This is a big problem. The same individual backed over 150 projects. We have been in communication with a number of project owners, all of whom have been duped out of money by this scammer. This scam has been going on for months; one project backer lost over $5000, and my team lost $1200. Here's the sticking point: Amazon / Kickstarter is penalizing the project founders for the problem, but it's not the fault of the project founders. If a scam routine goes on for months and affects over 150 people for an estimated $100K or more, then we have something bigger than simple credit card fraud going on, and I propose that the funding provider has some intrinsic responsibility to address the problem. Why should the project founders have to pay money back that they've already spent in good faith on the rewards their backers asked for? The project founders had NO WAY OF KNOWING, since all responsibility for the card transactions is handled by Amazon.
Remember, we're getting hit nearly double the amount of the scam. Consider: the scammer pledges $1000 to my campaign. I use that money to build the items he pledged for. Then I ship those items. Later, Amazon wants the money back, so if it cost me $750 to make/ship the items, then I am actually losing $1750.
My recommendation is that before we talk to KS/Amazon, we all get organized. We need a consolidated list of every project founder that has been affected by this scammer, when they were affected, how much they lost, etc. As individuals, we don't stand a chance. As a group, there is a story here that can hardly be overlooked.