Aug 23, 2026 · 28 min
Space Computer designs trust into orbital networks
Building a secure space internet. [T-Minus: Space-Cyber Briefing]
Long-lived spacecraft need hardware-rooted security, upgradeable defenses, and post-quantum planning before interoperable space infrastructure becomes commonplace.
- 1Space Fabric uses hardware-isolated secure elements and trusted execution to let multiple parties share spacecraft resources securely.
- 2Hardware-backed cryptographic attestation provides stronger proof of running software than conventional software-based measurement alone.
- 3Signed firmware updates and post-quantum planning aim to keep spacecraft secure across long development and deployment timelines.
Don't miss
Filip Rezabek connects long spacecraft lifetimes to the need for post-quantum cryptography and signed upgrades designed before launch.
The brief
Maria Varmazis speaks with Filip Rezabek, co-founder and CTO of Space Computer, about the security architecture needed for a trustworthy space internet.
Space Fabric replaces the one-user-per-payload model with shared spacecraft resources protected by physically isolated secure elements and trusted execution environments.
Rezabek explains why hardware-backed attestation matters: cryptographic keys can provide proof of what software is running, rather than relying only on software measurements.
Because spacecraft may operate for decades, Space Fabric pairs hardware security with signed, verifiable firmware updates and planning for post-quantum cryptography.
The broader vision is an interoperable orbital network: shared infrastructure that connects previously isolated systems while preserving trust between users and machines.
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