Today, we're turning our spotlight onto a critical but often overlooked aspect of cybersecurity: Data Backups and Redundancy. 'Data Backup' refers to creating copies of your digital files that can be restored if the original data is lost or damaged. In this context, 'Redundancy' means keeping additional copies so you're not relying on just one. Storing backups separately helps improve your chances of recovery if one copy is lost or compromised.
Why should you take data backups seriously?
- Protection Against Data Loss: From hardware failures to cyber attacks, data loss can occur unexpectedly. Regular, tested backups help you restore your valuable data when disaster strikes. NIST's backup guidance explains how maintaining and testing backups can reduce the impact of data loss.
- Buffer Against Ransomware: Ransomware can block access to your files or systems and demand a ransom. A recent, usable backup can help you recover without paying, but attackers may also target accessible backups. Backups do not prevent criminals from leaking data they have stolen. See the FBI's ransomware guidance and the Canadian Centre for Cyber Security's backup advice.
- Safeguarding Your Digital Legacy: Whether it's treasured family photos or important work documents, our lives are increasingly digital. Backups help protect this digital legacy.
Actionable Insights
- Regular Data Backups: Make regular backups of your important files. Use a schedule that suits your needs—daily, weekly, or monthly—and check that backups complete successfully. Choose a frequency that reflects how much recent work you could afford to lose. The FBI recommends regular backups and completion checks.
- Multiple Backup Locations: Don't put all your eggs in one basket. Follow the 3-2-1 backup rule: keep three copies of important data—the original and two backups—on two different media types, with one copy offsite.
- Keep a Backup Out of Reach: Maintain an offline, encrypted backup. If you use an external drive for this copy, disconnect it after backing up. Cloud synchronization alone is not enough: encrypted or damaged files can sync to the cloud and overwrite good copies. Check your service's recovery and version-retention options. CISA's #StopRansomware Guide explains these precautions.
- Test Your Backups: Ensure your backups are working as intended by conducting regular test restores. Check that restored files open and contain the information you expect. Government backup guidance recommends routine recovery testing.
Key Takeaways
- Data backups and redundancy help you recover from data loss and ransomware attacks, and help safeguard your digital legacy. They do not prevent data theft or guarantee recovery.
- Regular data backups, multiple backup locations, an offline copy, and testing your backups are crucial steps.
Stay #CyberSafe!