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Security Fundamentals & Crypto · Intermediate

Secure by Design

Approach where security is built into a product's architecture and development from the start rather than added later.

Definition

Secure by design integrates threat modeling, secure architecture, and security requirements into every phase of design and development. Government initiatives such as CISA's Secure by Design pledge push vendors to take ownership of customer security outcomes. It reduces the cost and number of vulnerabilities compared to bolting on controls after release.

Example

A vendor eliminates default passwords and enables MFA by default before shipping a product.

Exam tip

Pairs with secure by default; the earlier security is included in the life cycle, the cheaper it is.

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