Quantum computing threat demands urgent CISO action plan

The rise of quantum computing is increasingly posing a challenge to modern encryption systems, a development that Chief Information Security Officers (CISOs) can no longer afford to ignore.

Quantum computing threatens to disrupt the cryptographic protocols that have safeguarded digital information for decades.

Current encryption methods, such as RSA and ECC, are based on the computational limits of classical computers, meaning they take years or even decades to crack.

However, quantum algorithms like Shor's could vastly reduce the time required to decrypt data, turning what was once secure into vulnerabilities. According to CISA, "harvest now, decrypt later" strategies have already been adopted by malicious actors who are collecting encrypted data in anticipation of future quantum decryption abilities.

JayaPrakash, CEO at Borderless CS, stated, "Quantum computing will redefine what it means to keep data secure. The organisations that act today, not when quantum arrives, will be the ones trusted tomorrow." This emphasises the urgency for CISOs to reassess and future-proof their organisations' encryption strategies against quantum threats.

Globally, efforts are underway to address these emerging challenges.

The National Institute of Standards and Technology (NIST) took a significant step forward by selecting four algorithms for post-quantum cryptography standardisation in 2022, including CRYSTALS Kyber for key establishment and CRYSTALS Dilithium for digital signatures.

Both algorithms utilise lattice-based cryptography and represent a foundational shift in protecting data against quantum attacks.

In Australia, cybersecurity specialists like Borderless CS are calling for proactive measures in quantum readiness.

These include preparing clients for cryptographic transitions and assisting in developing resilient data protection strategies in collaboration with local councils and enterprises. Such efforts underscore the need for immediate action towards quantum preparedness.

To guide CISOs, a strategic playbook for achieving quantum-safe encryption has been outlined. This includes conducting comprehensive cryptographic audits to identify critical data confidentiality requirements, designing systems for crypto agility to facilitate smooth transitions in cryptographic algorithms, and ensuring the engagement of supply chains and vendors in adopting post-quantum standards.

Furthermore, staying informed on developments from NIST's Post-Quantum Cryptography Project and CISA's quantum security resources is essential. These offer guidance and implementation roadmaps crucial for navigating the quantum cryptographic landscape.

Upskilling teams and integrating post-quantum security into organisational risk discussions is also vital. Educating executives, boards, and staff on the significance of quantum threats will bolster internal readiness and decision-making processes.

Beyond meeting compliance requirements, quantum preparedness will play a critical role in building brand trust, offering competitive differentiation, and ensuring operational resilience. Organisations that actively engage with expert partners, conduct impact assessments, and deploy hybrid cryptography solutions will likely fare better as the quantum computing age unfolds.

The imperative for CISOs is clear: becoming quantum-safe is a strategic journey that demands a coordinated effort across teams, investment in robust infrastructure, and the formulation of a comprehensive transition roadmap.

The evolving cybersecurity landscape requires CISOs to not only defend current digital infrastructures but to preemptively navigate future challenges posed by quantum technologies.