What Are Immutable Backups?
Immutable means that something is unable to be changed or deleted. Usually, immutable backups can only be deleted once a set time period has expired. Immutable backup data is safe from potential changes or deletions, meaning that its original integrity stays intact. With the rise of Ransomware, having an immutable backup has become critical for recovery. This is because threat actors now routinely attack backups. With an immutable backup that data is protected from these types of attacks.
There are many benefits of immutable backups beyond ransomware resiliency:
Data integrity and security
Data corruption prevention
Protection against malicious attacks
Compliance with data regulations (e.g., GDPR)
Reliable Disaster Recovery
Faster RTOs – no need to search for intact backups after the attack
Higher RPOs – many known good recovery points
Preservation of historical data
Ensuring auditability and compliance
Facilitating forensic analysis
Immutable backups are safe to use and recommended to be used with encryption by the US Cybersecurity and Infrastructure Security Agency (CISA) to help mitigate ransomware.
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