SpaceComputer | Orbital Root of Trust

Space grade security guarantees are pivotal for the space Internet to materialize 📡🫡

For some applications, the most secure place to run a computer is where nobody can reach it. For others physical inaccessibility is the biggest limitation. We spend a lot of time thinking about these kinds of tradeoffs that come with building compute systems in orbit. On Earth, compute is abundant and trust is the hard part. Roughly 55% of data center security incidents come from the inside. In orbit - nobody can access the satellite, and therefore the physical attack surface is ≈0. In orbit, that same isolation means no repairs, radiation-constrained chips, and a power budget where one satellite roughly equals one GPU today. So which one do you build on? It depends on what applications you're building for and the level of in-depth security you need. If physical possession of the hardware is part of your threat model, orbit offers guarantees Earth can't match. If you need fast, large-scale compute, and your threat model is handled by conventional controls, Earth wins on practicality. (For now). So where do you sit on the tradeoffs of physical isolation and capabilities on Earth versus on orbit? Let us know in the comments 👇

At SpaceComputer, we look at our open infrastructure the way the internet once looked at Linux. Linux infrastructure is open, auditable, and vendor-neutral. That openness is why it’s the foundation of the internet: hyperscalers, competitors, and governments could all standardize on it, because trusting Linux never meant trusting a vendor. We're doing the same for the space internet. Our infrastructure design, Space Fabric, is built on open verification. We publish our tech stack and system design, and work with hardware partners like Tropic Square also take an open source approach. We incorporate Raspberry Pis into our infrastructure due to their exceptional interoperability across diverse applications. Linux was one of the biggest companies to build backbone level verifiable infrastructure into what it is today. The space internet needs the same foundation, and we're building it. Explore the solutions we offer now: https://lnkd.in/eiPikrHN

In public reporting alone, there's been a 118% surge in space-related cyber incidents from 2024 to 2025. And the attack pattern will shock you. Attacks often begin inside of trusted systems on Earth. Without end-to-end security and threat modelling, most companies are flying blind (literally) to attacks on their spacecraft. This begs the question: Which trust decisions across the Earth-to-orbit path can be independently verified, and what risks remain outside that evidence? In a critical analysis by Filip Rezabek and José Pedro Sousa, we see 10 threat scenarios across Earth to orbit, that can be solved by implementing a verifiable trust layer. Read the full threat model analysis here: https://lnkd.in/e5kUSxST 

More epic developments from our amazing dev team at SpaceComputer: José Pedro Sousa developed Spacebase, visualizing how SpaceComputer infra works in orbit! Test it out: https://lnkd.in/eksfh6Ks Let us know what you think in the comments!👇

Today at 2pm PT! Join us and the legend Dr. David Livingston for a deep dive into space infra you don't want to miss! 🔊🛰️ https://lnkd.in/gGpbcSXe