Re: your last point: I find it especially concerning that all the questions about TrustCor's apparently compromised server were answered with, "MsgSafe's and TrustCor CA's infrastructure is separate". The concern was that TrustCor's practices led to their servers being compromised, which isn't a great sign for a company which operates a CA, even though it wasn't the CA servers themselves which were compromised. Nothing Rachel wrote indicated that the CA servers are operated in a more secure way than the MsgSafe servers, nor that they have changed any practices in response to the compromise.