It's to sell your information to others, who want to use it for espionage.

About 400 GB of private documents have been stolen from a hacking firm.

What these services do and do not do for you as a consumer.

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.