Slideshow: 15 worst data breaches

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.
  • 1 of 15

Credit: File photo

Heartland Payment Systems

Impact: 134 million credit cards exposed through SQL injection to install spyware on Heartland's data systems.

Take the data breach quiz

Return to slideshow
Join the discussion
Be the first to comment on this article. Our Commenting Policies