The 15 worst data security breaches of the 21st Century

From CSO Online:

The 15 worst data security breaches of the 21st Century

Data security breaches happen daily in too many places at once to keep count. But what constitutes a huge breach versus a small one? For some perspective, we take a look at 15 of the biggest incidents in recent memory. Helping us out are security practitioners from a variety of industries, including more than a dozen members of LinkedIn's Information Security Community, who provided nominations for the list.