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An Introduction to Quantum Cybersecurity
 

A large-scale quantum computer, exponentially faster than a classical computer, will have infinite uses whenever complicated problems or systems must be emulated. Unfortunately, this power will also be available to break the encryption systems that we use today. 
The negative impacts of quantum computing are of great concern. Cyberattacks, data theft, and breakdown of information systems and infrastructure have the potential to completely disrupt all commonly secure data. The World Economic Forum predicts that globally, over 20 billion digital devices will be impacted and need upgrade or replacement in the next two decades to remain safe from quantum cyberattacks (source in QED-C).

Leading experts agree that quantum cybersecurity will soon become mainstream and will be one of the critical pillars of a robust cybersecurity strategy for most organizations. Rather than waiting for quantum computing to allow the breakdown of our information infrastructure, QuintessenceLabs is now harnessing quantum physics’ power to protect cryptography. The solutions to transition to quantum-resilient infrastructure will include post-quantum cryptography (PQC) and quantum key distribution (CV-QKD).

HNDL Attacks Have Begun
 

The risk is very high for those targeted by state-sponsored adversaries. Although stolen data tends to have a limited shelf life, some may be useful for a state adversary more than a decade in the future. The “harvest-now, decrypt-later” scenario is a grave risk to stolen private data. The practice applies to data and the encryption keys that protect it. The data holds future value, assuming that quantum computers will decrypt and readily expose the information in seconds. This potential theft of fundamental pharmaceutical, chemical, and material science research would be exploited for use in quantum-assisted simulations.

Take Action: Extend Your Encryption Post-Quantum
 

To remedy this issue, the QuintessenceLabs true quantum random number generator (QRNG) qStream™ provides encryption keys with full entropy (i.e., that are truly random). These keys are derived from a quantum source that is unpredictable by nature and are of the highest quality. 
The qStream™ QRNG delivers random numbers for the generation of cryptographic keys and other security parameters, deterministic RNG seeding, initialization vectors, nonces, random challenges, authentication, and DSA signing. Other applications include Entropy as a Service (EaaS), simulations, modeling, and computer gaming.

Resources

REPORT

Australian Quantum Technology Industry report 2025

WHITEPAPER

WERULE Wins Government Contract with Apollo Secure’s

REPORT

Quantum technologies: Key strategies for Financial Services

VIDEO

From Quantum Revolution to Quantum Resilience

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