Protect email and collaboration from phishing, malware, and malicious links with a deployment that is tuned, usable, and operationally sustainable.
Email remains one of the most common entry points for modern attacks, including phishing, credential theft, and malware delivery. Microsoft Defender for Office 365 is designed to help protect organisations against malicious threats posed by email messages, links (URLs), and collaboration tools, and is integrated into the Microsoft Defender portal experience.
LW IT Solutions delivers Defender for Office 365 as an operational email security capability. We design policy architecture, implement Safe Links/Safe Attachments controls where applicable, align anti-phishing and impersonation protections to your risk profile, and tune detections to reduce false positives. We also operationalise investigation workflows (including Threat Explorer or equivalent investigation capabilities where available) and, where licensed, automated investigation and response. The outcome is a security control set that protects users without disrupting business workflows.
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Service Overview
Highlights
- Readiness and scope: validate current mail flow, threat profile, user populations, and operational constraints
- Policy architecture: align protection policies to user groups, risk tiers, and business-critical workflows
- Link and attachment protection: implement and tune Safe Links and Safe Attachments controls where applicable
- Anti-phishing and impersonation protection: configure and tune anti-phishing protections and targeted user protections
- Operational workflows: design triage and investigation process in the Microsoft Defender portal (roles, routing, and escalation)
- Threat investigation enablement: establish repeatable investigation patterns and evidence handling for suspicious messages
- Automation (where available): design how automated investigation and response will be used operationally, with approval and governance
- Reporting and governance: measurable outcomes, periodic review cadence, and change control to avoid configuration drift
Business Benefits
- Reduce successful phishing and malware incidents by improving detection and user protection controls
- Improve investigation speed with standardised triage workflows and repeatable investigation patterns
- Reduce noise and business disruption through policy tuning and governance of exceptions
- Strengthen assurance posture with documented controls, decision logs, and operational runbooks
Typical use cases
- Deploying Defender for Office 365 for the first time to strengthen email and collaboration security
- Tuning an existing deployment that generates excessive false positives or user disruption
- Rolling out protection for high-risk users (executives, finance, IT admins) with targeted controls
- Improving investigation readiness with consistent triage and evidence workflows
- Preparing for audits or customer assurance by documenting controls and governance
Objectives & deliverables
What Success Looks Like
- A Defender for Office 365 deployment aligned to your mail flow, threat profile, and operational model
- A tuned policy set that reduces risk without breaking legitimate workflows
- Operational readiness: roles, triage, investigation runbooks, and governance cadence
What You Get
- Readiness and design pack (scope, prerequisites, rollout plan, operating model)
- Policy architecture plan (user tiers, policy assignments, exception governance)
- Implemented and tuned email security policies for the agreed scope
- Investigation and triage workflow design (routing, escalation, and evidence handling)
- Operational runbooks and a handover session for your IT/SOC team
- Governance recommendations and reporting cadence for continuous improvement
How It Works
- Discovery and readiness - confirm mail flow, scope, prerequisites, and operating model; baseline current protections.
- Design - define policy architecture, user risk tiers, exception governance, and success measures.
- Implement and pilot - deploy policies to a controlled scope; validate detection quality and user impact; tune as needed.
- Scale - expand to production with staged changes and change control; refine workflows and escalation.
- Operationalise - deliver runbooks, training, and a governance cadence for ongoing tuning and improvement.
Engagement Options
- Readiness Assessment (prereqs, gaps, and rollout plan)
- Pilot Deployment (targeted scope + policy baseline + triage workflow)
- Rollout Programme (phased deployment with tuning and governance)
- Operate (ongoing optimisation: tuning, reporting, and workflow improvement)
Additional Information
Prerequisites & licensing
Defender for Office 365 features vary between Plan 1 and Plan 2. Microsoft documents that Plan 1 contains a subset of Plan 2 features, and that Plan 2 includes additional investigation, automation, and advanced capabilities. During readiness we confirm licensing and feature availability, then design the service to match what you have today—with clear upgrade options where beneficial.
- We define roles and access in the Microsoft Defender portal for investigation and administration.
- We stage high-impact protection changes through pilots to avoid disrupting legitimate mail flow.
- We implement exception governance so business-critical workflows remain stable and defensible.
Common Bundles
Customers who use this service often bundle with these services
Defender for Identity (MDI)
Deploy Microsoft Defender for Identity to detect identity attacks through sensor rollout, validated coverage, and operational alerting in hybrid environments.
Defender for Endpoint (EDR)
Deploy and operationalise Defender for Endpoint with phased onboarding, tuned policies, and clear triage workflows across managed device estates.
Sentinel Deployment & Integration
Deploy Microsoft Sentinel with structured data onboarding, workspace design, RBAC, and detection content so your SOC operates effectively and predictably.
Information Protection & Sensitivity Labels
Design and deploy Microsoft Purview sensitivity labels to classify data, apply protection controls, and support safer collaboration across Microsoft 365.
Frequently Asked Questions
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