AT&T is telling customers they were hacked. Protecting data has been a big fight – from companies like AT&T

​ This week, AT&T notified millions of customers that their data was likely stolen in an April leak that the company disclosed earlier this month. Meanwhile, comprehensive laws that would protect customers from hacks keep struggling to pass, as AT&T and its rivals have fought back against and heavily influenced a patchwork of data laws – arguing the approach has failed to rein in the problem. Read More Breaking News, Latest News and Videos | CNN