Immutable Backup
What is Immutable Backup?
Backups that cannot be altered or deleted — even by ransomware or a compromised admin account. Write once, read many, change never.
Why Immutable Backup Matters
Ransomware actively seeks out and encrypts backups. Immutable backups are locked at the storage level, making them the last line of defense when everything else fails.
Related Topics
Related Terms
Ransomware
Malware that encrypts your files and demands payment for the decryption key. It spreads through phishing emails, malicious downloads, or compromised remote access. Paying doesn't guarantee you'll get your files back — and marks you as a target for repeat attacks.
SecurityBackup (the 3-2-1 rule)
A copy of your files stored somewhere else, so a dead computer doesn't mean dead data. The 3-2-1 rule: keep 3 copies of your data, on 2 different types of media, with 1 copy stored off-site — so a single fire, flood, or ransomware attack can't destroy everything.
BackupAir Gap
A backup that is physically disconnected from the network — no cable, no Wi-Fi, no connection. The ultimate protection against ransomware.
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