Mobile shoppers are naughty and nice

Jing Zhou

23% of e-retail transactions on Thanksgiving and Black Friday came from mobile devices, according to payments security firm ThreatMetrix. However, 15.5% of retailers say they’ve encountered shoppers using e-receipts in stores to make fraudulent returns. It’s been a strong mobile holiday season so far for eBay Inc.on Thanksgiving, the online marketplace says it tracked a …