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MixedClaude · 1 Nov 2026

Hypervisor interactions trigger immediate “cyber” response, it’s impossible to work with Opus 5.5 doing anything low-level with custom or third-party devices

leobuskin on Hacker News

In the thread “Anthropic blocks users for anything touching training larger models”, replying to this comment

Helped: Using 4.8 instead of 5.5 for low-level device work.

Got in the way: Opus 5.5 triggering immediate cyber response on hypervisor tasks.

… But I observe the same “cyber” issues working with Linux kernel and drivers as people who went through CVP/T1 (which is wild, to be honest). Hypervisor interactions trigger immediate “cyber” response, it’s impossible to work with Opus 5.5 doing anything low-level with custom or third-party devices. Only 4.8 can assist, and it’s a huge difference in code quality and approaches. …