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CYBERSECURITY LAB · LESSON 4 OF 4

Backups and incident response

Read the explanation, try the exercise, then answer the quiz.

Understand the concept

Backups help restore data after failures or security incidents, but a backup that has never been tested may not be useful. Follow the 3-2-1 principle where appropriate.

A basic incident checklist includes isolating affected services, preserving relevant logs, rotating compromised credentials, rebuilding from known-good sources, and documenting lessons learned.

TRY IT YOURSELF

Practice task

Schedule a non-destructive restoration test of sample website files in a separate directory.

CHECK YOUR UNDERSTANDING

Quick quiz

What is the best way to confirm a backup works?