I just got weird warning on a social network about a scam that is supposedly making the rounds. However the claims were quite outlandish and I'm skeptical if it's even technically possible.
If the post is to be believed, apparently there are some scammers calling people and pretending to be cell phone network technicians. They then ask people to enter some sort of code in their phone, like #09 or something, just probably much longer (sounds like a USSD code). If the victim complies they then can reportedly make calls as if from the victim's phone/sim card, and even access their phone banking.
Now, I know that phone number spoofing is a simple and common thing, but that wouldn't allow them to do the above things. I also have never used phone banking, but I would imagine that it still requires people to authenticate themselves with a password of some kind. Well, I suppose it's possible that a bank has set up some more direct link with the major phone operators (we only have 3) which allows them to have a more substantial caller ID than just the phone number... But that would still mean that the attacker has to do some serious spoofing which goes beyond anything I've ever heard about.
So - is there a grain of truth in this tale? Is it possible to somehow grant another person the capability to impersonate you on a low level in a cell phone network? Or is this just another urban legend making its rounds on the interwebs?