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Security Fundamentals & Crypto · Foundational

Data Loss Prevention (DLP)

Technology that detects and blocks unauthorized transmission or storage of sensitive data.

Definition

DLP solutions inspect content on endpoints, networks, email, and cloud services using patterns, fingerprints, and classification labels. They can block, encrypt, quarantine, or alert on policy violations. Microsoft Purview DLP, Symantec DLP, and CASB-integrated DLP are common implementations.

Example

A DLP policy blocks an email containing 20 credit card numbers from leaving the organization.

Exam tip

DLP addresses data exfiltration and accidental leakage; it relies on accurate data classification.

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