Google’s 2029 Quantum Deadline Puts Encryption Readiness on Infrastructure Teams

Google’s 2029 deadline for moving to post-quantum cryptography is turning Q-Day from a distant security scenario into an infrastructure planning problem, a SiliconANGLE guest column by Graphiant Chief Executive Khalid Raza Shaikh warned.

The warning is not built around a single breach.

It treats Q-Day — the point at which quantum computers can break widely used public-key encryption — as a shared failure point for web sessions, software-update signatures, bank key exchanges and server certificates that rely on the same mathematical foundations.

Google set its own 2029 migration deadline in March, putting its schedule before the 2031 objective used by the National Security Agency and the 2035 guidance set by the National Institute of Standards and Technology for national security systems.

Faster progress in quantum hardware and error correction lowered Google’s view of how many qubits may be needed to threaten today’s encryption.

A separate research paper reached a similar directional conclusion through work involving Caltech, UC Berkeley and Oratomic.

A fault-tolerant quantum computer running Shor’s algorithm may require 10,000 to 26,000 qubits, far below earlier assumptions that ran into the millions.

That compression changes the operating problem for security teams.

The closest comparison in the column is the Year 2000 remediation push, but Y2K had a known calendar deadline and drew roughly two years of coordinated industry work.

Q-Day has a less certain date while still carrying a deadline pressure that could become shorter rather than longer.

The risk also begins before a quantum computer is ready to decrypt traffic at scale.

“Harvest now, decrypt later” attacks allow adversaries to keep encrypted data captured today and reopen it when future decryption becomes practical, making some long-lived records vulnerable even while current systems still appear intact.

Application-by-application remediation is the weak path in that setting.

Large organizations run thousands of services, deep dependency chains and third-party code that they cannot fully redesign.

A public certificate, software dependency or internal service left on vulnerable cryptography can become the weak link even if higher-priority applications are upgraded first.

The infrastructure-layer alternative is narrower: find where encryption lives across the network, identify central control points and update the fabric that carries traffic between systems.

Fewer upgrade points would not remove every application dependency, but it would give security teams a more realistic way to cover broad traffic flows before 2029.

Readiness data shows the gap between planning and deployment.

DigiCert’s 2026 Quantum Readiness Outlook put 87% of organizations in the planning, testing or implementation stage for post-quantum work, but measured meaningful certificate deployment of quantum-safe or hybrid cryptography at just 7%.

Axiad’s survey found no formal post-quantum key-exchange testing for public infrastructure at 51% of enterprises and no named migration leader at almost half.

A Ponemon Institute study sponsored by Entrust put active global transitions to post-quantum cryptography at 38%.

Those figures leave the practical next step at assessment rather than full replacement.

Organizations need an inventory of encryption across the network, a view of which systems can be upgraded centrally and a priority list of control points that can deliver the widest coverage before Google’s 2029 marker arrives.