Well, yes and no to the telco core networks. I’m sure you know but for the record - getting access to the SS7 outside telecom companies is easy and fairly affor

Well, yes and no to the telco core networks. I’m sure you know but for the record - getting access to the SS7 outside telecom companies is easy and fairly affordable (15-20k€/month). That and voice/sms services (vs. e2e encrypted data over virtual networks) grants access to SS7 exploits one under the threat model discussed earlier would want to protect against.