>because only they have the private key to do so So when the system that contains the key is hacked and the key is exfiltrated? Or if an insider steals or leak

>because only they have the private key to do so So when the system that contains the key is hacked and the key is exfiltrated? Or if an insider steals or leaks the key? The effin NSA couldn't keep their most well guarded secrets from the Shadow Brokers and from Snowden, there isn't an entity on the planet we should trust with such key.