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SESK: Stuff Everyone Should Know · sesk.info/sec-offline-backups

CISA says to keep which kind of backups of critical data?

Offline, encrypted backups.

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  1. Offline, encrypted backups ✔
  2. Backups on the same server
  3. Printed backups only

Why: If a backup is always connected, ransomware can reach it and lock it too. An offline, encrypted copy stays safe so you can restore without paying.

Huh, didn't know that: CISA says to backup data often, offline or with cloud-to-cloud backups.

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I don't trust those cloud providers. Too much shady storage.
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References

Answer: Offline, encrypted backups. If a backup is always connected, ransomware can reach it and lock it too. An offline, encrypted copy stays safe so you can restore without paying.

  1. CISA: #StopRansomware Guide www.cisa.gov/stopransomware/ransomware-guide
    Maintain offline, encrypted backups of critical data
    Checked 2026-10-10.

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