70 million, which is the number of customers whose credit and debit card information was stolen when hackers took aim at retailer Target just before Christmas. As Don Reisinger of CNet reports:

The news is the latest blow to Target, which in December revealed that hackers had stolen approximately 40 million credit and debit card numbers. Target said at the time that it believed the data stolen came from transactions made between November 27 and December 15.

Not surprisingly, hackers moved quickly to take advantage of the stolen information and put the information on the black market. According to reports, following the Target breach there was a “ten-to-twentyfold increase” in stolen cards available on underground markets.

Yikes. Reminder: Make sure to keep an eye on your accounts, no matter where you shop.