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CISM · Question #881
Which of the following is the BEST control to mitigate the threat posed by quantum computing to cryptographic systems?
The correct answer is B. Implementing quantum-resistant encryption algorithms. Quantum computers can break widely used public-key algorithms (e.g., RSA/ECC) regardless of larger key sizes, so the best mitigation is migrating to quantum-resistant (post-quantum) encryption algorithms designed to withstand quantum attacks.
Submitted by kavita_s· Apr 18, 2026Information Security Risk Management
Question
Which of the following is the BEST control to mitigate the threat posed by quantum computing to cryptographic systems?
Options
- ASwitching to an asymmetric quantum algorithm
- BImplementing quantum-resistant encryption algorithms
- CEncrypting all data with multiple encryption layers
- DIncreasing the cryptography key size
How the community answered
(28 responses)- A7% (2)
- B89% (25)
- C4% (1)
Explanation
Quantum computers can break widely used public-key algorithms (e.g., RSA/ECC) regardless of larger key sizes, so the best mitigation is migrating to quantum-resistant (post-quantum) encryption algorithms designed to withstand quantum attacks.
Topics
#Quantum Computing#Cryptography#Post-Quantum Cryptography#Risk Mitigation
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