Post-Quantum
PostQuantum.com by Marin Ivezic – Quantum Security, PQC, Quantum Resistance, CRQC, Q-Day, Y2Q
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Risk-Driven Strategies for Quantum Readiness When Full Crypto Inventory Isn’t Feasible
Given the practical challenges, organizations may need to begin their quantum-readiness journey with a risk-driven approach rather than a theoretically perfect one. The essence of this strategy is to focus limited resources where they matter most – addressing the highest quantum-vulnerability risks first and implementing interim safeguards for the rest.…
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What is the Quantum Threat? A Guide for C‑Suite Executives and Boards
Boards do not need to dive into the scientific intricacies of qubits and algorithms, but they do need to recognize that this is a strategically important risk – one that can’t be simply delegated away. It requires the same level of governance attention as other enterprise-level risks like financial compliance,…
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How CISOs Can Use Quantum Readiness to Secure Bigger Budgets (and Fix Today’s Problems)
Quantum readiness is not an exercise in science fiction – it’s a very practical program that yields benefits immediately. Regulators are pushing us all in this direction, which means boards are willing to fund it. The journey forces you to finally catalog your cryptographic assets and clean up long-standing weaknesses,…
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Quantum Readiness / PQC Migration Is The Largest, Most Complex IT/OT Overhaul Ever – So Why Wait?
Preparing for the quantum era is arguably the largest and most complicated digital infrastructure overhaul in history. Yes, far bigger than Y2K, because back in 1999 we didn’t have millions of network-connected “things” to worry about. Yet despite clear warnings and rapidly approaching milestones, far too many organizations still treat…
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Q-Day Revisited – RSA-2048 Broken by 2030: Detailed Analysis
It’s time to mark a controversial date on the calendar: 2030 is the year RSA-2048 will be broken by a quantum computer. That’s my bold prediction, and I don’t make it lightly. In cybersecurity circles, the countdown to “Q-Day” or Y2Q (the day a cryptographically relevant quantum computer cracks our…
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Cryptographic Inventory Vendors and Methodologies
Achieving a comprehensive cryptographic inventory often requires combining multiple tools and methodologies. Each solution above has blind spots: one might excel at catching code-level issues but miss network usage, another might see network traffic but miss dormant code, etc. Organizations starting a crypto inventory (especially as part of PQC readiness)…
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The Enormous Energy Cost of Breaking RSA‑2048 with Quantum Computers
The energy requirements for breaking RSA-2048 with a quantum computer underscore how different the post-quantum threat is from conventional hacking. It’s not just about qubits and math; it’s about megawatts, cooling systems, and power grids. Today, that reality means only the most potent actors would even contemplate such attacks, and…
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Breaking RSA Encryption: Quantum Hype Meets Reality (2022–2025)
To put it plainly, if you encrypted a message with an RSA-2048 public key today, no one on Earth knows how to factor it with currently available technology, even if they threw every quantum computer and supercomputer we have at the task. That may change in the future – perhaps…
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Quantum Key Distribution (QKD) 101: A Guide for Cybersecurity Professionals
Quantum Key Distribution (QKD) is a cutting-edge security technology that leverages quantum physics to enable two parties to share secret encryption keys with unprecedented security guarantees. Unlike classical key exchange methods whose security rests on computational assumptions, QKD’s security is rooted in the laws of physics – any eavesdropping attempt…
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Adiabatic Quantum (AQC) and Cyber (2024 Update)
Adiabatic Quantum Computing (AQC) is an alternative paradigm that uses an analog process based on the quantum adiabatic theorem. Instead of discrete gate operations, AQC involves slowly evolving a quantum system’s Hamiltonian such that it remains in its lowest-energy (ground) state, effectively “computing” the solution as the system’s final state.…
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Quantum Hacking: Cybersecurity of Quantum Systems
While these machines are not yet widespread, it is never too early to consider their cybersecurity. As quantum computing moves into cloud platforms and multi-user environments, attackers will undoubtedly seek ways to exploit them.
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Post-Quantum Cryptography (PQC) Meets Quantum AI (QAI)
Post-Quantum Cryptography (PQC) and Quantum Artificial Intelligence (QAI) are converging fields at the forefront of cybersecurity. PQC aims to develop cryptographic algorithms that can withstand attacks by quantum computers, while QAI explores the use of quantum computing and AI to both break and bolster cryptographic systems.
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Cryptographic Bill of Materials (CBOM) Deep-Dive
Cryptographic Bill of Materials (CBOM) represent the next evolution in software transparency and security risk management. As we have explored, a CBOM provides deep visibility into an application’s cryptographic underpinnings – an area that has often been opaque to security teams. By enumerating algorithms, keys, certificates, and their usage, CBOMs…
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How to Perform a Comprehensive Quantum Readiness Cryptographic Inventory
A cryptographic inventory is essentially a complete map of all cryptography used in an organization’s systems – and it is vital for understanding quantum-vulnerable assets and planning remediation. In theory it sounds straightforward: “list all your cryptography.” In practice, however, building a full cryptographic inventory is an extremely complex, lengthy…
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4,099 Qubits: The Myth and Reality of Breaking RSA-2048 with Quantum Computers
4,099 is the widely cited number of quantum bits one would need to factor a 2048-bit RSA key using Shor’s algorithm – in other words, the notional threshold at which a quantum computer could crack one of today’s most common encryption standards. The claim has an alluring simplicity: if we…
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