Good piece by my WSJ colleage Joe Pereira on the TJX debacle, the biggest known theft of credit-card numbers. It all came down to lax Wi-Fi security on the part of the retail chain’s stores. A good read:
The $17.4-billion retailer’s wireless network had less security than many people have on their home networks, and for 18 months the company — which also owns T.J. Maxx, Home Goods and A.J. Wright — had no idea what was going on. The hackers, who have not been found, downloaded at least 45.7 million credit- and debit-card numbers from about a year’s worth of records, the company says. A person familiar with the firm’s internal investigation says they may have grabbed as many as 200 million card numbers all told from four years’ records.