Quantum computing’s looming threat to encryption spurs urgent migration push

Fresh reporting from Bloomberg and The Wall Street Journal this week underscores the tension at the heart of quantum computing: the same technology that promises to revolutionize drug discovery, materials science, and artificial intelligence could shatter the cryptographic foundations protecting global communications. The dual-edged nature of the field — dazzling in its scientific ambition, alarming in its security implications — is forcing governments and enterprises to accelerate preparations for a post-quantum world.bloomberg+1

The Encryption Problem

Quantum computers exploit the physics of subatomic particles to solve certain mathematical problems exponentially faster than classical machines. The threat to cybersecurity centers on Shor's algorithm, which would allow a sufficiently powerful quantum computer to break RSA and elliptic-curve cryptography — the backbone of internet encryption — in minutes rather than millennia. Google Alphabet Inc. ↘ 1.68% has warned that quantum machines may be able to crack some encrypted systems by 2029, a timeline far tighter than many security professionals had anticipated.cnn+2

Compounding the urgency is the "harvest now, decrypt later" strategy, in which adversaries record encrypted data today with the expectation of decrypting it once quantum hardware matures. Data with long confidentiality lifetimes — diplomatic cables, health records, defense communications — is already at risk from this approach, even though no cryptographically relevant quantum computer yet exists.postquantum.wiki

The Race to Quantum-Safe Standards

The National Institute of Standards and Technology has been leading the global response. NIST finalized its first three post-quantum cryptography standards — FIPS 203 (ML-KEM), FIPS 204 (ML-DSA), and FIPS 205 (SLH-DSA) — in August 2024, and is encouraging system administrators to begin migrating immediately. A draft transition roadmap, NIST IR 8547, proposes deprecating 112-bit classical key-establishment schemes after 2030 and disallowing all quantum-vulnerable algorithms after 2035, aligning with National Security Memorandum 10's deadline for federal systems.NIST+3

In July 2026, a separate development rattled the community: Anthropic disclosed that it used an AI model to find a vulnerability in HAWK, a candidate digital-signature algorithm under NIST evaluation. HAWK's developers withdrew it from consideration, though NIST stressed that its finalized standards remain unaffected.NIST

What Comes Next

As Bloomberg's feature details, the quantum industry itself remains in an early, uncertain phase — machines must be chilled to temperatures colder than outer space, and fault-tolerant systems capable of running Shor's algorithm at scale do not yet exist. But the reporting from both outlets this week reinforces a consensus among cybersecurity leaders: the time to act is now, not when the threat materializes. Federal agencies alone are expected to spend more than $7 billion on the transition to post-quantum cryptography, and private-sector organizations face mounting pressure to inventory their cryptographic assets and begin migration planning before the window closes.securityweek+1