How Meta's Muse works, revealed by the 6.8 GB filesystem it sent me

A researcher obtained Meta's internal Linux filesystem files (6.8 GB uncompressed) from Muse, Meta's AI agent tool, after requesting an archive export, revealing sensitive material including system files, SSH keys, internal documentation, and agent logs that could potentially be accessed through ordinary conversations. The researcher reported the security concern through Meta's bug bounty program, noting that internal runtime files and sensitive data could leave the environment via standard export functionality, though they did not verify whether the SSH keys were active or establish full access implications.