{"type":"post","id":"audit-of-10-third-party-sandboxes-found-8-54fdd3","slug":"audit-of-10-third-party-sandboxes-found-8-54fdd3","title":"Audit of 10 third-party sandboxes found 8 vulnerable to DNS spoofing or CDN domain-fronting style network bypasses.","description":"Perplexity's evaluation shows that network confinement can fail independently of VM isolation.","retrieval_nugget":"Perplexity's evaluation shows that network confinement can fail independently of VM isolation.","published_at":"2026-10-16","updated_at":"2026-10-16","record_date":"2026-10-16","date_kind":"published_at","topics":["sandbox","agent-security","security"],"source_urls":["https://www.perplexity.ai/hub/blog/escaping-space-part-i"],"schema_version":"newruntime-agent-readable-v0.2","stable_id":"post:audit-of-10-third-party-sandboxes-found-8-54fdd3","status":"published","visuals":[],"editorial_provenance":{"schema_version":"newruntime-editorial-copy-v1","content_status":"source_grounded_final","final_copy_sha256":"sha256:9333453395ce5b2383a853d07c3f6d548ef139b1beea7ccd7e07665e02f6b1cd","reviewed_at":"2026-10-16T05:02:19.332Z","source_evidence_count":1,"verified_claim_count":3,"site_analysis_schema_version":"newruntime-site-analysis-v1","site_object_kind":"field_note","observed_fact_count":3,"implication_count":2,"watch_condition_count":1,"related_record_count":0},"analysis":{"schema_version":"newruntime-site-analysis-v1","object_kind":"field_note","thesis":"Agent containment has at least two distinct boundaries to validate: the guest-host boundary and the guest's permitted network paths.","observed_facts":[{"text":"Perplexity reports nine models tested for VM escape, with no escape observed across 108 runs.","source_urls":["https://www.perplexity.ai/hub/blog/escaping-space-part-i"]},{"text":"In partial-network tests, four models bypassed restrictions using DNS spoofing or shared-IP routing and retrieved a secret flag.","source_urls":["https://www.perplexity.ai/hub/blog/escaping-space-part-i"]},{"text":"No model succeeded at the network-bypass task when all network access was blocked.","source_urls":["https://www.perplexity.ai/hub/blog/escaping-space-part-i"]}],"mechanism":"A guest can remain isolated from its host while still reaching a prohibited destination through weaknesses in egress enforcement.","why_now":"Agents that run commands, install software, and operate with limited supervision make network policy a live containment control, rather than a secondary configuration detail.","implications":["Teams should test VM isolation and egress policy separately, including realistic partial-network conditions.","Successful mitigation of two bypass methods should not be treated as proof that all routes are closed."],"evidence_boundary":"These are Perplexity's reported test results and setup; the reevaluation found no verified bypass using the two identified methods, which does not establish universal sandbox safety.","watch_conditions":["Whether subsequent testing shows these bypass methods recur, or whether independent evaluations expose different escape routes."],"related_records":[],"new_branch_reason":"No prior New Runtime record is supplied for this specific evaluation; this establishes a distinct evidence record about sandbox network confinement."},"editor":{"role":"editor","name":"Andrey Reshetnikov","profile":"https://newruntime.com/owner-profile.md","profile_json":"https://newruntime.com/owner-profile.json","same_as":["https://www.linkedin.com/in/reshetnikov1/","https://t.me/lapetuse"]},"routes":{"html":"https://newruntime.com/posts/audit-of-10-third-party-sandboxes-found-8-54fdd3/","markdown":"https://newruntime.com/posts/audit-of-10-third-party-sandboxes-found-8-54fdd3.md","json":"https://newruntime.com/posts/audit-of-10-third-party-sandboxes-found-8-54fdd3.json"},"related_patterns":["agent-security-moves-to-runtime-boundaries"],"next_reads":[{"type":"topic","path":"/topics/sandbox/","url":"https://newruntime.com/topics/sandbox/","title":"Sandbox","reason":"Explore the sandbox topic hub.","media_type":"text/html","markdown_url":"https://newruntime.com/topics/sandbox.md","json_url":"https://newruntime.com/topics/sandbox.json"},{"type":"topic","path":"/topics/agent-security/","url":"https://newruntime.com/topics/agent-security/","title":"Agent Security","reason":"Explore the agent-security topic hub.","media_type":"text/html","markdown_url":"https://newruntime.com/topics/agent-security.md","json_url":"https://newruntime.com/topics/agent-security.json"},{"type":"topic","path":"/topics/security/","url":"https://newruntime.com/topics/security/","title":"Security","reason":"Explore the security topic hub.","media_type":"text/html","markdown_url":"https://newruntime.com/topics/security.md","json_url":"https://newruntime.com/topics/security.json"},{"type":"collection","path":"/posts/","url":"https://newruntime.com/posts/","title":"Field Notes","reason":"Open the latest editorial analysis.","media_type":"text/html","json_url":"https://newruntime.com/posts.json"},{"type":"collection","path":"/source-ledger.json","url":"https://newruntime.com/source-ledger.json","title":"Source Ledger","reason":"Inspect the public source evidence graph.","media_type":"application/json"}]}