Quantum Clock Ticks for Finance
A stark question is confronting the global financial industry: what happens when quantum computers become powerful enough to break the encryption protecting the world’s money and financial data?
The real concern is the “quantum tipping point” the moment when the time an institution needs to migrate to quantum-safe cryptography becomes longer than the estimated time remaining before cryptographically relevant quantum computers emerge.
This matters because much of today’s financial infrastructure relies on public-key cryptography. A sufficiently capable quantum computer could potentially compromise widely used cryptographic systems, threatening sensitive financial information, digital identities, communications and transactions.
The challenge is intensified by “harvest now, decrypt later” attacks. Adversaries can collect encrypted information today and potentially decrypt it in the future when quantum capabilities mature. For banks, payment companies and financial-market infrastructures holding long-lived sensitive information, migration therefore cannot wait for “Q-Day.”
Nobody knows precisely when that day will arrive. Estimates of the quantum resources required to attack cryptographic systems are also evolving rapidly as algorithms, hardware assumptions and error-correction techniques improve. Rather than focusing on a single prediction, institutions need to understand their own cryptographic exposure and migration timeline.
The discussion has become particularly relevant as finance moves toward tokenised assets, AI agents, autonomous transactions and increasingly interconnected digital-payment ecosystems. Post-quantum cryptography (PQC) therefore needs to become part of the security architecture being designed today not something retrofitted after quantum computing matures.
Financial institutions should begin by discovering their cryptographic assets, identifying vulnerable algorithms and certificates, prioritising critical systems, testing PQC migration and building crypto-agility so algorithms can be replaced without disrupting operations.
Dr. Deepak Kumar Sahu,Founder & CEO, FaceOff Technologies believes the quantum clock has already started ticking. Quantum readiness is no longer simply a research project; it is a migration programme. Institutions that wait for certainty about Q-Day may discover that the time required to transform their infrastructure exceeds the time they have left.