In just a few weeks, the most common way to get cash will be an easier target for hackers. Nearly every ATM in the country needs to be upgraded in less than a month. The problem is Windows XP. That's the software most ATMs use, and it's more than a decade old. On April 8th, Mircosoft will stop issuing security updates for Windows XP, so if there are holes in the operating system, they won't be fixed. Some of the biggest banks are rushing to beat the clock. Citibank and Wells Fargo are upgrading ATMs. JP Morgan Chase says their ATMs won't be upgraded until July, two months after Microsoft stops updates. So in the meantime, they struck a deal to get XP service for another year. Banks are scrambling because replacing an ATM isn't easy. Sometimes, it has to be done one at a time. But a bit of irony in this story- those very old ATMs in bars and malls-they don't need to be replaced. Windows still supports that very old software.