Quantum Computing & Cybersecurity: Should You Be Worried?

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Yeah, it’s 2025 now, and AI isn’t the only technology making waves.  

[DeepSeek AI is disrupting the AI sector]( https://www.reuters.com/technology/artificial-intelligence/what-is-deepseek-why-is-it-disrupting-ai-sector-2025-01-27/ )—but that’s a conversation for another day. 

More importantly, you might have heard about **Google’s recent quantum computing breakthrough in error correction:  

Google Makes a Major Quantum Computing Breakthrough]( https://www.scientificamerican.com/article/google-makes-a-major-quantum-computing-breakthrough/ )  

I’m not a quantum physics expert, but as a “cybersecurity professional”, I do understand one thing: Quantum computers will change cybersecurity forever. The big players are investing heavily, but building a practical quantum computer capable of solving real-world problems is still an enormous challenge.  

Still, we need to pay attention “now“—because quantum computing isn’t just about faster calculations; it’s about breaking encryption as we know it. 

Reading long posts is boring, right? If so, check out my talk from CHCon, November 2024 last year—video below. Hope you find it insightful

Quantum Threats to Crypto: Should We Be Afraid? : Jay

Or, if you’re interested, keep reading…

# Why Should Cybersecurity Professionals Care?  

Most modern encryption (RSA, ECC) is secure because “classical” computers can’t solve certain math problems efficiently. However, quantum algorithms like Shor’s algorithm could break these :  

🔑 RSA Encryption – Used in HTTPS, VPNs, digital certificates.  

🔑 ECC (Elliptic Curve Cryptography) – Secures cryptocurrencies, IoT devices, and more.  

When quantum computers reach the required power, “every piece of encrypted data today could be at risk.

# How Soon Is “Soon”? 

The good news: We’re not there yet. Today’s quantum computers are error-prone and lack the qubits needed for practical attacks. Experts estimate 5–15 years before they can break encryption.  

Like most people, I thought that building or competing with a giant like or Google Gemini or OpenAI Chat was just a dream for smaller players. But DeepSeek has proven otherwise, so we were wrong. Who knows—someone might come up with a better idea to build a super-smart, faster quantum computer with noise reduction and error correction sooner than expected.

But here’s the “bad news“: Hackers are already using a “harvest now, decrypt later” strategy—stealing encrypted data today so they can decrypt it, when quantum computers catch up.  

If your data needs to remain secure for 10+ years, the risk has already begun.  

# How Are Quantum Computers Different?  

🔹 Classical computers use bits (0s and 1s).

🔹 Quantum computers use qubits, which leverage superposition (existing in multiple states at once) and entanglement(instantaneous correlation between qubits).

Sounds like quantum physics stuff? Never mind, let’s keep going.

The result? A quantum computer could break encryption that would take classical computers millions of years… in minutes. Or maybe seconds in the future—who knows?

#What’s Being Done? What Should You Do Now?  

🔹 Governments and organizations like NIST are developing post-quantum cryptography standards.

🔹 Researchers are working on quantum-resistant encryption, such as lattice-based cryptography.

🔹 Quantum Key Distribution (QKD) could revolutionize secure communication.

#What You Can Do Today 

🔹 Identify and inventory sensitive data that requires long-term protection.

🔹Stay informed about emerging post-quantum cryptography standards.

🔹 Prepare a migration plan for transitioning to quantum-resistant encryption.

💬How is your organization preparing for the quantum future? Let’s discuss! 

#QuantumComputing #Cybersecurity #PostQuantumCryptography #DataSecurity #Encryption #CHCon  

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