Safety critical systems are rarely wholly reliant on GNSS, but related services that are otherwise independent may have GNSS as a common point of failure. Should users of GNSS or third parties be able to claim compensation for damage suffered from reliance on malfunctioning GNSS systems? This question is a subject of international discussion, particularly for the European Union’s Galileo, the only GNSS under civil control with a commercial service subject to usage fees and based on contractual relations through the service chain.