Introduction
Imagine a world where every password, every bank transaction, and every secure communication you’ve ever made could be unlocked in minutes by a powerful machine. This machine is so powerful that it defies our current understanding of computing.
Sounds like science fiction, right? It’s not. This is the looming reality of quantum computing. This is why Tuhin Kanta Pandey, the Chairman of SEBI, recently raised a red flag at the Global Fintech Fest.
He was talking about the “quantum apocalypse” that could shake the foundations of global cybersecurity and financial systems.
His alert is not something that will only happen in the future, it is a shift that is happening now. Governments, businesses, and individuals must prepare and understand how to protect our digital world.
You might be wondering: what’s quantum computing, and why is it such a big deal?
In this blog post, we’ll explore what quantum computing is and how it poses an existential threat, especially to the global financial systems.
What is Quantum Computing?
Traditional computers, like your laptop or smartphone, process information using bits. A bit is like a tiny switch that can either be a 0 or a 1. Everything your computer does, sending emails, streaming videos, calculations, is built on combinations of these 0s and 1s. These computers, while powerful, solve problems step-by-step, which can take a long time for complex tasks, like cracking encryption codes.
Quantum computers, on the other hand, operate on a completely different level. They use quantum bits, or qubits, which are based on principles of quantum mechanics. It is a science of how particles, like electrons, behave at tiny scales. Unlike regular bits, qubits can be 0, 1, or both at the same time. This can be explained using a property called superposition.
The qubits gives the ability to quantum computer to explore many solutions simultaneously, making it incredibly fast for solving really, really hard problems. They can solving problems in seconds that would take traditional computers billions of years.
To get a perspective, think of traditional computer as a normal person. He is trying to solve a maze by trying one path at a time. A quantum computer can explore all possible paths at one. This makes quantum computers incredibly powerful for certain tasks, like breaking encryption. This is what is making quantum computers a threat to the existing financial ecosystem.
The Encryption Problem
Our current digital world, online banking, email logins, even government secrets, relies on encryption to stay secure.
What is encryption? It is like a super-strong lock that scrambles data so only someone with the right key (a password or code) can unscramble it.
The locks we use today, like RSA encryption, are based on complex math problems (like factoring huge numbers).
For a traditional computer, solving these problems to “break the lock” would take longer than the age of the universe, making our data safe, for now.
But quantum computers have changed this game as they are super fast in doing this kind of activity. They’re so fast that they could solve these math problems in minutes or even seconds.
In the world of developers, there is a famous algorithm called Shor’s algorithm. It is designed for quantum computers, which could crack RSA encryption in seconds.
It is expected that quantum computers, in a few years, they could unlock virtually every current encrypted system in the world.
This is what SEBI is warning about: a “quantum apocalypse” where our current cybersecurity defenses collapse.
What hackers are doing now when they do no have the power of quantum computers in their hands? They are using the tactic called “harvest now, decrypt later.” They are collecting encrypted data today, bank details, medical records, or private messages. Why? Because They will decrypt it later when quantum computers become more accessible.
Why Financial Systems are Especially Vulnerable?
Let’s see why financial systems, like banks, stock markets, and payment platforms, are particularly at risk.
Our money movements have all become online. Whether it’s online shopping, stock trades, or international wire transfers, all these transactions are protected by encryption.
If quantum computers break that encryption, the consequences could be catastrophic.
Here’s why:
- Banking: Imagine hackers accessing bank servers to steal funds, manipulate balances, or forge transactions. Without encryption, our savings could vanish, and banks might struggle to verify who’s who. Even digital IDs, like Aadhaar, could be compromised, making identity theft rampant.
- Stock Market: Financial markets, like those regulated by SEBI, rely on secure data for trades. If encryption fails, fake trades could flood the system. It can lead to stock prices crashing and wiping out investments. This could erode trust in markets, causing economic havoc.
- Payment Systems: From UPI to credit card networks globally, payment systems use encryption to ensure that our money goes to the right place. A quantum breach could let hackers redirect funds or create fraudulent transactions.
- Historical Data: Financial institutions store years of transaction records. With “harvest now, decrypt later,” concept, hackers could retroactively unlock this data. This will expose our sensitive details about businesses, governments, or individuals. This could lead to blackmail, fraud, or even worse consequences.
What’s Being Done, and What We Can You Do?
Experts are working on solutions. Post-quantum cryptography (PQC) is the solution to this threat.
PQC involves new encryption methods that even quantum computers can’t crack.
The US National Institute of Standards and Technology (NIST) has already finalized some PQC algorithms, and companies like AWS and Google are integrating them.
In India, the National Quantum Mission, backed by Rs 6,003.65 crore, is pushing quantum research. The side effects of quantum computing and its related threats are looming too close to us.
We as individuals, has less role to play in developing a solution to this threaet. But awareness is the first step. Here’s what you can do:
- Stay Informed: Keep an eye on how companies you trust (banks, apps) are preparing for quantum risks.
- Support Secure Platforms: Use services that prioritize strong cybersecurity and are adopting PQC early.
- Advocate for Change: Push for government and corporate action to prioritize quantum readiness, especially in finance.
By understanding quantum computing and its threats, we can be ahead of the curve.
Let’s hope governments, businesses, and tech leaders build a quantum-secure future soon. For now, the message is clear: the clock may not be ticking, but the bomb is real.
How real is the threat related to quantum computing?
To answer this, we must know who has the capability of quantum computing.
Quantum computers are mostly with big players like the US, China, and EU. They are backed by billions in government funding.
Companies like IBM, Google, and IonQ build these complex machines, accessible via cloud for research – not for the hackers.
India’s QpiAI launched a 25-qubit system in 2025, but access remains elite. Building these machines requires huge labs and expertise, keeping them out of rogue hands for now.
But the quantum threat is real because hackers can steal encrypted data now to crack later when quantum tech advances. While full decryption may be years away, progress is fast, and secret breakthroughs could accelerate risks.
SEBI’s warning pushes urgent adoption of quantum-safe encryption to protect future financial and data security.
Take care.
