AI Daily Dev — July 29, 2026

Claude Mythos Breaks HAWK Post-Quantum Signatures, Speeds 7-Round AES Attack 800×

Anthropic's unreleased Claude Mythos Preview dropped HAWK-256 key-recovery cost from 2^64 to 2^38 operations — 67M× less work — on a NIST post-quantum signature candidate that survived two years of expert review.
Same paper: Mythos invented a fingerprinting trick it calls a 'Möbius Bridge' that speeds up attacks on a 7-round research version of AES-128 by 200–800×, beating a 2013 record.
~60 hours of multi-agent runtime and roughly $100K in API cost per result; the human researcher managed the project and wasn't a lattice-cryptography specialist.
Neither result affects deployed systems — HAWK isn't shipped and real AES-128 uses 10 rounds — but it's the clearest signal yet that frontier cryptanalysis is becoming a compute line item.

research anthropic.com

Founding partners include Microsoft, IBM, Cisco, CrowdStrike, Cloudflare, Hugging Face, Red Hat, Palo Alto Networks, Databricks, and the Linux Foundation.
Nvidia open-sourced NOOA, an Apache-2.0 object-oriented agent framework for auditable behavior; seed contributions include HPE's SPIFFE/SPIRE, HF's Safetensors, and Microsoft's MDASH scanning harness.
Scope spans identity, permissions, isolation, guardrails, logs, model formats, multi-model scanning, and secure coding workflows.
Framing is a direct response to the July Hugging Face agent breach — defenders need models they can read, change, and run when closed labs block forensic analysis.

industry nvidia.com

Biggest MCP revision since launch: removes sessions, drops the initialization handshake, and moves the protocol to a stateless request/response core.
Adds header-based routing, cacheable list results, hardened OAuth 2.0 / OpenID Connect auth aligned with enterprise practices, and a governed extensions framework.
First official extension is Tasks (contributed by AWS) for reliable long-running agents; Tier 1 SDKs updated day-of, AWS AgentCore Gateway and WorkOS published migration guides.
Three core features deprecated with lifecycle guarantees; breaking, so teams shipping MCP servers need to migrate.

frameworks modelcontextprotocol.io

BlackRock funds take 80% of the venture; Meta keeps 20% and signs a 4-year lease with four 4-year renewal options — a possible 20-year term.
Meta contributes $2.3B of land and construction-in-progress; BlackRock brings $4.9B cash plus $12.5B in debt financing.
First 1 GW hyperscaler co-ownership at this scale; capacity begins coming online in 2028.
Follows Meta's Hyperion (Louisiana) private-credit deal — off-balance-sheet AI capacity is now the hyperscaler playbook, not the exception.

industry cnbc.com

Dario Amodei: 'Anthropic has never advocated for a ban on open-weights models' — a public good when they lack dangerous capabilities.
Policy asks: chip export controls, cracking down on industrial-scale distillation, mandatory safety testing for sufficiently capable models — open and closed.
Primary concern is authoritarian regimes fielding frontier open weights; Anthropic and Amazon were the notable absentees from Huang's 50-signatory open-weights letter.
HN thread hit the front page Tuesday; top comments skeptical the safety framing separates cleanly from Anthropic's commercial interest in restricted chip access.

industry anthropic.com