How Companies Should Confront Q-Day

Dell's John Roese on Quantum Readiness, Cryptographic Inventory and Sovereign AI Rahul Neel Mani (@rneelmani) • March 28, 2026

Quantum computing poses an existential threat to current encryption systems because it can break the mathematics that cryptographic security depends on, said John Roese, global chief technology officer and chief AI officer at Dell Technologies.

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Asymmetric key management protocols, the backbone of most modern encryption, assume that certain mathematical operations, such as factoring prime numbers, are computationally prohibitive. Quantum systems will eliminate that barrier, forcing a fundamental rethink of cryptographic foundations.

"We're bringing a compute capability that can do mathematics. We've never been able to do that at scale, and the foundation of cryptography is mathematics," Roese said.

In this video interview with Information Security Media Group at RSAC Conference 2026, Roese also discussed:

• Why enterprises must inventory every system ...