Hacking into your computer isn't the only way criminals get their hands on your personal information.

In some cases, thieves have been able to purchase names, addresses, financial information and even Social Security numbers from data brokers.

Credit giant Experian, for example, acknowledged that one of its subsidiaries unknowingly sold the personal data of millions of Americans -- including Social Security numbers, driver's license numbers and addresses -- to a fraudster in Vietnam, who then turned around and sold the information to identity thieves around the globe.

Experian has said it was an "unfortunate and isolated issue," but legislators have said such cases highlight the need for increased regulation.

Related: You've been hacked! Here's what to do