The quantum threat is approaching: what is “Q Day” and why are banks so concerned? [Spanish]

Author: Silvia Cabrero Díez | Source: Computer Hoy | Read the full article in Spanish

In the rapidly evolving digital landscape, a potential technological threat looms on the horizon that could fundamentally transform cybersecurity: quantum computing. Financial institutions and security experts are increasingly concerned about what's being called the "Q Day" – a theoretical moment when quantum computers become powerful enough to break current encryption methods, potentially exposing millions of personal and financial transactions to unprecedented vulnerability.

The core of this concern lies in the immense computational power of quantum computers, which could theoretically crack encryption systems that currently protect everything from bank accounts to email communications. Unlike traditional computers, quantum computers can perform complex mathematical calculations at speeds that render existing security protocols obsolete. This means that data encrypted today could potentially be decrypted in the near future, creating a significant risk for organizations and individuals alike.

To combat this emerging threat, cybersecurity professionals are developing new strategies like post-quantum cryptography (PQC) and exploring quantum key distribution technologies. These innovative approaches aim to create encryption methods resilient to quantum computing attacks. Financial institutions, governments, and tech companies are already mapping out long-term data protection strategies, recognizing that preparing for this technological shift is not just a technical challenge, but a critical strategic imperative to maintain digital security and protect sensitive information.

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