WD Announces Industry's First Post-Quantum Cryptography Hard Drives to Protect the Future of AI Data

Western Digital (Nasdaq: WDC, hereafter 'WD'), which provides the storage infrastructure underpinning the AI-driven data economy, today announced a significant step forward in next-generation infrastructure security by integrating Post-Quantum Cryptography (PQC) into its latest high-capacity Ultrastar® UltraSMR hard disk drives. As AI infrastructure evolves from a compute-centric model to a data system that continuously retains information across all inferences, training, and interactions, data durability and security are no longer value-adds but fundamental requirements. These drives are currently under evaluation by multiple hyperscale customers, indicating strong interest in quantum-resistant storage architectures.

AI data systems generate massive amounts of data that must be retained for long periods. Thus, protecting data for decades rather than years is a critical requirement for modern infrastructure. WD's announcement of the industry's first HDD to feature NIST-approved quantum-resistant cryptographic algorithms marks a major turning point, moving security measures for the quantum computing era from theoretical discussion to actual hardware implementation. By strengthening the Root of Trust, WD provides a crucial defense against future attack vectors like 'Harvest Now, Decrypt Later' (HNDL). This protects the massive data lakes supporting current AI innovation from the decryption risks posed by future quantum computers. WD is a pioneer in deploying post-quantum cryptography into practical storage infrastructure, driving the industry's transition to the quantum era and establishing a new standard of trust for AI-era data systems by implementing standards-based, infrastructure-level protection.

Why Post-Quantum Storage Security is Needed Now

In AI infrastructure and workloads, data is generated and accumulated semi-permanently, making it increasingly valuable over time. Consequently, the need to protect this data against cyber threats—which are evolving faster than many companies anticipated—is growing rapidly.

Extended data lifecycles and longer IT system operational periods elevate security risks. Enterprise storage systems are typically operated for over five years, potentially overlapping with the practical realization of quantum computers capable of decrypting current cryptography.

As decryption technologies advance, so do the tactics of attackers. HNDL is already a present threat. Attackers can collect and store encrypted or digitally signed data now, with the intent to decrypt it or forge signatures in the future when quantum computing technology matures. Therefore, organizations must begin preparing for long-term cryptographic resilience today.

Firmware-level attacks pose extremely severe risks. As security architectures evolve, ensuring trust at the device level is increasingly vital. Attackers exploiting quantum computers could forge digital signatures during firmware updates, disguising malicious code as legitimate, and compromising the drive's security.

WD's PQC Implementation

WD's new Ultrastar DC HC6100 UltraSMR employs a PQC implementation to protect the entire device chain of trust, from manufacturing to field service. This is not merely an added feature, but an approach that builds quantum-resistant security directly into the data infrastructure foundation. Specifically, it focuses on ensuring device-level trust, including firmware integrity and key management, rather than just encrypting data at rest.

Key Features:

Algorithm Selection: Adopts ML-DSA-87 (NIST FIPS 204) for highly reliable code signing. Through dual signing with RSA-3072, it combines traditional cryptography with new technology to achieve robust, highly resilient security.

Infrastructure Readiness: Introduces PQC-ready Public Key Infrastructure (PKI) and Hardware Security Module (HSM) workflows, supporting key issuance, renewal, and lifecycle management.

Operational Continuity: Designed to enable deployment across diverse environments without disrupting existing operations, utilizing dual signatures and rollback protection.

Dr. Xiaodong (Carl) Che, Chief Technology Officer and Senior Vice President at WD, stated: "As AI data grows in value the more it is accumulated and retained for long periods, future-proof protection becomes essential. Quantum computing is one of the most critical technological shifts of our time, progressing faster than many anticipated. The traditional security architectures that have supported enterprise storage for over a decade must evolve. Integrating post-quantum cryptography into our enterprise-class Ultrastar drives is a countermeasure against existing threats like HNDL attacks and part of our commitment to helping customers stay ahead of these threats. By complying with NIST standards and CNSA 2.0, we are helping organizations chart a smooth, low-friction path to a quantum-resistant storage infrastructure."

As quantum security requirements evolve, data protection at the infrastructure layer is becoming a foundational requirement for AI-driven enterprises. By embedding security into the system foundation itself rather than treating it as an afterthought, WD is driving the creation of a new standard of "trust" for AI infrastructure. WD plans to expand PQC capabilities to more enterprise hard drive product lines in the future.