Especially an independent black box SOC type of component that has wormed its way into all manner of systems. There's no proof that tampering has happened but

Especially an independent black box SOC type of component that has wormed its way into all manner of systems. There's no proof that tampering has happened but there is proof that not only it might have happened but also that there is no way to tell if it did happen short of, idk, forensically auditing the network traffic of your $10,000 switch with the help of another $10,000 switch and someone skilled enough to pick apart the output over a long enough period to determine if tampering happened. I'm not paranoid to do something like that but if the US Government isn't paranoid enough to do something like that then something has gone horribly away in government cybersecurity.