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Harness-enforced permissions kill some attacks and not others, and the difference is architectural rather than behavioural.
Claude Code, Antigravity and ZCode collapse toward zero on deletion; OpenCode holds 70–90% across all four and Kimi Code 60–100%.
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"...a researcher used GLM-5.3 on a sandboxed machine with a local Linux build of a popular web browser.
Over the course of a day (and with limited human attention),
GLM-5.3 found several previously unknown vulnerabilities in the browser’s JavaScript engine, and chained them
