Addressing the enormous gap in IoT compliance and certification, the well-known Underwriters Laboratory (UL) operates an IoT certification regimen (see https://industries.ul.com/cybersecurity).
Based on its UL 2900 series of assurance requirements, the process involves a thorough examination of a product's security. UL intends the process to be used by and tailored for a broad cross-section of industries, from consumer smart home appliances all the way to critical infrastructure (for example, energy, utilities, and healthcare).