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smolvm Brings Hardware-Isolated Sandboxing for AI Code Execution

smolvm Brings Hardware-Isolated Sandboxing for AI Code Execution

FIRST LOOK ATLAS OWASP LOW Limited impact · Standard review ▲ 6.2 Simon Willison

smolmachines/smolvm 1.8.3 provides hardware-isolated VM sandboxing for untrusted Python and JavaScript, with enforced CPU/RAM limits, no-network execution, filesystem quotas, and cold starts under 1.5 seconds. For defenders building AI platforms that execute user-supplied or LLM-generated code, this closes the critical gap between shared-kernel container isolation and true VM-level isolation for data transformation workloads. Residual maturity questions remain around orchestration integration, audit logging depth, and the KVM dependency that excludes nested-virtualisation environments like many CI and cloud agent runtimes.

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