From the Wall Street Journal comes an article detailing the sophisitication of hackers, and how large firms are not the only targets being stalked.  From the article:

With limited budgets and few or no technical experts on staff, small businesses generally have weak security. Cyber criminals have taken notice. In 2010, the U.S. Secret Service and Verizon Communications Inc.’s forensic analysis unit, which investigates attacks, responded to a combined 761 data breaches, up from 141 in 2009. Of those, 482, or 63%, were at companies with 100 employees or fewer.  Visa Inc. estimates about 95% of the credit-card data breaches it discovers are on its smallest business customers.

In the time it takes to break into a major company like Citigroup Inc., a hacker could steal data from dozens of small businesses and not get detected, says Bryce Case Jr., a former hacker who broke into several government and corporate websites a decade ago and now runs an online message board for hackers called Digital Gangster. Now that small companies use computers, “the juice has become worth the squeeze,” he says. “Even a pizza place has addresses, names and credit-card information.”

You can read the full article here on the Wall Street Journal website.