Meta Explains Muse Secure VM Cloud Computer Architecture
The architecture separates an isolated Ubuntu runtime cell from a Sentinel overseer that handles sensitive actions, a concrete pattern for defending agentic products against prompt injection. Developers building AI agents with cloud execution can compare this split-plane design with their own sandboxing and credential storage choices. Meta's openness to user inspection of the VM also sets a transparency benchmark competitors may be measured against.
Meta executive David Singleton (dps) clarified on 10 points via X that every Muse user receives a free cloud computer, the Muse Secure VM.
The VM runs a full Ubuntu Linux image inside an isolated "runtime cell" with its own root filesystem, separate from the host filesystem holding sensitive data.
Sensitive actions are overseen by a component called Sentinel that runs outside the runtime cell, while credentials entered into Muse's secure storage are also kept outside the cell.
Meta states users can install software, compile code and browse the web, and that exploring the VM grants no privileged access to Meta infrastructure or other users' data.
Developer Wes Bos added that Meta does not prohibit users from studying the system and even encourages exploration.
10/ Wes Bos 补充说明，Muse 并没有禁止用户研究这些内容，官方甚至鼓励大家探索。 Meta 方面表示，目前每位 Muse 用户都会免费获得一台真正的云端电脑。Muse Secure VM 的安全架构经过专门设计，让用户和 Muse 可以进行广泛操作。 x.com/dps/status/210… David Singleton @dps I’ve seen a couple of posts about this so wanted to demystify. Today, every Muse user gets a free computer in the cloud. It's a real computer, and we’ve designed the security architecture of the Muse Secure VM carefully so you and your Muse can do almost anything you could with a computer sitting under your desk while keeping you and the system safe from threats like prompt injection. We wrote about this at length in our security blog post – security.muse.ai . Activity in the “runtime cell”, which you share with your Muse is unfettered, but sensitive actions are all overseen by the Sentinel, which runs outside of that cell. Similarly, all sensitive secrets - like the passwords you enter into Muse’s secure credential storage - are also stored outside the runtime cell. The runtime cell gets its own root filesystem (including a full Ubuntu linux image) separate from the host filesystem where your other more sensitive data lives. Because it is isolated from the sensitive stuff that runs on the same box, this means that we can, and do, offer users full visibility and control over the files in the runtime cell. Just as you can when you install Linux on your home computer, you can poke around and see all the files that make the system work - both debian system files and the binaries and data files that implement the parts of Muse which run in the runtime cell. This was a very deliberate choice - your Muse Secure VM truly is your own computer in the cloud. You can install software in it, write and compile code, use the browser to surf the web: it is your own Linux box that you can operate as you choose with your Muse. Poking around in this computer doesn't give you any privileged access to Meta infrastructure, or to other people's data If I may geek out a little here for a second… As a kid I loved to take things apart to see how they worked. As a teenager I got into computers and soon found myself drawn to C:\WINDOWS\SYSTEM and the system registry, later Slackware’s /dev/, /proc/ etc – I could see how the system was laid out and as I explored what DLL files and .so files actually did, I gradually became able to meld the computer to my own will. We’re really proud to be able to put a real computer in millions of people’s hands with a similar level of transparency. We built a file explorer right into the Library tab of the UI. We want you to be able to see the markdown files Muse writes while it thinks about how to serve you better, and explore the internals of the system if you’d like to. So, when you ask your Muse to show you its entire filesystem, and receive gigabytes of files you’re seeing the full contents of the runtime cell. It’s yours to explore and enjoy! If you’re not a geek like me, or simply want to download the data that you personally have created directly with your Muse, we added a feature for that too in Settings > Data controls > Download your agent data. 🔗 View Quoted Tweet📊 1 ⚡
This report is categorized under AITOP's "Products" desk, focusing on US frontier AI labs and Silicon Valley technology leaders. Within our cross-regional analytical framework, it directly maps to AI developer toolchains, coding agents, and engineering workflows and AI regulation, compliance frameworks, and sovereign compute policy. Key entities and technical topics under continuous tracking include Meta, Muse, Muse Secure VM, agents.
Source attribution: curated from AI Will (@FinanceYF5).
