Security experts say what happened at Target is no surprise, given how poorly prepared big companies are to deal with data security issues.

Target says the security breach cost the company $61 million. But the net loss is only $17 million, thanks to cyber insurance policies.

Target lost tens of millions of dollars after a security breach.

Why moving to cash instead of credit has its own set of problems.

Executives are answering questions about data security.

Europeans have been using fraud resistant cards for years

Millions of Americans have had credit card and debit card information stolen by hackers at big retailers like Target and Neiman Marcus. Marketplace Money host Carmen Wong Ulrich talks to consumer advocate Bob Sullivan about what we can do to keep our money safe.

Target's CEO advises victims of the credit hack to "be cautious about sharing personal information."