# CYSEC

> CYSEC is a European cybersecurity company building sovereign products for satellites, space infrastructure, and trusted ground compute. Its product line, ARCA Trusted OS, ARCA SATLINK, and ARCA SATCOM, secures workloads end to end across ground segment and space segment.

For a richer machine readable version with full FAQ content, see [llms-full.txt](https://www.cysec.com/llms-full.txt).

## Products

- [ARCA Trusted OS](https://www.cysec.com/arca-trusted-os): Hardened Linux based operating system for confidential virtual machines on AMD SEV-SNP and Intel TDX, with self hosted attestation and full disk encryption.
- [ARCA SATLINK](https://www.cysec.com/arca-satlink): First commercial implementation of the CCSDS Space Data Link Security (SDLS) protocol. Encryption, authentication, OTAR key management, and replay protection for telemetry and telecommand. Validated in orbit on ESA OPS-SAT in October 2023.
- [ARCA SATCOM](https://www.cysec.com/arca-satcom): Secure satellite communications stack for ground segment and on board deployments.

## Company

- [About CYSEC](https://www.cysec.com/about): Mission, leadership, and Swiss and European footprint.
- [CYSEC Labs](https://www.cysec.com/cysec-labs): Applied research in confidential computing and space cybersecurity.
- [Partners](https://www.cysec.com/partners): Industrial and institutional partners across the space and trusted compute ecosystems.
- [News](https://www.cysec.com/news): Announcements, press, and product updates.
- [Careers](https://www.cysec.com/careers): Open roles in Switzerland and across Europe.
- [Contact](https://www.cysec.com/contact): Sales and partnership inquiries.

## Key Technical Facts

- ARCA Trusted OS supports AMD SEV-SNP (EPYC Milan and newer) and Intel TDX trusted execution environments.
- Self hosted ARCA Verification Manager handles remote attestation and disk encryption key release. No SaaS dependency.
- Supported platforms: Microsoft Azure Confidential Compute, Broadcom vSphere v9 (VCF 9.0), Proxmox with CYSEC attestation support.
- Performance overhead under AMD SEV-SNP typically below 5%.
- ARCA SATLINK binary footprint: 230 KB, RAM under 50 KB, NVM under 100 KB, 1 to 2% CPU under peak load, 30 byte per frame overhead.
- FPGA acceleration up to 10 Gbps on Xilinx Zynq 7000 family.
- CCSDS protocols supported: TM, TC, AOS, USLP, plus SDLS-EP.

## Standards & Compliance

- CCSDS Space Data Link Security (SDLS) Blue Book.
- Post quantum cryptography ready, modular cryptographic backend.
- FIPS 140-2 compatible via integrated HSMs and FIPS certified libraries (for example WolfSSL).
- Aligned with French Space Law, NIS2, the Cyber Resilience Act, and the upcoming EU Space Act.