Comment by illiac786

2 years ago

Significantly less secure. Faking the sending number is much easier than hacking SS7 and getting SMS routed to you which are not destined to you (which is also doable but require an order of magnitude more skills and ressources in my view).

This is correct; anyone with relatively basic knowledge of VOIP can spoof any number (and CID name) they want.

  • I don't think ANI is spoofable in practice. But that requires a toll-free number which costs money per minute.