Cyber Defense · lesson 3 of 12 · 15 min

Defense in depth

summary: Defense in depth uses multiple layers of protection so one failure does not expose everything. Examples include strong authentication, updates, network controls, backups, and monitoring.

question: Why use defense in depth?

options:

• Multiple layers can still protect when one fails
• It removes the need for planning
• It makes passwords unnecessary
• It replaces all monitoring

correct: Multiple layers can still protect when one fails

explanation: Layered controls reduce reliance on a single point of failure.

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