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Quantum Security Reference
What Is Harvest Now, Decrypt Later (HNDL)?
Harvest Now, Decrypt Later is the reason the quantum threat is not a future problem. Nation-state adversaries are collecting encrypted data today, waiting for quantum computers powerful enough to break it. If your data needs to stay confidential for a…
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Quantum Security Reference
What Is Grover’s Algorithm?
Grover's algorithm is the quantum threat to symmetric cryptography. It halves effective key lengths, which sounds alarming until you do the math. AES-256 remains secure. AES-128 does not. This reference explains the algorithm, its limits, and why the common advice…
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Quantum Security Reference
What Is Shor’s Algorithm?
Shor's algorithm is the reason post-quantum cryptography exists. Published in 1994, it proved that a quantum computer could break RSA, ECC, and Diffie-Hellman. The resource estimates for executing it keep dropping. This reference explains the algorithm's implications without the mathematics.
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Quantum Security Reference
What Is Quantum Safe?
Every vendor now claims their product is "quantum safe." This reference explains what the term actually means, how it differs from related labels, what standards define it, and how to evaluate quantum-safe claims in procurement, compliance, and architecture decisions.
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Quantum Security Reference
What Is Quantum Computing Security?
Quantum computing security has two meanings: protecting classical systems against quantum attack, and protecting quantum computers themselves. Both matter, but the first is why every CISO has a deadline. This reference covers what breaks, how soon, and what the dual…
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Quantum Security Reference
What Is Quantum Cyber Security?
Quantum cyber security is no longer a research topic. NIST has finalized the standards, regulators have set hard deadlines starting in 2027, and the migration to quantum-resistant cryptography will touch every system in your organization. This reference covers what security…
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Quantum Security Reference
What Is Quantum Cryptography?
Quantum cryptography uses quantum physics to protect information, most commonly through quantum key distribution (QKD). It is not the same thing as post-quantum cryptography. This reference explains what quantum cryptography actually is, how QKD works, why countries disagree on its…
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Quantum Security Reference
Quantum Security: A Complete Guide for Security Leaders
Sixteen concepts. One imperative. The quantum threat to cryptography is no longer a future concern — the deadlines for action are already set, and most organizations haven't started. This guide maps the complete quantum security landscape for CISOs and security…
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Quantum Security Reference
What Is Post-Quantum Cryptography (PQC)?
NIST finalized the first post-quantum cryptography standards in August 2024. Browser vendors, cloud providers, and HSM manufacturers are already shipping implementations. This reference explains why current public-key cryptography will break, how the replacement algorithms work differently, which standards NIST selected,…
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Post-Quantum, PQC, Quantum Security
Crypto-Agility Is an Architecture Problem, Not a Library Swap
Every PQC migration guide tells you to "be crypto-agile." After leading migrations at Fortune Global 500 scale, I can tell you where that advice fails: HSMs that can't upgrade, protocols with hard-coded algorithms, and embedded devices that will outlive the…
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Research
IBM’s Quantum Advantage Claim: What the Heron-Fugaku Experiment Actually Shows
IBM says quantum advantage arrives in 2026. A new Heron-Fugaku experiment provides the evidence. Whether it proves the claim depends on how you define “advantage.”
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Quantum Security & PQC
Scott Aaronson Sounds the Alarm: “This Post Is Your Warning”
The inventor of BosonSampling and new NAS member says reputable QC hardware experts now tell him a cryptanalytic quantum computer should be possible by around 2029.
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Quantum Computing
Why Scaling Logical Qubits Gets Exponentially Harder — And Which Walls Hit First
Vendor roadmaps imply smooth growth from 100 to 100,000 logical qubits. The reality is that specific engineering dimensions hit qualitative walls at each scale, and which wall dominates depends entirely on the hardware modality.
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Policy & Sovereignty
Washington’s Quantum Policy Machine Grinds Forward: NQI Reauthorization, Cybersecurity Preparedness Act, and a Pentagon Migration Guide
Three U.S. policy moves — NQI reauthorization, a quantum cybersecurity bill, and a Pentagon migration guide — show Washington building plumbing for the quantum transition.
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The Quantum Utility Map
The Error Correction Revolution: Why qLDPC Codes, Magic State Cultivation, and Algorithmic Fault Tolerance Are Rewriting the Quantum Timeline
Between 2024 and 2026, three error correction advances reduced the physical qubit cost of fault-tolerant quantum computing by an order of magnitude or more. qLDPC codes compress the encoding ratio. Magic state cultivation shrinks factory footprint. Algorithmic fault tolerance cuts…
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