Secure Backup Strategies
Why Backups Matter
Secure backups ensure that data can be recovered in the event of hardware failure, accidental deletion, ransomware, or other disasters, making them a critical part of any resilience and recovery strategy.
The 3-2-1 Backup Rule
A widely recommended strategy is to keep at least three copies of data, stored on two different types of media, with one copy kept offsite or offline to protect against localized disasters or ransomware that could otherwise encrypt all connected backups.
Backup Types
| Type | Description |
|---|---|
| Full Backup | Copies all data every time |
| Incremental Backup | Copies only data changed since the last backup |
| Differential Backup | Copies data changed since the last full backup |
Securing Backups
Backups themselves should be encrypted and access-controlled, since an unprotected backup can become an easy target for attackers looking to steal or hold data for ransom.
Secure backups ensure data can be recovered after an incident, and increasingly, that data and those backups live in the cloud - making cloud security principles essential to understand.
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