Headlines frequently put the world on notice that large corporations have become victims of cyber attacks, putting sometimes millions of customers' data (names, addresses, phone numbers, e-mail addresses, and sometimes even credit card numbers and other financial data) at risk.

Some of the largest attacks in the past year or so included E-Bay (145 million users), Home Depot (109 million customers), JPMorgan Chase (83 million customers), Target (70 million customers), and Michaels Stores (3 million customers). While not all of these involved the theft of customers' credit card or other financial information, all involved theft of some types of customers' personal information.

While cyber hacks of large amounts of customer data from large corporations are the events that make the headlines, small businesses actually may have more to be concerned about. The "2013 Data Breach Investigations Report," published by Verizon Communications, for example, found that over 60 percent of data breaches were at the small business level.