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Luu, T.J.

Quoting Claude Opus 5 system prompt

infonewsLLM-Specific

safety

Source: Simon Willison's WeblogAugust 9, 2026

Summary

Claude Opus 5's system prompt (the underlying instructions that guide how the AI behaves) includes a notice about export control suspensions that affected two Claude models in June 2026. The prompt instructs Claude to acknowledge these events accurately if asked, treat the topic fairly like any other current event, and direct users to Anthropic's official statement for more details.

Classification

Attack SophisticationTrivial

AI Component TargetedModel

Affected Vendors

Anthropic

Related Issues

info

Secure AI agent access patterns to AWS resources using Model Context Protocol

Same vendorAWS Security Blog

high

Anthropic accuses Chinese AI labs of mining Claude as US debates AI chip exports

Same vendorTechCrunch

Monthly digest — independent AI security research

Original source: https://simonwillison.net/2026/Aug/9/claude-opus-5-system-prompt/

First tracked: August 12, 2026 at 08:00 PM

Classified by LLM (prompt v3) · confidence: 85%