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From Blind Spots to Visibility: Defender and Sentinel for a Growing Tech Company
They asked for antivirus on their laptops. We found no centralized threat visibility at all - no SIEM, no coordinated response, just endpoint-only security reacting after the fact.
THE CHALLENGE
They asked for antivirus. Antivirus wasn't the problem.
The software company came to us with a simple request: get antivirus on the laptops. Growing headcount, growing attack surface, and security that had never kept pace with either.
The Real Problem Underneath
Antivirus alone doesn't see identity or email attacks - and those are the two most common entry points. There was no centralized visibility, no SIEM correlating signals across systems, and no coordinated way to respond when something did go wrong. Security was reactive by default, not by choice.
Locking down laptops wouldn't have closed the gaps that actually mattered.
OUR APPROACH
The fastest path to real visibility - in three phases
We didn't quote antivirus licenses. We reframed the ask as a visibility problem, covered the attack surfaces that actually mattered, and unified everything into one place teams could actually monitor. Step through each phase.
01
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Before adding any detection logic, we needed protection in place across every surface attackers actually use - not just the endpoint.
- Deployed Microsoft Defender XDR across endpoints, identity, and email as one coordinated layer, not three separate tools.
- Enabled Entra ID Identity Protection to flag risky sign-ins the moment they happened.
- Brought Defender for Office 365 online to catch phishing and malware in mail before it reached an inbox.
Outcomes
Full coverage across endpoints, identity, and email live within 4 weeks - surfaces that had zero coordinated visibility before the engagement started.
THE SOLUTION
One Microsoft stack, each part with a job
Unified protectionMicrosoft Defender XDR
The reason for the whole engagement: protected endpoints, identity, and email together instead of as three separate tools with three separate blind spots between them.
THE OUTCOME
From reactive and endpoint-only to monitored and correlated
3
attack surfaces unified - endpoint, identity, and email, in one view
68%
fewer manual alert triages
Under 15 minutes
average time to a correlated incident
Baseline established
scales with headcount instead of needing a rebuild
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