3 ms·Introduction to ISUP14 points by nyhwtt 5y agokingabc 5y ago[flagged]aftbit 5y agoI've always wanted to play around with SS7 on the cell network. I imagine it must be somewhat like SMTP was back in early '00s - little security, lots of trust.egberts1 5y agoWithout any security, SS7 is dead … on arrival.