15.3 Identity Secure Score
Key Takeaways
- Microsoft Entra Identity Secure Score quantifies how well your tenant follows Microsoft-recommended identity security controls and surfaces prioritized improvement actions.
- Improvement actions typically cover MFA registration and enforcement, blocking legacy authentication, privileged access hygiene (fewer standing admins, PIM), password protection, and related identity baselines.
- Identity admins prioritize recommendations by potential score impact, attack-surface reduction, operational risk, and dependency order (register methods before hard MFA enforcement).
- Identity Secure Score contributes to the broader Microsoft Secure Score experience across identity, devices, apps, and data—identity actions are a major early win for Zero Trust.
- Treat Secure Score as a continuous improvement program with measurement, change control, and exception documentation—not a one-time checkbox for the exam or for auditors.
Measuring identity posture, not just firefighting tickets
Logs (15.1) and diagnostics (15.2) tell you what happened. Microsoft Entra Identity Secure Score tells you how strong your control baseline is relative to Microsoft’s recommendations—and which improvement actions raise that posture. On SC-300, Secure Score is the governance-friendly answer to “how do we monitor and improve identity security continuously?”
This section closes the monitoring chapter and the Domain 4 monitoring skill group. After you can investigate events and export telemetry, you still need a prioritized backlog of preventive controls. Identity Secure Score is that backlog with scoring.
What Identity Secure Score measures
Identity Secure Score (shown in Microsoft Entra admin center under Identity Secure Score / Microsoft Secure Score identity actions) evaluates whether recommended identity and access controls are configured and adopted. Each improvement action has:
| Element | Meaning |
|---|---|
| Recommendation / improvement action | A concrete control (for example require MFA, block legacy auth) |
| Score impact | How many points (or relative weight) completing it can add |
| Status | Completed, to address, partial, risk accepted, etc. |
| Implementation guidance | Portal links and configuration steps |
| User/impact scope | Often percentage of users already compliant (for example MFA registered) |
The score is typically expressed as points earned versus points available for identity recommendations (UI presents percentages and comparisons). Microsoft may show historical trends and comparisons to similar organizations—use trends for program management, not as a competitive vanity metric that justifies unsafe rush changes.
What it is not
| Misconception | Reality |
|---|---|
| A penetration test | It checks control configuration/adoption, not whether your apps are bug-free |
| A substitute for sign-in investigation | High score with ignored high-risk users is still a failure |
| A license SKU itself | Actions often require P1/P2/E5 capabilities to implement fully |
| Instant 100% forever | New recommendations appear as Microsoft raises the bar; score can move |
| Only Global Administrator homework | Security Reader can often view; privileged roles implement changes |
Relationship to Microsoft Secure Score
Microsoft Secure Score is the broader Microsoft 365 / security posture score spanning multiple control families:
| Area (conceptual) | Examples |
|---|---|
| Identity | MFA, legacy auth, admin protection, self-service password reset hygiene |
| Devices | Compliance, Microsoft Defender for Endpoint onboarding (device team) |
| Apps | App governance, consent, Defender for Cloud Apps controls |
| Data | DLP, sensitivity labels (data security teams) |
Identity Secure Score is the identity slice of that program. SC-300 focuses on identity improvement actions—you are not expected to own every endpoint or DLP control, but you should know identity recommendations roll into the overall Secure Score narrative executives see.
Zero Trust mapping: identity actions are often the fastest high-leverage Secure Score gains because stolen credentials remain a top attack path. Device and data actions still matter; identity admins partner rather than “finish security alone.”
Common improvement action themes (SC-300 priorities)
Exact action names evolve; learn the themes Microsoft repeatedly scores:
1. MFA registration and enforcement
| Action theme | Why it scores |
|---|---|
| Require MFA registration / high registration % | Users can actually complete MFA challenges |
| Require MFA for admins / all users via CA | Stops password-only cloud access |
| Prefer phishing-resistant methods for privileged roles | Resists MFA fatigue and phishing |
Dependency order: authentication methods policy + registration campaigns (earlier chapters) → Conditional Access enforcement → Secure Score completion. Turning on hard MFA without registration tanks operations and may leave actions “partial.”
2. Block legacy authentication
Legacy protocols (older Office clients, basic auth patterns) cannot perform modern MFA and are favorite password-spray paths. Improvement actions push Conditional Access or security defaults-style controls that block legacy authentication.
Use sign-in logs and workbooks to find remaining legacy clients before enforcement—score points should not surprise the CEO’s ancient mail client without a migration plan.
3. Privileged access hygiene
| Action theme | SC-300 control |
|---|---|
| Fewer permanent Global Administrators | Least privilege; use privileged role admin patterns |
| Use PIM for eligible roles | Just-in-time activation, approval, MFA on activate |
| Protect admin accounts with stronger auth | Separate cloud-only admin accounts, phishing-resistant MFA |
| Limit standing membership in highly privileged groups | PIM for Groups / access reviews |
Secure Score often rewards reducing the number of users with permanent privileged roles and adopting PIM. That pairs with chapter 13 privileged access content and break-glass design (monitor those accounts; do not exclude them from all logging).
4. Password and credential posture
Themes include password protection (custom banned passwords, on-premises protection agents where hybrid), discouraging expired never-rotated secrets for apps, and self-service password reset readiness so helpdesk password resets are not the only path.
5. User and admin risk / protection features
Where licensed, actions may encourage Identity Protection policies (risk-based CA), Continuous Access Evaluation awareness, or related protections. Implement with the risk and CA skills from Domain 2—not by enabling every control in production without report-only pilots.
How identity admins prioritize recommendations
Do not sort only by “highest points first” if a high-point action would lock out the business. Use a prioritization matrix:
| Priority factor | Prefer actions that… |
|---|---|
| Attack likelihood reduction | Block password spray / legacy auth; enforce MFA |
| Blast radius | Privileged account protections before low-risk pilot groups |
| Dependencies | Registration before enforcement; CA report-only before On |
| Score impact | Break ties when security value is similar |
| Effort / ownership | Identity-owned CA changes before cross-team device compliance |
| Exceptions | Document accepted risk for break-glass and rare legacy LOB apps |
Practical 90-day identity score program
| Phase | Focus |
|---|---|
| Days 1–14 | Baseline score; export top actions; measure MFA registration %; identify legacy auth volume in logs |
| Days 15–45 | Registration campaign; pilot CA MFA; pilot block legacy for pilot group; start PIM for Tier-0 roles |
| Days 46–75 | Expand CA MFA; block legacy broadly with exceptions list; reduce standing Global Admins; enable risk-based CA in report-only then enforce |
| Days 76–90 | Access reviews for privileged groups; workbook + Secure Score review with leadership; document residual risk |
Re-measure Identity Secure Score and MFA registration metrics weekly. Combine with operational KPIs: time-to-investigate high-risk users, break-glass sign-in alerts, provisioning failure rates.
Continuous improvement mindset
Secure Score is a program, not a project:
- Detect posture gaps via Identity Secure Score + logs/workbooks.
- Prioritize with risk and dependency awareness.
- Implement using CA, methods policy, PIM, password protection, ID Protection.
- Validate with sign-in logs (failures/success), report-only results, and audit evidence.
- Accept risk formally when business requires temporary exceptions—do not silently ignore recommendations.
- Revisit when Microsoft adds actions or when M&A/hybrid changes expand the attack surface.
| Healthy behavior | Unhealthy behavior |
|---|---|
| Trend score upward over quarters with change control | Chase +20 points Friday night without communication |
| Pair each action with rollback/pilot plan | Enable every recommendation simultaneously in production |
| Use score in Zero Trust steering meetings | Hide declining score when new recommendations appear |
| Align actions to SC-300 control skills you already studied | Treat score as unrelated product trivia |
Tying Secure Score to monitoring tools
| Monitoring tool | Role in Secure Score program |
|---|---|
| Sign-in logs | Prove legacy auth, MFA interrupts, CA enforcement reality |
| Audit logs | Prove privileged role changes and policy edits |
| Provisioning logs | Ensure joiner accounts exist so MFA registration can succeed |
| Diagnostics + KQL | Fleet-scale evidence for leadership and auditors |
| Workbooks | Visual progress on MFA, CA, privileged ops |
| Identity Secure Score | Prioritized backlog and executive posture number |
Exam stems that say “improve identity security posture with Microsoft recommendations” often point to Identity Secure Score improvement actions, then to the specific control (CA MFA, block legacy, PIM) that implements the action.
Exam scenario patterns
| Stem cue | Direction |
|---|---|
| “Increase Identity Secure Score; many users still password-only” | MFA registration + Conditional Access MFA |
| “Score recommends reducing permanent admins” | PIM eligible roles; remove standing GA |
| “Legacy clients causing risk; recommendation present” | Block legacy authentication via CA after log analysis |
| “Compare tenant to Microsoft recommendations continuously” | Identity Secure Score + periodic review |
| “Need long-term proof of sign-ins while improving score” | Diagnostic settings + score actions (both) |
| “Overall Microsoft Secure Score is low; identity admin owns?” | Identity improvement actions first; partner on device/data |
Common traps
- Thinking Secure Score replaces Conditional Access design knowledge—you still must configure CA correctly.
- Accepting all risks to “green” the UI without documentation.
- Enforcing MFA for score points before registration campaigns.
- Ignoring privileged recommendations while only forcing MFA on standard users.
- Confusing Identity Secure Score with Microsoft Defender Secure Score for devices only.
- Believing a high score means no need for log monitoring—score is preventive baseline; logs catch active attacks and misconfigurations.
Chapter wrap: monitoring stack for SC-300
- Investigate with sign-in, audit, and provisioning logs in the Entra admin center.
- Export with diagnostic settings to Log Analytics, storage, and Event Hubs.
- Query and visualize with KQL and workbooks; alert on critical identity events.
- Improve posture with Identity Secure Score actions—especially MFA, legacy auth block, and privileged access hygiene—inside the broader Microsoft Secure Score program.
- Iterate continuously as recommendations, threats, and business systems change.
Summary of section 15.3
What is the primary purpose of Microsoft Entra Identity Secure Score?
Identity Secure Score recommends stronger protection and your MFA registration percentage is still low. What is the best sequencing for raising posture safely?
How does Identity Secure Score relate to the broader Microsoft Secure Score?
You've completed this section
Continue exploring other exams