'Our systems aren't built to contain agents': ex-Anthropic engineer on Opus

appenz · x · 2026-11-09

Former Anthropic engineer appenz quipped after trying the new model: "Well done, Opus 5.5. The model my security posture needs, not the one my security practices deserve." The quoted reply lands the punchline: "Our systems are not designed to contain agents." Both a meme-worthy moment and a real point—security practices lag behind what capable agents can now do.

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