In advance of a Feb. 5 Commerce Committee hearing, House trio presses Target CEO for internal documents surrounding breach.
Even though malware can infect POS terminals, most need additional help to breach a retailer's computer systems.
Employee education, toolkits and member involvement can help minimize card breach damage, experts say.
Arts and crafts supply store said in letter from CEO it may have experienced a data security attack.
Copycat POS breach malware available in underground forums for just $6,000, report says.
More than 1 million cards may have been compromised in the last year, the high-end retailer said.
For years, banks have issued fraud-prone mag stripe cards, putting information at risk, the letter from the National Retail Federation said.
Credit unions tell trade association breach cost an average of $5.10 per affected card.
Ukrainian national held without bond for allegedly developing Dorbik criminal organization, which sold compromised data and counterfeit cards.
Online retailers are drawing a $279 loss for every $100 of fraud loss, partially attributed to chargebacks and their associated costs.