How soon are quantum computers expected to threaten current encryption?

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Quantum computers are anticipated to pose a threat to current encryption within the next 10 to 15 years.

Quantum computers capable of breaking widely used encryption methods are expected to emerge within the next decade to fifteen years, although this projected timeline could potentially shorten. The advent of such technology presents significant risks to the financial sector, impacting customer confidentiality, inter-peer communications, authentication processes, and the reliability of digital signatures. Financial institutions are being urged to proactively assess their cryptographic standards and develop transition plans.
Assessment of Quantum Threat Timeline

The Quantum Safe Financial Forum, a body established by Europol, has indicated that the development of quantum computers powerful enough to compromise current encryption is likely within a 10 to 15-year timeframe. This forecast acknowledges the possibility of an accelerated development, meaning the threat could materialise sooner than initially estimated. This projected timeline underscores the need for timely preparation within the financial industry.
Implications for the Financial Sector

The potential capabilities of quantum computers raise concerns for the financial industry regarding the protection of sensitive data. Risks include the compromise of customer confidentiality, security of peer-to-peer communications, and the integrity of authentication systems. Furthermore, the security of digital signatures, crucial for verifying the authenticity of transactions and documents, could also be jeopardised.
Recommended Actions for Financial Institutions

The forum's primary recommendation is for financial institutions to commence an evaluation of their existing cryptographic standards. This involves identifying which standards are vulnerable to quantum attacks and which are considered quantum-secure. Based on this assessment, institutions should formulate a strategic plan to transition their operations to quantum-resistant technologies.
Anticipation of Future Exploitation

A significant warning issued by the forum is the consideration that malicious actors may already be collecting and storing sensitive data. This data could then be decrypted once sufficiently powerful quantum computers become available. This highlights the urgency for financial entities to implement protective measures, especially as the US government has set a 2035 deadline for federal agencies to achieve "quantum resistance."

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How soon are quantum computers expected to threaten current encryption?

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