minerstat msOS before 2019-10-23 does not have a unique SSH key for each instance of the product.Referenceshttps://github.com/minerstat/minerstat-os/commit/487ebd652dc9dc81120809effb2ddb3f66fc5f14https://rsaxvc.net/blog/2020/4/10/Widespread_re-use_of_SSH_Host_Keys_in_Ethereum_Mining_Rig_Operating_Systems.html
