Quantum computing is no longer theoretical. Google has set a binding 2029 deadline to migrate its infrastructure to post-quantum cryptography. The G7 has set 2030–2032 targets for critical financial systems.

Every digital platform built on current encryption standards, from banking systems to SaaS products to cryptocurrency wallets, is now operating within a shrinking window.

But where security risk is understood, the brand risk is not.

This is closer than you think.

In December 2024, Google introduced Willow. A quantum chip that achieved below-threshold error correction for the first time, solving a problem the industry had worked on for three decades. It completed a benchmark computation in under five minutes that would take the world’s fastest classical supercomputer 10 septillion years.

That moment changed the conversation. Not a concept. A proof point.

Since then, timelines have accelerated. Google has significantly reduced estimates for the resources needed to break 256-bit elliptic curve cryptography, which underpins most secure communications today. IBM’s roadmap targets a fault-tolerant quantum computer, Starling, by 2029.

Investment reflects the same shift. $3.7 billion in dedicated quantum funding in 2025. Over $140 billion committed across the sector.

The question has moved on. It is no longer if quantum computing will break current encryption. It is when. And leading researchers point to the next decade. Possibly sooner.

What breaks, and why it matters.

Current encryption, the kind protecting every online transaction, every customer portal, every secure communication your firm sends, rests on mathematical problems that classical computers cannot solve in any practical timeframe. Factoring large numbers. Solving elliptic curve equations. A classical supercomputer would need 300 trillion years to crack a 2048-bit RSA key. A quantum computer running Shor's algorithm could do it in hours.

This poses a systemic challenge.

RSA and ECC underpin HTTPS, digital signatures, banking systems, blockchain and secure communication. When they weaken, the systems built on them weaken too.

Cryptocurrency shows this clearly. Estimates suggest the elliptic curve cryptography securing Bitcoin could be broken in as little as thirty minutes on a sufficiently powerful quantum computer. Wallets with exposed public keys become vulnerable. The core trust model of decentralised finance begins to collapse.

Financial services face the widest exposure. Payments, securities, interbank messaging, compliance records and decades of transaction data all rely on encryption that will not hold indefinitely. Citi Institute modelling shows that a quantum-enabled disruption to systems like Fedwire could trigger trillions in indirect losses through cascading failures.

For SaaS and technology platforms, the risk is different but just as real. Every customer who shared data with your platform did so on the understanding it would remain secure. Quantum computing challenges that assumption, not just going forward, but retrospectively.

Harvest now, decrypt later.

This is where the timeline becomes immediate.

Encrypted data is already being collected and stored with the expectation it will be decrypted later. Intelligence agencies and sophisticated threat actors are actively harvesting encrypted traffic now, knowing its value increases over time.

If your data was captured in encrypted form in 2024, it could become readable in 2030. Regardless of what protections you implement in the future.

For sectors with long data retention cycles – like finance, healthcare, and government – this creates a delayed exposure. The risk is already in motion.

The security problem versus the brand problem.

The technical response is underway.

NIST published its first post-quantum encryption standards in August 2024. Google has committed to a 2029 migration. The G7 has set 2030–2032 targets. The UK has committed £2 billion to quantum investment. European frameworks like DORA and NIS2 are incorporating quantum risk.

The path exists. Complex, but defined.

But the brand challenge is different.

When encrypted data is exposed, it is not experienced as a cryptographic failure. It is experienced as a loss of trust. Studies show that after a breach, a majority of consumers consider stopping engagement entirely, with many moving to competitors.

For financial institutions, where trust underpins the entire business model, the impact can be existential. For technology platforms, it raises a deeper question: Did the organisation anticipate the risk and act, or did it wait?

Markets respond quickly. Yahoo’s acquisition valuation dropped following breach disclosures. AT&T’s 2024 breach led to immediate stock declines. A quantum-related failure will not be seen as unexpected. It will be seen as avoidable.

The firms already moving.

Some organisations are already acting.

• Google has set a binding 2029 migration deadline. A clear signal of intent and accountability.
• HSBC is running quantum key distribution trials and exploring post-quantum cryptography for transaction security.
• JPMorgan Chase is researching quantum-resistant protocols for financial messaging.
• NIST’s three standards, ML-KEM, ML-DSA and SLH-DSA, are finalised and ready for implementation.

There are also lessons in how organisations handle trust when things go wrong. Microsoft’s response to multiple breaches between 2022 and 2024, through its Secure Future Initiative and transparent reporting, led to a measurable recovery in public trust. The approach was clear. Acknowledge the issue. Communicate the response. Follow through.

The G7 timelines reinforce this direction. 2030–2032 for critical systems. Full transition by 2035. These are the benchmarks regulators will use.

What this means for digital platforms.

Every platform operating today relies on encryption that will need to evolve. The decision is not whether to act. It is when.

Starting now positions the transition as controlled and deliberate. Waiting shifts it into a reactive exercise under scrutiny.

There are three priorities.

• Understand your exposure. Where does public-key cryptography sit across your systems? What data is stored long term? Which vendors form part of your cryptographic chain? Many organisations do not yet have a complete view.
• Track the regulatory landscape. Standards are in place. Timelines are defined. Expectations are forming. Moving early creates advantage. Falling behind creates risk.
• Shape the trust narrative. Stakeholders will ask what you are doing about quantum risk. Clients, investors and boards expect a clear answer. The organisations that communicate early build confidence. The ones that stay silent create doubt.

The time to act is now.

Quantum computing will not arrive in a single moment. It will advance through milestones, each one narrowing the window further. Willow was one. Starling will be another. The pace will continue.

The organisations that maintain trust through this shift will be those that treated quantum risk as a business priority. Planned early. Communicated clearly. Acted before they had to.

Because when encryption has a lifespan, trust becomes the asset that takes longest to rebuild.

Let’s get things Done & Dusted.

Trust sits at the centre of every digital platform. And it is built as much through what sits beneath the experience as what sits on top.

We are a brand design agency designing and building platforms for fintech, financial services and technology brands where credibility and confidence are part of the product. From brand architecture and digital experience through to platform design and delivery, we help you create systems that hold together under scrutiny.

If your platform is central to how your brand earns trust, we can help you create an experience that’s built for now and future-ready.

Contact us today and let’s assess what your brand needs to take its next step.

Ready when you are.