In an insightful post dated July 30, 2025, Dale Peterson explores the potential for quantum-safe cryptography in Operational Technology (OT) systems. He emphasizes that as quantum computing advances, cryptographic algorithms currently used in OT—such as those for source integrity and content authentication—must avoid being hard-coded or inflexible. Instead, OT environments should be built with crypto-agility, enabling the replacement of broken algorithms without extensive re-engineering.

Peterson warns that retrofitting quantum-resistant solutions into legacy industrial control systems—or deploying systems with embedded, non-upgradable crypto—could quickly become obsolete once quantum attacks become viable. He argues that designing OT security with future-proof adaptability is not just prudent—it is essential if industries want to maintain trust in automated systems and avoid being undermined by emerging quantum threats.

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Source: https://dale-peterson.com/2025/07/30/quantum-cryptography-in-ot/