Immutable Backups and the 3-2-1-1-0 Rule: Your Last Line of Defense
1. Introduction When everything else fails — antivirus, patching, the human factor — one answer remains for the worst-case scenario: the backup. But a copy without immutability is a false sense of security when the attacker knows where your data lives, because 94% of ransomware attacks attempt to compromise backups and 57% succeed. Immutable backups are the difference between a restoration in days and a negotiation with the extortionist or, in the worst case, the end of the business. In this article you will see the 3-2-1-1-0 rule explained piece by piece, what real immutability means compared with a revocable …

