Network Security - Secure by Design Engineering

Secure by Design means security is built into the system from the beginning, not added later.

Core principles

• Least privilege

• Minimized attack surface

• Secure defaults

• Defense in depth

Why it matters

Fixing security issues later is:

• Expensive

• Risky

• Often incomplete

Example

A system designed with proper access controls is safer than one where security patches are added after deployment.