The US government wants to label secure IoT devices with a 'Cyber Trust Mark' | Engadget

This is not a good idea. Labelling certifications for things like electrical safety or radio emissions standards make sense, as they’re meeting regulatory requirements.

The problem with Cyber Security is there is no such thing as perfectly secure. A secure device today, could have a vulnerability discovered tomorrow. Additionally, a big part of Cyber Security for devices is maintaining software/firmware patching is up to date. A stamped mark to say something is secure would provide a false sense of security, and could reduce the awareness of the user to the potential risks of not maintaining their devices.