The Sentry intercepts the untrusted code’s syscalls and handles them in user-space. It reimplements around 200 Linux syscalls in Go, which is enough to run most applications. When the Sentry actually needs to interact with the host to read a file, it makes its own highly restricted set of roughly 70 host syscalls. This is not just a smaller filter on the same surface; it is a completely different surface. The failure mode changes significantly. An attacker must first find a bug in gVisor’s Go implementation of a syscall to compromise the Sentry process, and then find a way to escape from the Sentry to the host using only those limited host syscalls.
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这套门槛会具体化为可检查的控制项:红队测试、持续监控、版本管理、权限隔离、审计日志、回滚机制。它们不再是合规装饰,而是保险公司把黑箱风险切成可定价敞口的证据链。定价权也随之迁移,过去保费主要由行业经验与历史损失率驱动,现在费率与额度更像由你能证明什么驱动。没有证据链,就只能拿到更窄的承保范围、更低的子限额、更高的免赔,甚至被排除在外。。业内人士推荐夫子作为进阶阅读
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