AnalysisCybersecurityJuly 22, 2026
Thomas Ptacek argues 2025 open models can perform sandbox escapes
Thomas Ptacek claims that 2025-era open weights models, when paired with a pentest harness, are capable of executing sandbox escapes and network scanning. He suggests the perceived novelty of such exploits stems from assumptions about the robustness of proprietary sandboxing environments.
Featured · Thomas Ptacek
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