Bank scammers using genuine push notifications to trick their victims
shkspr.mobi
shkspr.mobi
If a landline call was hung up at the receiving end but not at the calling end, it took about 30 seconds to time out and disconnect. Probably a feature that allows the callee to hang up and pick up again on a different extension phone.
So the scammer would call; you would rightly hang up and call the 1-800 number printed on your credit card. Only you were "calling" through the scammer's fake telco dialing sequence and... still be online with the scammer.
Wouldn't the scammer also have to play a dial tone on the line (and eventual ring) to keep the ruse going?
More discussion: https://news.ycombinator.com/item?id=40242379