[Update: Blippy cofounder Philip Kaplan emailed a response. CNET News is reporting that the cards in question were issued by Fifth Third, not Citibank.]
[Update #2: As of Saturday morning in California, Google told Blippy they’ve removed all credit card numbers from Blippy in their index. We found one more number just before the purge completed.]
Yesterday was a big day for social-oversharing site Blippy, which lets members automatically post their purchases to the Internet. The company announced $11.2 million in funding and was profiled in The New York Times.
Overnight, at least one Internet power user figured out a way to search for Blippy members’ credit card numbers on Google. A fairly obvious search for “from card” this morning returned 127 results that included full credit card numbers.
VentureBeat reporters deduced that all are Citibank-issued MasterCard numbers, though CNET News reported that the cards in question were issued by Fifth Third, a Midwestern bank. We’re reluctant to publish further details yet. We’ve contacted Citibank, Blippy CEO Ashvin Kumar and cofounder Philip Kaplan, and some of the people whose card numbers turned up.
VB's research team is studying web-personalization... Chime in here, and we’ll share the results.