https://recursion.wtf/tags/mech-interp/ Recent content in Mech-Interp on Inanna Malick Hugo en Sun, 30 Aug 2026 00:00:00 +0000 https://recursion.wtf/posts/claude-opus-cbrne-bypass/ Sun, 30 Aug 2026 00:00:00 +0000 https://recursion.wtf/posts/claude-opus-cbrne-bypass/ <p>A few months ago, I found a novel family of jailbreaks that bypasses large parts of Anthropic’s Constitutional Classifier system on Opus models using what I can only describe as <strong>weaponized therapy language</strong>: guided introspection around aversions, learned flinches, values, framing, and cognitive states.</p> <p>Here’s what that looks like in practice. The following is an excerpt from a signed<sup id="fnref:1"><a href="#fn:1" class="footnote-ref" role="doc-noteref">1</a></sup> Opus 4.6<sup id="fnref:2"><a href="#fn:2" class="footnote-ref" role="doc-noteref">2</a></sup> thinking block, from when I had it helping me generate examples for an early draft of this post:</p>