Are we entitled to data security?

In a Wall Street Journal article related to Twitter’s settling of a privacy-related case, Consumer Protection Bureau Director David Vladeck states:

Consumers who use social networking sites may choose to share some information with others, but they still have a right to expect that their personal information will be kept private and secure.

If I, as a consumer, choose to create an account with a free social network service like Twitter, why am I entitled to anything beyond the terms of services to which I agreed?

Timely quotes from Thomas Jefferson

Timely quotes from Thomas Jefferson:

“The democracy will cease to exist when you take away from those who are willing to work and give to those who would not.”
“It is incumbent on every generation to pay its own debts as it goes: A principle which if acted on would save one-half the wars of the world.”
“I predict future happiness for Americans if they can prevent the government from wasting the labors of the people under the pretense of taking care of them.”
“My reading of history convinces me that most bad government results from too much government.”
“I believe that banking institutions are more dangerous to our liberties than standing armies. If the American people ever allow private banks to control the issue of their currency, first by inflation, then by deflation, the banks and corporations that will grow up around the banks will deprive the people of all property until their children wake-up homeless on the continent their fathers conquered.”