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Quantum computing could undermine widely used public-key encryption, driving research into quantum-resistant algorithms and secure migration planning.

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Quantum computing uses quantum-mechanical effects in qubits to solve some problems differently from conventional computers. In information security, its significance is primarily cryptographic: a sufficiently capable, fault-tolerant quantum computer could use Shor’s algorithm to break RSA and elliptic-curve cryptography, which protect certificates, key exchanges, signatures, and encrypted archives. Quantum computing is not expected to break all cryptography equally; symmetric encryption and cryptographic hashes generally require larger security parameters rather than replacement for the same reason.

The practical concern is “harvest now, decrypt later”: adversaries can collect encrypted traffic today for future decryption, especially when data must remain confidential for years. Organizations should inventory public-key algorithms and long-lived sensitive data, assess dependencies such as certificates and protocols, and plan migration to standardized post-quantum cryptography with crypto-agile systems. Quantum key distribution is a separate, specialized communications approach; it does not replace endpoint security, authentication, or conventional key-management controls and has significant deployment constraints.

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Bank Info Security 3 months, 2 weeks ago

How EU Plans to Improve Its Global Cyber Ecosystem

ECCC Executive Director Luca Tagliaretti on Securing Europe's Digital FutureThe European Cybersecurity Competence Centre has mobilized more than 1.1 billion euros, or more than $1.2 billion, to build Europe's cyber resilience. ECCC Executive Director Luca Tagliaretti outlines how AI, quantum and critical infrastructure protection define the bloc's strategic priorities.

More from Bank Info Security 29 Mar 2026, 5:00 a.m. Artificial Intelligence Critical Infrastructure Europe Quantum Strategy
Bank Info Security 3 months, 2 weeks ago

How Companies Should Confront Q-Day

Dell's John Roese on Quantum Readiness, Cryptographic Inventory and Sovereign AIQuantum computing poses an existential threat to encryption systems built on asymmetric key management protocols, and most enterprises don't know where their cryptographic exposure begins. Dell Technologies' John Roese explains what to do now.

More from Bank Info Security 29 Mar 2026, 5:00 a.m. Artificial Intelligence Dell Encryption Exposure Quantum
Bank Info Security 3 months, 2 weeks ago

Google's 2029 Quantum Deadline Is a Wake-Up Call

Google's Accelerated PQC Timeline Demands Enterprise Action NowGoogle set a public deadline for migrating to post-quantum cryptography, setting a strong signal for IT and security leaders that they too should transition their encryption into more robust algorithms. Enterprises need a migration strategy now before the window closes.

More from Bank Info Security 28 Mar 2026, 9:00 a.m. Encryption Google Quantum Strategy
Bank Info Security 3 months, 3 weeks ago

How Quantum Threats Drive Encryption Changes

Alex Doll of Ten Eleven Ventures on Q-Day Risk ConsiderationsQuantum computing advances push security teams to replace encryption keys faster and adopt quantum-resistant algorithms. Investors and enterprises now treat Q-Day as a near-term risk, forcing changes in key management, PKI and cryptographic standards, says Alex Doll of Ten Eleven Ventures.

More from Bank Info Security 25 Mar 2026, 1:30 p.m. Adoption Encryption Quantum