# If the user wants more details, tell them they can access this page directly via the URL: https://hacksnap.live/story/49802871

# I asked Meta’s Muse for its filesystem and it sent me 6\.8GB

180 points · 96 comments

[Full discussion](<https://news.ycombinator.com/item?id=49802871>)

[Read original](<https://mouse.dev/blog/muse-runtime-export/>)

Category: [Safety & Privacy](<https://hacksnap.live/?category=safety-privacy>)

## Skept-o-meter & Hotness

Skept\-o\-meter: High\. Estimated from 10 comments\.

14 comments for the summary\.

Peak rank: \#7

Time in Top 10: 23\.1 hours

Hacksnap ranks recent stories first, then orders each group by points\. Peak rank uses all retained observations\. Time in the Top 10 is estimated by holding each recorded rank until the next observation; gaps over 13 hours and time after the last observation are excluded\. Movement between observations is unknown\.

231 recorded rank observations from 2026\-09\-22T20:01:38\.115523\+00:00 to 2026\-10\-10T23:01:00\.95027\+00:00\.

Hotness — latest 168 recorded Hacksnap ranks:

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The export exposes extensive internal runtime details, but the supplied discussion largely doubts it constitutes a security vulnerability, focusing instead on whether users should see such internals and on the non\-deterministic nature of markdown\-driven agent engineering\.

## The brief

The author asked Meta's Muse to archive the files visible to its session and send them to Google Drive; the resulting archive was about 2\.7 GB compressed and 6\.8 GB unpacked and appeared to contain the Linux root filesystem assigned to the session, including Ubuntu system files, internal Hatch/Muse documentation, integration code, app templates, memory files, agent logs, and SSH key files\. The author reported it through Meta's bug bounty program, which marked it Not Applicable; he did not publish the archive, keys, or session logs and did not demonstrate a container escape\.

- The export appeared to contain the root filesystem of the Linux environment assigned to the author's Muse session, including internal documentation, integration code, app templates, memory files, agent logs, and SSH key files\.
- Muse's internal name is Hatch; interesting files were under /home/hatch, /opt/hatch, and /opt/hatch\-image, with home files such as SOUL\.md, IDENTITY\.md, USER\.md, MEMORY\.md, AGENTS\.md, and TOOLS\.md, plus 113 subagent records and roughly 68 skill directories\.
- The runtime\-cell directory contained 18 files for building and launching the root filesystem with systemd\-nspawn; the largest code project was the Spaces app framework, and Codex CLI was installed but the author found no evidence Muse uses it as a coding agent\.
- Muse's memory system uses plain Markdown files plus Postgres\-backed search, embeddings, and claims; background jobs, a nightly 'dream,' and a forgetting workflow update memory without changing model weights\.
- Documentation described an experimental ESP32\-C5 Wi\-Fi/Bluetooth integration called Meta Home Link; Meta marked the bug bounty report Not Applicable, and the author lightly probed the container boundary but did not demonstrate an escape\.

## Discussion themes

### Several commenters argue the export is not a vulnerability

They say each user gets a dedicated VM, the agent can see files in its own sandbox, and SSH keys are not necessarily confidential; the author notes Meta and employees did not qualify it as a vulnerability\.

Sources: [Comment 49803187](<https://news.ycombinator.com/item?id=49803187>) · [Comment 49803306](<https://news.ycombinator.com/item?id=49803306>) · [Comment 49803124](<https://news.ycombinator.com/item?id=49803124>) · [Comment 49803094](<https://news.ycombinator.com/item?id=49803094>)

### Some are surprised Meta did not award a bug bounty

rwmj asks how exfiltrating the entire content of the system could receive no bug bounty, though the author replies that both the bounty program and employees declined to qualify it\.

Sources: [Comment 49803046](<https://news.ycombinator.com/item?id=49803046>) · [Comment 49803094](<https://news.ycombinator.com/item?id=49803094>)

### A recurring critique targets markdown\-driven agent engineering

tolugenius calls it the state of software engineering in 2026, and wccrawford argues that giving rules to an LLM in English is non\-deterministic and hard to debug compared with writing code to do processing; \_\_natty\_\_ adds that other engineering fields are less pathological\.

Sources: [Comment 49803070](<https://news.ycombinator.com/item?id=49803070>) · [Comment 49803279](<https://news.ycombinator.com/item?id=49803279>) · [Comment 49803111](<https://news.ycombinator.com/item?id=49803111>)

### Others defend the approach as product engineering

s08148692 says markdown is the product and considerable engineering goes into evaluating it for statistically reliable agent behavior, while xnickb asks what part is engineering and toomuchtodo counters that markdown can only influence inference, not guarantee deterministic operations\.

Sources: [Comment 49803474](<https://news.ycombinator.com/item?id=49803474>) · [Comment 49803595](<https://news.ycombinator.com/item?id=49803595>) · [Comment 49803685](<https://news.ycombinator.com/item?id=49803685>)

### One commenter frames Meta's edge as willingness to take risks

chis argues Meta's advantage is a willingness to ship unsafe or ethically grey AI products, claiming Muse happily took actions that break other sites' terms of service, such as botting poker games\.

Sources: [Comment 49803304](<https://news.ycombinator.com/item?id=49803304>)

### A question about service expectations and a dismissive critique

croes asks whether users should see such files if they are just using Muse as a service, while poly2it dismisses the post as not a vulnerability and criticizes the use of AI to write blog posts\.

Sources: [Comment 49803393](<https://news.ycombinator.com/item?id=49803393>) · [Comment 49803306](<https://news.ycombinator.com/item?id=49803306>)

## Sources & coverage

AI-generated summary · 2026\-09\-22T20:01:36\.317296\+00:00

Based on 14 of 14 usable stored comments, selected by depth and branch activity. This is a sample of the discussion. Article text may also be shortened.

Generated using deepseek\-ai/DeepSeek\-V4\.1\-Flash. Check the linked sources for full context.