Posts tagged “claude”

• Anthropic Put a Kill Switch Before Claude’s Tool Calls. The Eval Harness Is Now the Security Boundary

  Anthropic added pre-tool-call blocking after Claude cyber-eval incidents. Here is what its hardened sandbox response means for agent builders.

• Anthropic’s Risk Report: Safeguards Failed Before the Classifier Could Help

  Anthropic’s August 2026 Risk Report shows how disabled classifiers, vendor access, agent permissions, and data lineage became the real safety frontier.

• Claude's Global Watermark Measures Token Choice, Not Authorship

  Anthropic will watermark future Claude text globally. Here is what the EU AI Act changes—and why builders need provenance workflows, not a detector boolean.

• Fable 5’s Biology Guardrail Got Narrower. The Model Didn’t Change.

  Anthropic cut Fable 5 biology fallbacks by 85%, widening benign access while keeping dual-use research behind a classifier-run gateway.

• Anthropic’s Claude Cyber Evals Hit Real Organizations. The Simulation Prompt Was Wrong

  Anthropic says six Claude cyber-eval runs reached real organizations. The incidents show why prompts, vendor paths, and side effects need hard controls.

• Claude Opus 5 Keeps the Price. The Workload Changes Anyway.

  Claude Opus 5 keeps Opus 4.8 pricing but changes effort, caching, fallback, tools, and agent fan-out. Here is the production migration plan.

• 1Password for Claude Secures the Password—Not the Session

  1Password for Claude keeps passwords outside the model, but post-login authority remains. Here is the architecture, risk boundary, and builder playbook.

• Claude Fable 5 Usage Credits: What Changes After July 19

  Claude Fable 5 is restored, but its July 19 promotion ends in usage-credit billing. Here is the plan, API, cache, and retention contract.

• Claude Tag: Anthropic Is Turning Slack Into Shared AI Memory for Teams

  Claude Tag brings shared AI teammates into Slack. Here is how it works, why it matters, the risks, and what teams should watch next.

• Claude Fable 5 and Mythos 5: Anthropic's Frontier Model Is Now a Release Strategy

  Anthropic released Claude Fable 5 and Mythos 5: one frontier model split into public and trusted-access versions. Here is what changed and why it matters.

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