robert siciliano is a cyber crime expert. >> when it comes to stealing credit card information it's as easy as swiping a card in any skimming device. >> reporter: a hidden camera inside a gas pump in arizona. those things, an alleged thief apparently searching for the skimmers he earlier placed on the pump to harvest card info. >> he put those in there, for i know why. because i have them. >> reporter: sean marquez installed a night vision spy camera instead. >> we may have the first-ever video of organized bad guys actually trying to retrieve their skimmers. >> reporter: credit card fraud is a $16 billion a year problem in the u.s. alone. skimmers every day, every hour, stealing your digits. >> they can use those 16 digits over the phone to place a phone they can use them online to plug it into a website. they can actually clone a card, they can burn the information onto a blank atm or credit card and use that out in the wild. >> reporter: still not afraid? listen to this reformed credit card thief. >> it's very easy. and it's a lot of money. so anything i wanted i would go out and ge

the cyberexpert robert siciliano is with us now. how rried should we be?ssia is behind arizona and shortly we'll know about illinois. how worried should we be about this? >> certainly worried. when the voting system can be compromised in any way, that is cause for concern, the moment one candidate wins and the other loses, someone is going to say foul play and we're going to have to go through the stats again. connell: what could happen? say, i'm going into vote here in new york in november, and primaries in arizona and other states that are happening today, are we concerned about the hackers going in and doing what? deleting votes that have already happened or something else? >> that certainly is a concern. right now, the initial hack, what's being reported is that voter registrations, personal information was compromised. a couple of hundred thousand's people's name, addresses, maybe the district or what their party is was compromised to our knowledge. they have not released any more information. whether or not actual election machines or the votes thems