# Microsoft Execution Containers Are GA: Sandbox Your AI Agents Now > Source: > Published: 2026-10-24 04:07:27+00:00 October 2026 has been a rough month for AI agent security. GitSpawn let untrusted git repos silently execute code inside Claude Code, Codex, Cursor, and Grok — bypassing both sandboxes and approval dialogs entirely. A compromised LiteLLM release hit an estimated 23 million weekly downloads before PyPI quarantined it. And 82% of enterprises discovered AI agents running in their environment that nobody had authorized. If you’re still relying on your agent to police itself, October 2026 is your wake-up call. Microsoft’s answer — Microsoft Execution Containers (MXC) — went generally available on October 7. The premise is simple: an agent […] The post