I've had this occur in a number of ways, typically with candidates who are not US Based. One candidate was clearly the "face" of a group of more skilled programmers. Several others were not the person who was listed in a resume.

Luckily enough, asking them to program while on camera makes it easy to suss out people who are not what they seem.

And if they do not have their webcam on during the interview loop, it is an automatic no-hire.