The Real Quantum Threat Is Already Here — And It’s Not What You Think

Infographic showing how quantum computers can break current encryption, explaining the “Harvest Now, Decrypt Later” strategy and the need for quantum-safe cybersecurity.

Introduction: Beyond the Hype

When most people think about the dangers of quantum computing, their minds jump to science fiction.

A super-intelligent AI.
An all-powerful digital brain.
A machine that “blows through everything.”

It’s a compelling story. It makes for great movies.

It also completely misses the point.

The real threats posed by quantum computing are far more subtle, more immediate, and far more dangerous. They aren’t waiting in some distant future. They are unfolding quietly, right now.

In a recent episode of the Impact Quantum podcast, Benita Zazueta of IBM’s Quantum Safe team offered a masterclass in resetting this narrative. Drawing on her background in both enterprise security and defense technology, she laid out what experts are actually worried about and why leaders should be paying attention today.

Here are three of the most important takeaways.

1. Your Encrypted Data Isn’t Safe — Even If It Looks Safe Today

The most urgent threat has a deceptively simple name:

“Harvest Now, Decrypt Later.”

Every day, massive volumes of encrypted data are being collected and stored:

  • Intellectual property
  • Government communications
  • Health records
  • Financial transactions

Right now, this data is secure. Classical computers would need centuries to crack it.

So attackers aren’t trying to break it today.

They’re saving it.

They harvest what they can. They store it cheaply. And they wait.

As podcast host Frank La Vigne noted, this strategy works because storage is inexpensive and patience is unlimited. Once sufficiently powerful quantum computers arrive, the stored data can be decrypted retroactively.

Years of secrets unlocked all at once.

Zazueta, whose experience includes defense work at Raytheon, emphasized the risk to information that must remain confidential for decades. In national security, healthcare, and finance, “temporary security” is not security at all.

2. The Threat Isn’t a Rogue AI — It’s a Machine That’s Better at Math

One of the biggest misunderstandings about quantum risk is the idea of a quantum-powered super-AI.

That isn’t the danger.

Quantum computers are not intelligent in the human sense. They don’t “think.” They don’t strategize.

What they do exceptionally well is solve certain mathematical problems.

Modern encryption relies on math problems that are practically impossible for classical computers to solve. Factoring large numbers, for example, would take centuries using today’s systems.

That’s what keeps your data safe.

Quantum computers are designed to attack exactly these problems.

They can run algorithms that collapse “impossible” timelines into practical ones.

Not instantly.
Not magically.

But fast enough to matter.

As La Vigne put it:

“Short enough to ruin your next credit card statement.”

Zazueta summarized it plainly:

“The threat of the quantum computer is its ability to solve those supposedly unsolvable math problems that protect our data.”

No sci-fi needed.

Just better mathematics.

3. The Biggest Barrier Isn’t Technical — It’s Human

If the problem is mathematical, the solution should be technical.

New algorithms.
New standards.
New infrastructure.

Those are all happening.

But Zazueta argues that the real bottleneck is elsewhere: in organizational behavior.

Her doctoral research examines how fault-tolerant quantum computers will affect software supply chains, especially the third-party components embedded in almost every system we use.

These hidden dependencies power:

  • Banking platforms
  • Energy systems
  • Healthcare networks
  • Government infrastructure

They are also notoriously hard to secure.

And business leaders consistently underestimate the risk.

To understand why, Zazueta applies theories from psychology, sociology, and decision science — disciplines rarely used in cybersecurity research.

She studies bias.
Inertia.
Risk aversion.
Short-term thinking.

The human factors that slow the adoption of quantum-safe practices.

As she explains:

“By using theories from psychology and sociology, I’m viewing the issue from a different lens.”

Her work recognizes a hard truth:

Our biggest vulnerabilities are often organizational, not technological.

Are We Ready for the Right Questions?

The quantum conversation is changing.

It’s no longer about “if” or “someday.”
It’s about “when” and “are we prepared.”

The message from this conversation is clear:

  • Today’s encrypted data may be tomorrow’s breach
  • The threat is mathematical, not sentient
  • Human systems are the weakest link

For CIOs, CISOs, CTOs, and board leaders, this isn’t an abstract research problem.

It’s a governance problem.
A procurement problem.
A risk management problem.

And a leadership problem.

Quantum-safe migration takes years.
Inventorying dependencies takes years.
Changing organizational behavior takes years.

Waiting until quantum computers arrive is already too late.

Quantum literacy is no longer optional.

The real question isn’t when the technology will be ready.

It’s whether we will be.