← Courses
IT-202IT continuityPractitioner

Backups, immutability and restoration

Designing backups that survive a compromised administrator

Backup has become the last line of defence again, now that ransomware explicitly targets recovery arrangements. This course covers the 3-2-1-1-0 rule, isolation from the administration domain, and honest measurement of restoration time.

Learning objectives

  • Apply the 3-2-1-1-0 rule and understand each digit
  • Isolate backups from the administration domain
  • Measure a real restoration time
  • Meet DORA Article 12

Intended audience

  • Backup teams
  • CISOs
  • Operations
  • Technical auditors

Prerequisites

  • IT Continuity Fundamentals

Detailed curriculum

Module 1

The last line

What makes a backup genuinely recoverable after an attack.

Module 2

Restoring for real

Choosing a restoration point, measuring duration, and catching up lost data.