6 stories
Show: Summaries / Headlines only
Are the qubits physical or logical? Is there a paper, and who checked it? A reader can judge a quantum computing announcement with seven questions, each shown here with a 2026 case and the document that answers it.
NIST, the NSA, Britain's NCSC, the EU, Canada, and Australia all ask organizations to start post-quantum migration now. None claims a code-breaking quantum computer exists or gives it a known date. Their deadlines do not depend on either claim.
Absolute promises, theorems without their conditions, quantum in a product's name, and post-quantum labels without an algorithm or certificate recur in security pitches. Each can be checked against a public standard, certificate, agency assessment, or proof.
Regulators in five countries have acted or warned against products sold on the word "quantum." Generic claims about real technology get case-by-case scrutiny at most. Companies with real results face the same independent tests as everyone else.
A passive copy of encrypted traffic taken from a cable, radio link, or satellite beam leaves nothing on the victim's network. Tools marketed against harvest-now, decrypt-later attacks watch for exfiltration, anomalous traffic, or quantum-vulnerable encryption instead.
Shannon proved in 1949 that perfect secrecy for arbitrary data needs a random key at least as long as the data, used once. A product sold as perfectly secret with a shorter or reused key fails that test.
