Your phone number is becoming the online identifier of choice
blog.messagebird.com> Hacking someone’s phone number is almost impossible to do, as someone would need to steal the physical SIM card or clone it at least. An almost impossible venture for the majority of fraudsters.
Wiretapping/redirecting SMS is actually surprisingly easy and doesn't require stealing/cloning SIM cards. Not sure how it compares to wiretapping unencrypted IP networks, but based on a demo I saw today I would guess it's easier.
You you could also just trick the phone company into forwarding the voicemail to another phone number.
http://www.securityweek.com/exclusive-google-two-factor-auth...
Any link with more info to that demo? It sounds interesting.
Demo was in RL, hence no link. Search for SS7/MSC attacks for more info.
Thanks, I will take a look, it seems quite interesting...