Glossary

Defense in Depth

Don't rely on one lock. Use multiple layers - firewall, antivirus, EDR, training, monitoring. If attackers get past one defense, they hit another. No single point of failure.

What is Defense in Depth?

A layered security strategy that uses multiple security controls so if one fails, others still protect assets.

Why Should You Care?

Understanding defense in depth is essential for building a strong security posture. This knowledge helps organizations identify threats early and respond appropriately.

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Real-World Example

Security teams regularly encounter defense in depth in their day-to-day operations. Recognizing and responding to these scenarios is a core security competency.

How to Protect Against Defense in Depth

  1. 1.

    Audit security controls at each layer

  2. 2.

    Ensure no single point of failure

Related Terms

Zero Trust, Firewall, Endpoint Detection Response

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