He also cites the oft-mentioned ATM example as an area where the loss of Windows XP critical updates, maintenance, and exploit patches, could be rather disastrous for a fairly critical industry. There are a number of banks that are working at a presumably fast pace to get their systems kicked up to Windows 7 from Windows XP. Others are contracting with Microsoft for additional Windows XP support – a pricey, but potential alternative - roughly $1,000 to $3,500 for each replacement machine, according to CNNMoney. ATMs aren't the only devices at risk. "Medical offices that store confidential patient information and stores that keep customer details, such as credit card numbers, on their computers running Windows XP could easily be attacked. The Target data breach last year was conducted through a trojan that attacked the shops' point of sales system. If businesses don't keep their systems safe, we will, unfortunately, see more of data breaches like this," Vlcek writes.
For more, check out Killing Windows XP Wastes Billions.