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Nvidia Rubin's Rack-Scale Encryption Signals a Turning Point for Enterprise AI Security

Nvidia unveiled the Vera Rubin NVL72 at CES 2026, a rack‑scale platform that encrypts every bus across 72 GPUs, 36 CPUs and the entire NVLink fabric, delivering the first fully confidential computing stack for AI workloads. The move addresses a growing security gap as frontier AI training costs surge and breaches of AI models rise sharply. Nvidia’s performance edge over its Blackwell line and AMD’s competing Helios rack highlight a rapid shift toward hardware‑based trust. Security leaders can now verify infrastructure cryptographically rather than relying on contractual assurances.