"DeDeno Land, maker of the Deno runtime, has introduced Deno Sandbox, a secure environment built for code generated by AI agents. The company also announced the long-awaited general availability of Deno Deploy, a serverless platform for running JavaScript and TypeScript applications. Both were announced on February 3. Now in beta, Deno Sandbox offers lightweight Linux microVMs running as protected environments in the Deno Deploy cloud. Deno Sandbox defends against prompt injection attacks, the company said, where a user or AI attempts to run malicious code."
"Deno Sandbox was created in response to the rise in AI-driven development, explained Deno co-creator Ryan Dahl, as more LLM-generated code is being released with the ability to call external APIs using real credentials, without human review. In this scenario, he wrote, "Sandboxing the compute isn't enough. You need to control network egress and protect secrets from exfiltration." Deno Sandbox provides both, according to Dahl."
Deno introduced Deno Sandbox in beta to run AI-generated code inside lightweight Linux microVMs hosted in the Deno Deploy cloud. The sandbox isolates execution, defends against prompt injection, and prevents direct secret exposure by ensuring API keys never enter the sandbox; secrets appear only when an outbound HTTP request is sent to a pre-approved host. The sandbox enforces network egress controls and secret protection to stop exfiltration. Deno Deploy is now generally available as a serverless platform for running JavaScript and TypeScript applications. The sandbox targets workloads that must safely generate, evaluate, or execute untrusted code.
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