Australia-Securing-Space-Cyber-Security-for-Low-Earth-Orbit-Satellite-Communications-2026.md

### Executive summary This guidance from Australian and allied authoring agencies describes cyber security risks and mitigation strategies for Low Earth Orbit (LEO) satellite communications, covering threats such as jamming, spoofing, unauthorized command injection, supply-chain compromise and cross-border data sovereignty issues; it provides recommended controls across the space, ground and user segments (encryption, authentication, anti-jam techniques, Zero Trust, SBOM/HBOM, PQC planning), and a set of practical questions organisations should ask LEO SATCOM service providers.