dr. robert davido is a professor and cyber crime expert at drexel university.e says the problem is literally in the cards. >> we should be gradually moving over to a chip pin system. unfortunately it's not quick enough. >> reporter: the video says to get online as much as possible to check every transaction, find a problem, contact your bank right away. >> i work hard for my money. i don't want nobody else getting my money, you know. >> reporter: staples knew of a possible breach back in october but they found out and they actually made it public today that there has been a breach from july through september. chris. >> david, what do people need to do to find out if they've been affected by this? >> reporter: it's a great question. you mentioned there are a lot of stores in our area. they can go to cbsphilly.com find out where those stores are. if they're on that list what they need to do, they need to call their bank, most importantly check those bank statements and we're talking about a time frame from july through september. chris, jessica. >> david spunt fo