The idea of quantum computers could be science fiction. But now scientists in labs around the world are working on machines that will be able to solve some math problems thousands of times quicker than today’s supercomputers. This is a speed that is exciting for medicine, logistics and climate modeling. However it poses a threat to something most people would never think of – the encryption that secures their bank details, messages and passwords.
The awkward bit. The power of the quantum computer, estimated in the present, to break commonly used encryption techniques like RSA can be reduced from centuries to hours. Some scientists think that this may occur in the next 10 to 20 years. Others, however, think this could be sooner than the governments are prepared for. In either case the clock has already begun to tick.
What Makes Quantum Computers So Dangerous to Encryption
Traditional computers can process information expressed as bits (0 or 1). These quantum computers, which can be in multiple states simultaneously, are known as qubits. This allows them to access many numbers of possibilities at the same time. It is, however, a challenge to encryption – most of the present systems are based on the notion that there are some mathematical problems that can’t be solved on a standard computer.
However, a quantum computer would be able to solve these problems quickly and today’s “secure” connections are suddenly at risk. It’s not just for banks and governments.
However, this doesn’t mean all encryption systems are outdated or insecure. For example, VPN apps like VeePN use military-grade encryption. Theoretically, a quantum computer could crack the key, but it would take too long. Furthermore, you can use the VeePN Thailand service with double encryption, which is virtually uncrackable. At the very least, decrypting this data becomes unprofitable for everyone.
Quantum-Resistant Encryption: The New Race
Then what’s happening about it? A lot, actually. For years researchers have been working on a type of encryption, called quantum resistant encryption or post-quantum cryptography. These are mathematical techniques that are safe even if a quantum computer is used in a brute-force attack.
From that, US NIST released several algorithms in 2022 to be considered as future encryption standards. In 2024 formal standards were published. This was no idle idea. Major companies and banks are beginning to experiment with these new methods, and even messaging providers. It will not occur as quickly as everyone would like, however, as changing the internet’s cryptographic backbones takes time, money, and world-wide coordination.
Future Cybersecurity Standards Are Already Taking Shape
Governments and industry groups aren’t waiting around. A number of nations have issued roadmaps, mandating the use of quantum-safe encryption for critical infrastructure, such as power grids and financial systems, in the coming decade.Several countries have issued roadmaps that call for quantum-safe encryption for critical infrastructure, including power grids and the financial system, in the next decade. There are guidance given by the European Union, the United States and some of the Asian governments on this topic.
Here is a quick overview of the changes:
- Quantum-safe transactions are getting started in financial institutions.
- Hybrid encryption, a mix of old and new techniques, is being put to the test by browser makers
- Messaging platforms are subtly implementing post-quantum protocols.
- Cloud service providers are providing “crypto agility” tools to allow systems to rapidly switch algorithms.
This final aspect is very important. Crypto agility is the ability of a system not to be bound for eternity to one encryption method. When a mistake is found, or a quantum leap occurs, organisations can simply replace algorithms without having to re-build from the ground up. The algorithms themselves may not be as crucial as that flexibility.
Will Your Data Be Safe in 10 Years?
This is the question keeping cryptographers up at night. There’s a concept called “harvest now, decrypt later.” It means bad actors could be collecting encrypted data today, storing it, and waiting until quantum computers are powerful enough to crack it open later. Sensitive medical records, government secrets, and long-term financial data are particularly at risk under this scenario.
How Everyday Users Can Prepare
For most people, this all sounds abstract. What can a regular person actually do? The honest answer is: not much directly, since encryption upgrades happen at the software and infrastructure level. But staying informed and using updated tools matters more than people realize.
Keeping software updated is the simplest step, since security patches often include cryptographic improvements behind the scenes. Using reputable encryption tools also helps, even if they’re not quantum-proof yet. For instance, browser extensions like the free VPN for Chrome add a layer of encrypted browsing that can be switched or upgraded as standards evolve. Small habits like these won’t stop a future quantum attack on their own, but they keep your digital footprint smaller and your data fresher, which matters under the “harvest now, decrypt later” scenario.
Are We Ready? The Honest Answer
It’s not yet, but it is a fact of progress. First post-quantum algorithms have been released by standards bodies. Big tech firms are experimenting with hybrid solutions. Governments have established timelines, even if the timelines seem lofty.
The problem is: speed and coordination in smaller organisations. Big banks and tech companies can afford to adapt quickly. Local governments, small businesses, and individual developers may not have access to the resources or be as aware as others. The space between these could become a weak link in the system as security is frequently as weak as the weakest link.
A Realistic Timeline
The time of a quantum computer that has a cryptographically relevant application is unknown. The range of estimates is from as early as 2030 to as late as 2045. Some experts believe that it will actually never occur at the level that is feared, others believe that it will indeed happen.
Either way, the switch to quantum resistant encryption is underway; and that’s what’s important. Patience would be a bad idea, as major cryptographic conversions are slow. Even if everyone agrees that the change is needed, it could take a decade or more for the old encryption systems to be replaced by the new ones throughout the Internet.
Final Thoughts
Quantum computing isn’t going to break the internet overnight. But it’s reshaping how experts think about long-term security, and that shift is already influencing today’s tools, standards, and habits. From government policy to the apps on your phone, the quiet groundwork for a post-quantum world is being laid right now.
The question “are we ready?” doesn’t have a simple yes or no answer. We’re partly ready, moving in the right direction, but not finished. And in cybersecurity, that’s often the most honest answer there is.
