Neiman Marcus and Target hacked. Protect Yourself @McAfeeConsumer

Welcome to World News. Tonight, the newest hack attack. Now we learn it wasn't just Target. Tonight, the other major department store where customers had their credit card information stolen. Why are we learning just now? Thanks. And a consumer alert here now, and word that it wasn't just Target. Now another major department store saying credit card information was stolen there as well. And it happened before Christmas. So why are customers just learning about this now? Here's ABC's Aditi Roy.

Tonight, another major retailer hit by holiday hackers. Neiman Marcus says it is investigating a security breach involving stolen credit card information from its customers. The retailer, based in Texas, says it first learned back in mid-December reports of fraudulent activity on customers' credit cards, leading some analysts to question why the luxury retailer waited weeks to to reveal the news.

It seems to me that they didn't want to ruin their Christmas shopping season.

In a statement, the company says, quote, we have begun to contain the intrusion and have taken significant steps to further enhance information security. The news comes after retail giant Target disclosed its massive data breach over the holidays may have involved up to 110 million customers.

We've just been making sure there's no unusual transactions.

The personal information stolen from Target customers included names, phone numbers, and addresses.

But it's a race against time for the bad guys. It could be anywhere from 3 weeks to 3 months or more or less until those card numbers are changed.

The Target theft could end up being the largest data breach on record for a retailer. As for Neiman Marcus, the retailer says it is still not sure of the size and scope of its security breach. David.

All of us as shoppers say not again. Aditi, thank you.