Check your bank balance, Avril Rhoades in Valdez, Alaska. Freeze your credit, Nazaryah Minnieweather of Victorville, California. And cancel your credit card, Jennifer Kelly in LaGrange, Georgia. A gang of thieves was selling your card information on a public Facebook group, and anyone willing to pay as little as $4 for stolen credit card information could use it to buy, say, a $1,099 iPhone and you'd get the bill. (Facebook shut down the group when notified of its existence by The Washington Post.) While microchips in credit cards have sharply reduced fraud in transactions that take place in stores, mobile and online transactions have become the low-hanging fruit of criminal opportunity. … [Read more...] about Think your credit card is safe in your wallet? Think again.