WISeKey is a Swiss cybersecurity and authentication company that designs and commercializes post-quantum cryptography semiconductors, digital identity infrastructure, and satellite-based secure communications. The company operates primarily as a fabless semiconductor manufacturer of secure microcontrollers and custom ASICs, complemented by public key infrastructure services, blockchain-enabled IoT transaction platforms, and a digital certificate marketplace for authenticating artworks and digital assets. Its customers include major industrial technology companies and global enterprises across automotive, smart homes, critical infrastructure, and healthcare sectors, with a revenue model dominated by secure chip sales, alongside engineering services and licensing income.