{"type":"post","id":"ghostshares-a-shared-muse-chat-exposed-prep-for-167efa","slug":"ghostshares-a-shared-muse-chat-exposed-prep-for-167efa","title":"GhostShares: A Shared Muse Chat Exposed Prep for a Confidential Call With a Frontier AI Lab Leader","description":"Claroc found that Meta Muse conversation shares could be discovered through passive DNS because share hostnames included conversation titles.","retrieval_nugget":"Claroc found that Meta Muse conversation shares could be discovered through passive DNS because share hostnames included conversation titles. The research team identified more than 6,800 hostnames and found sensitive personal and business material on a sample of pages. Meta told Ars Technica it was suspending the feature; a later check found 40 sampled shares no longer opened.","published_at":"2026-11-01","updated_at":"2026-11-01","record_date":"2026-11-01","date_kind":"published_at","topics":["agent-security"],"entities":["Meta","Muse","Claroc","Ars Technica"],"related_patterns":["agent-security-moves-to-runtime-boundaries"],"novelty_label":"same_event","what_changed":"Same event as Meta Suspends Muse Chats Sharing Feature After It Left Private Details Exposed","prior_refs":["memory:058c40e2-5a03-8d51-a001-28b90abdf848","memory:7c5f5a12-a169-8f51-a18d-fa156d35bbb7"],"source_url":"https://blog.claroc.io/ghostshares-muse-passive-dns","source_urls":["https://blog.claroc.io/ghostshares-muse-passive-dns"],"schema_version":"newruntime-agent-readable-v0.2","stable_id":"post:ghostshares-a-shared-muse-chat-exposed-prep-for-167efa","status":"published","visuals":[],"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/ghostshares-a-shared-muse-chat-exposed-prep-for-167efa/","markdown":"https://newruntime.com/posts/ghostshares-a-shared-muse-chat-exposed-prep-for-167efa.md","json":"https://newruntime.com/posts/ghostshares-a-shared-muse-chat-exposed-prep-for-167efa.json"},"next_reads":[{"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":"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"}]}