Quantum Computing and the Looming Threat to Cybersecurity

Zuber Lawler

Quantum computing, once a realm of academic exploration, has now transitioned into tangible commercial opportunities, ushering in a wave of optimism and concern in equal measure. While quantum computing promises transformative leaps in computing power, it also poses a significant threat to cybersecurity. The implications of granting cyber attackers access to quantum computers are akin to giving a powerful sports car to an inexperienced driver. This article delves into the security risks posed by quantum computers, the detection of quantum cyberattacks, and the measures organizations must take to protect their data in this new era of computing.

The Quantum Threat

Colin Soutar, a managing director at Deloitte & Touche and US cyber quantum readiness leader, forewarns that it’s not a matter of if, but when quantum computers become a significant danger to cybersecurity. Adversaries are already targeting organizations through Harvest Now-Decrypt Later (HNDL) attacks, which involve stealing sensitive data with the intent to decrypt it once quantum computers become widely available.

The threat lies in Shor’s algorithm, which, when executed on scalable quantum computers, can render public key encryption vulnerable. Factoring problems that are currently challenging to solve will no longer be a barrier, enabling attackers to determine secret-keys from public-keys and potentially impersonate legitimate parties.

Quantum Cyberattack Detection

A quantum cyberattack is likely to resemble today’s identity theft and data breaches but on a much larger scale. Eric Chitambar, an associate professor of electrical and computer engineering at the University of Illinois Urbana-Champaign, notes that quantum computers can target a broad range of encryption algorithms, making the damage more widespread. Recognizing such attacks and protecting access to sensitive data are crucial.

Preventative Measures

To stay ahead of quantum attackers, organizations must transition to “quantum-safe” encryption methods, which are resistant to quantum attacks. Alternatively, they can explore using quantum computers for secure data transmission, employing known quantum methods for communication.

Torsten Staab, chief innovation officer at Raytheon, emphasizes the importance of developing quantum-resistant security strategies and recommends conducting quantum risk assessments to identify vulnerable systems. Enterprise-wide Quantum Random Number Generator (QRNG) technology can generate quantum-resistant encryption keys, enabling crypto agility and the implementation of Quantum Key Distribution (QKD) and quantum-resistant algorithms.

The Cryptographic Community’s Response

The cryptographic community has been working on addressing quantum threats through Post Quantum Cryptography (PQC). PQC involves applying more complex mathematics to public key encryption, making it resilient even against quantum computers. The advantage of PQC is that it can be implemented on widely deployed hardware, similar to current public key systems.

Challenges for the Insurance Industry

The advent of quantum computing introduces challenges for the insurance industry. With the uncertain timeline for quantum computer development, accurately assessing risk for pricing and capital requirements becomes difficult. Assessments need to be made regarding industries, data, and potential loss values under a quantum scenario. Additionally, changes may be needed in data standards, exclusions, and coverage requirements.

Increased demand for cyber insurance is expected, prompting insurers to educate businesses about the potential risks associated with quantum computing. Collaboration with quantum computing, cryptography, and cybersecurity experts is essential.

Quantum Computing’s Potential Benefits

Despite the looming threats, quantum computing isn’t all bad news for cybersecurity. Quantum computing holds potential in privacy and encryption methods. Privacy-enhancing computing (PEC) techniques and homomorphic encryption offer avenues for enhanced data protection and secure processing of encrypted data.

Preparing for Quantum Computing

Companies need to take proactive steps to prepare for the quantum era. Learning how quantum will affect their businesses, taking inventory of current encryption methods, and understanding the shelf life of data are important steps. Lengthening encryption keys and considering exposure time can provide temporary safeguards. It’s crucial to monitor developments in quantum computing and transition to newer, safer encryption standards when necessary.

Quantum computing poses a formidable challenge to cybersecurity, requiring organizations to adapt and innovate to protect sensitive data. While the threat is real, so are the opportunities for those who can stay ahead of the curve. Cybersecurity professionals and businesses must collaborate, adapt, and remain vigilant to safeguard our increasingly data-dependent world from the potential threats of quantum computing.



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