I don't quite understand the other replies, or maybe I'm missing something, but I don't think you did wrong except maybe not kicking him out your office sooner.

I don't quite understand the other replies, or maybe I'm missing something, but I don't think you did wrong except maybe not kicking him out your office sooner. Since when is it okay to lie on your resume? Seriously, is that a cultural thing maybe? IMO, it's fine to word things so that they sound more impressive (also, many people would understate their real achievements otherwise), but to state actual untruths, falsehoods in your resume? I'd say that's when the interview is over. What are you thinking, "well they may have proven to be untrustworthy and willing to lie to my face, but hey let's continue the interview and see if they have any redeeming qualities to make up for it". I'd have asked them a few short low-ball questions about those three lines (just to have them dig a whole with some vague answers). Then confront them with the original, watch/enjoy the reaction for a short moment, and calmly tell them to get out of my office. No need to waste much more time on it than that. Or are people suggesting that, maybe, this candidate might just actually have had experience with projects fitting those exact three descriptions, and merely Googled and copied the wording for its eloquence? Which would be plagiarism but not quite outright dishonesty. Kind of. Also I wouldn't believe it for a minute.