviewed in isolation from each other
We turn on what you're already paying for, then keep it tuned.
We start with a licence and configuration review — what Defender components you're entitled to under your current Microsoft 365 plan, what's actually deployed, and what's switched on versus left at default. This is often the single most valuable hour of the engagement, because it usually reveals capability you're already paying for but not using.
Deployment and onboarding follows, bringing devices fully into Defender for Endpoint, connecting Defender for Office 365 to your mail flow, and where applicable enabling Defender for Identity against on-premise Active Directory and Defender for Cloud Apps against your SaaS estate. We coordinate this through Intune where you're already using it, avoiding duplicate management overhead.
Tuning is the part most deployments skip. We enable attack surface reduction rules in audit mode first, review what would have been blocked, then move to enforced mode once we're confident legitimate workflows won't break. The same iterative approach applies to automated investigation and remediation settings, so the system takes appropriate action without disrupting the business.
Once tuned, alerts need somewhere to go. We either train your internal IT team to triage Defender's console confidently or provide managed monitoring ourselves, with agreed response times for high-severity detections, so the protection you've paid for is backed by someone actually watching it.
- Licence and configuration review before any new spend
- Coordinated onboarding across endpoint, email, identity and cloud apps
- Attack surface reduction rules tuned in audit mode before enforcement
- Triage handed to your team or covered by our managed monitoring
Everything in the engagement, set out up front.
A structured engagement covering assessment, deployment, tuning and ongoing monitoring options.
Licence and gap review
A clear picture of what Defender capability you already own versus what's actually switched on and configured.
Endpoint onboarding
Devices brought fully into Defender for Endpoint, coordinated with Intune where you're already managing devices there.
Attack surface reduction tuning
Rules enabled progressively in audit then enforced mode, matched to the applications your business actually runs.
Email and identity protection
Defender for Office 365 connected to mail flow and Defender for Identity configured against on-premise Active Directory where relevant.
XDR correlation
Endpoint, email, identity and cloud app signals brought into a single Microsoft 365 Defender view rather than separate consoles.
Managed monitoring option
24/7 alert triage and response with agreed severity handling for organisations without an internal security function.
What you receive.
- Defender licence and configuration gap report
- Device onboarding plan and completion tracking
- Attack surface reduction rule set, tuned to your environment
- Automated investigation and remediation configuration
- Cross-signal XDR dashboard walkthrough
- Alert triage runbook for your internal team
- Managed monitoring service option with response SLAs
- Quarterly configuration review recommendation
Built for organisations that need the work done properly.
Organisations already licensed but under-using it
Microsoft 365 E3/E5 or Business Premium customers with Defender entitlement sitting largely unconfigured.
SMEs without a dedicated security function
A 60-user professional services firm that needs endpoint protection tuned properly but has no capacity to triage alerts internally.
Organisations recovering from an incident
Businesses that have had a ransomware or phishing incident and need endpoint and identity protection genuinely hardened, not just restored.
Firms consolidating security tooling
Organisations running a separate third-party antivirus product alongside unused Defender licensing, looking to consolidate and cut cost.
What changes once the work is done.
What changes once Defender is properly configured and monitored.
Protection you're already paying for
Defender capability included in your existing Microsoft 365 licence actually switched on, often avoiding a separate antivirus renewal.
Behavioural attacks caught earlier
Attack surface reduction and behavioural detection catch techniques that file-based antivirus signatures miss entirely.
One view instead of four consoles
Endpoint, email, identity and cloud app signal correlated through Microsoft 365 Defender's XDR view, making genuine incidents easier to spot.
Alerts actually get actioned
Managed monitoring or a properly trained internal team means high-severity detections are triaged within an agreed time, not left unread.
Fewer disruptive false positives
Audit-mode tuning before enforcement means attack surface reduction rules block attackers, not your finance team's macros.
Cleaner audit and insurance conversation
Documented endpoint protection configuration supports cyber insurance renewal and client due diligence questionnaires.
Why work with a Microsoft security partner rather than the built-in defaults.
Microsoft ships Defender with sensible but conservative default settings, because a default configuration has to work reasonably well for every customer without breaking anything on day one. That caution is exactly why most deployments underperform their potential — the safe defaults leave attack surface reduction rules off, automated remediation on the most cautious setting, and cross-product signal correlation only partially configured.
As a Microsoft security partner, our value isn't reselling licences you can buy directly from Microsoft. It's the configuration, tuning and ongoing monitoring work that turns a licence entitlement into an actively defended estate. We've done this across a range of Microsoft 365 tenants and know which attack surface reduction rules cause friction with common line-of-business applications before we switch them to enforced mode on your network.
We deliver this work for organisations across Chesterfield, Sheffield, Derby, Nottingham, Leeds, Manchester, Birmingham and London, either as a one-off deployment and tuning project or as part of an ongoing managed security services UK arrangement where we continue to monitor and adjust configuration as your estate and the threat landscape change.
If you're already running Microsoft Sentinel, we correlate Defender's endpoint, email and identity signal into that wider SIEM view so your SOC isn't reviewing Defender's console and Sentinel's incidents as two disconnected sources of truth.
Questions we are asked most often.
What is Microsoft Defender, exactly?
Defender is Microsoft's family of endpoint and extended detection tools — Defender for Endpoint, Defender for Office 365, Defender for Identity and Defender for Cloud Apps, tied together under Microsoft 365 Defender's XDR console. Licensing varies by Microsoft 365 plan, so the first job is usually working out what you already own before buying anything new.
Do we need a SOC to use Defender properly?
Not necessarily, but someone needs to be watching the alerts. Defender generates high-quality signal, but signal without triage just becomes noise in an inbox. Smaller organisations often pair Defender with our managed monitoring so alerts get actioned rather than accumulating unread.
How is Defender different from a traditional antivirus product?
Traditional antivirus looks for known malicious files. Defender for Endpoint adds behavioural detection, attack surface reduction rules, automated investigation and cross-signal correlation with email, identity and cloud app activity, which catches attacks that never touch disk as a recognisable file.
Can Defender replace our existing firewall or network monitoring?
No. Defender covers endpoints, identity, email and cloud apps; it isn't a substitute for network-layer controls, firewalls or a SIEM covering your wider estate. It sits alongside those tools, and where you also run Sentinel we correlate Defender's signal into that wider view.
What is attack surface reduction and do we need to configure it ourselves?
Attack surface reduction rules block specific behaviours commonly used by malware and ransomware — things like Office applications spawning child processes or scripts from email attachments. The rules exist in Defender but are not switched on by default in a useful configuration; we tune and enable them based on your applications so they don't break legitimate workflows.
How long does deployment take?
Onboarding devices to Defender for Endpoint typically takes one to three weeks depending on device count and whether you're managing them through Intune already. Tuning detection rules and attack surface reduction policies to your environment without excessive false positives usually takes a further two to four weeks of iteration.
Will this generate alerts our IT team can't handle?
It can, if nobody is triaging them. That's the most common reason Defender ends up under-used — the licence is active but alerts sit unread. We either train your internal team to triage effectively or provide managed monitoring so alerts are actioned within an agreed response time.
Microsoft Sentinel managed SIEM
Correlate Defender's endpoint, email and identity signal into a wider SIEM view with managed monitoring.
Managed security services
Ongoing monitoring and incident response for organisations without an internal security function.
Talk to a consultant
Discuss your current Microsoft 365 licensing and what Defender capability you're already entitled to.
Want to know what your current Defender licence is actually doing?
Book a free configuration review and we'll show you, plainly, what's switched on, what isn't, and what it would take to close the gap.
Book a free configuration review