The financial and healthcare industries are already regulated, because they involve money and privacy, but really unsecured data can cost individuals their money and privacy regardless of the line of business with which it's being exposed. I'm solidly on the right hand side of the political bell curve when it comes to limiting state power and free market capitalism, but I have to say that the U.S. can do more when it comes to digital security. The government should regulate the storage and usage of sensitive data (like personal identifiers or credit card numbers) as a type of hazardous material; dictating how it should be secured and the circumstances by which it is shared with 3rd parties. It's about protecting individual rights from both commercial, government, and criminal abuse as well as securing the homeland.
"Do not seek to follow in the footsteps of the wise. Instead, seek what they sought." - Matsuo Basho