The 3-2-1-1-0 Rule: Modernizing Backup Protocols for 2026 Cyber-Resilience
The traditional 3-2-1 backup strategy was designed to solve for hardware failure; the 3-2-1-1-0 rule is engineered to solve for adversarial intent. In a landscape where 94% of ransomware attacks now specifically target the backup server, a “copy” is no longer a recovery asset unless it is cryptographically or physically isolated from the production plane….



