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Each layer catches different attack classes. A namespace escape inside gVisor reaches the Sentry, not the host kernel. A seccomp bypass hits the Sentry’s syscall implementation, which is itself sandboxed. Privilege escalation is blocked by dropping privileges. Persistent state leakage between jobs is prevented by ephemeral tmpfs with atomic unmount cleanup.
soup = BeautifulSoup(html, "html.parser")，这一点在快连下载安装中也有详细论述
│ visibility │ syscall │ separate │ hardware │ no kernel