Just based on the headline, I had guessed that some enterprising miscreant had figured out how to siphon off some of the gas as customers were fueling - perhaps through a small tap on the line.
The way I've seen it done around here (Southern California) is more social hack than technical hack: the enterprising miscreant comes up to you with a gas canister while you're pumping and gives you some sob story how he lost his wallet and needs a few gallons to get back down to San Diego.
The article involves a scam that is slightly larger potatoes and was newer than I expected. I was under the impression that skimmer problem had been largely neutralized (not sure where I got the idea, maybe something to do with new chip card rollout). Guess not.
Another low tech scam involves thieves swapping pump handles on two sided pumps. You swipe your card and the thief on the other side of the pump gets a free fillup. Takes a bit of coordination to not get caught, but most people don't pay attention when they're filling up.
