Microsoft SC-401 Cheat Sheet: Information Security

May 1, 2026

Review the Microsoft Information Security Administrator (SC-401) scope, Microsoft Purview, DLP, sensitivity labels, retention, eDiscovery, audit, insider risk, and data-security traps before practicing.

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SC-401 centers on protecting information through Microsoft Purview and related compliance controls. Use this cheat sheet to separate classification, protection, retention, investigation, and risk monitoring before practicing.

Use this with practice. Review the information-security checkpoints, then return to the SC-401 exam page for sample questions and update tracking.

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Exam snapshot

Field	Detail
Issuer	Microsoft
Certification lane	Microsoft Information Security Administrator
Exam code	SC-401
Main scope	Microsoft Purview information protection, DLP, records, audit, eDiscovery, and insider-risk controls
IT Mastery status	Sample questions available

Information-security map

Area	What to know	Common trap
Sensitivity labels	Classification, encryption, access restrictions, markings, containers, and user experience	Assuming a label automatically solves retention or DLP
DLP	Sensitive information types, conditions, actions, policy tips, endpoint controls, and exceptions	Blocking everything without considering false positives or business workflow
Retention and records	Retention labels, policies, record declaration, disposition, and lifecycle	Confusing retention with backup
eDiscovery and audit	Search, hold, review, export, audit evidence, and legal workflows	Deleting content before preserving evidence
Insider risk and communication compliance	Risk indicators, privacy-aware workflow, review, escalation, and remediation	Treating investigation as public accusation
Information barriers	Communication and collaboration restrictions for regulated separation needs	Using team membership alone when communication boundaries are required

Must-know distinctions

Distinction	How to decide
Classification vs protection	Classification identifies sensitivity; protection enforces encryption, access, or visual marking.
DLP vs retention	DLP controls risky movement; retention controls how long information is kept or deleted.
Retention label vs sensitivity label	Retention labels manage lifecycle; sensitivity labels manage information protection and classification.
Audit vs eDiscovery	Audit records activity; eDiscovery supports legal search, hold, review, and export.
Policy tip vs block	A policy tip educates or warns; a block prevents the action unless overridden or allowed.
Insider risk vs DLP	Insider risk looks for behavior patterns; DLP detects sensitive-content movement.

High-yield checklist

Start by identifying the data type, location, user action, and regulatory or business requirement.
Use sensitivity labels for classification and protection.
Use DLP when the scenario describes accidental or risky sharing, copying, printing, or transfer.
Use endpoint DLP when the activity occurs on managed devices.
Use retention labels or policies when the key requirement is keep, delete, or declare records.
Use eDiscovery when legal review, hold, or export is required.
Use audit when the question asks who did what and when.
Use insider-risk controls when behavior patterns and sensitive activity combine.
Consider user notification, overrides, and false-positive handling for DLP scenarios.

Common traps

Selecting DLP when the requirement is actually retention.
Selecting a sensitivity label when the requirement is legal hold.
Ignoring endpoint activity when the scenario mentions USB, print, or local copy.
Blocking all collaboration instead of applying targeted data controls.
Forgetting that investigation and audit need preserved evidence.
Treating compliance tooling as a replacement for clear policy ownership.

Practice strategy

For SC-401 misses, name the data-control category first: label, DLP, retention, eDiscovery, audit, insider risk, or barrier. Then decide whether the scenario is about protecting content, preventing movement, keeping records, investigating activity, or restricting collaboration.

Revised on Monday, May 25, 2026