Multiple choice technology security

The application of multiple layers of protection wherein a subsequent layer will provide protection if a previous layer is breached is:

  1. Defense-in-depth

  2. Weakest link

  3. Fail-safe

  4. Control analysis
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A Correct answer
Explanation

Defense-in-depth is a layered security approach where multiple controls are implemented so that if one control fails or is bypassed, another layer continues to provide protection. This security-in-depth strategy creates redundant safeguards against threats.

AI explanation

Defense-in-depth is the strategy of stacking multiple, independent security controls (firewall, then IDS, then host hardening, then encryption, etc.) so that if an attacker defeats one layer, the next layer is still there to stop or slow them down. It deliberately assumes any single control can fail, which is different from 'weakest link' (which describes overall security being limited by the worst control) or 'fail-safe' (a design defaulting to a safe state on failure).

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