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Beyond Q-Day Hype: What the Latest Quantum Cryptanalysis Preprint Reveals
The quantum computing debate often devolves into speculative "Q-Day" panic. However, a recent arXiv preprint (arXiv:2608.23785) shifts the conversation from vague warnings to a parameterised, data-driven framework. By evaluating physical qubit scaling, error-correction overhead, and algorithm efficiencies, the study establishes concrete timelines for classical cryptographic collapse and post-quantum migration. The 3-Tier Risk Hierarchy: Separating Fact from Speculation The re
Brian Couzens
Aug 272 min read


Daniel Simon’s Dihedral Coset Algorithm: What Does It Actually Mean for Lattice-Based Cryptography and PQC?
A new preliminary paper from Daniel R. Simon has generated exactly the sort of reaction that serious cryptographic research does not need. “Another horror for lattice-based cryptography.” “This is the end for PQC.” Neither statement is an adequate description of what has actually been published. The paper is potentially extremely important. It is also a preliminary research result, and the distinction matters. Simon’s paper, “A Polynomial-Time Quantum Algorithm for the Dihedr
Brian Couzens
Aug 95 min read


Cryptanalysis: Let Me Explain This FFS
The sensational headlines surrounding Anthropic’s AI work on HAWK reveal a fundamental misunderstanding of how global cybersecurity actually operates: cryptanalysis is not a panic event; it is the continuous quality-control engine of the digital world. The framing that "AI broke post-quantum security and everything is collapsing" is pure noise. Here is the reality. 1. This Is an Ongoing Discipline Run by Dedicated Teams Cryptanalysis isn't something that happens once in a blu
Brian Couzens
Aug 12 min read


Q-Day or Not Q-Day
Forecasting the First Practical RSA Compromise: A Scenario-Based Monte Carlo Assessment SITG-Consulting Strategic Forecasting Laboratory Research Note & Methodology Brief 1. Introduction – Why the Question Is Different Every few weeks, a new prediction emerges regarding the arrival of cryptographically relevant quantum computing. Some analysts predict an operational machine within five years; others argue it will take twenty years or longer. Most of these forecasts share a fu
Brian Couzens
Jul 235 min read


Myths v Facts: Quantum Computing, PQC, Q-Day & Bitcoin
I am increasingly seeing across LinkedIn, GitHub, arXiv, Zenodo and so many other repositories a flurry of poorly written nonsense on these subjects. Let’s be entirely clear, the empirical and governance realities do not match the hype. These are the global facts: 𝐓𝐡𝐞 𝐏𝐐𝐂 𝐒𝐢𝐥𝐯𝐞𝐫 𝐁𝐮𝐥𝐥𝐞𝐭 Myth: "PQC is the definitive solution." Truth: Post-Quantum Cryptography (PQC) is one component within a full cryptographic transformation. Global authorities, including CISA,
Brian Couzens
Jun 192 min read
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