500 million accounts hack

Synopsis

In September 2016, the once dominant internet service company, while in negotiations with Verizon to purchase it, announced it had been the victim of the biggest data breach in history, likely by a state-sponsored actor in 2014. The attack compromise...

Companies

  • Altaba Inc.
  • Yahoo Inc.

We've done the analysis so you can make the decisions

Search our repository of 6,801 high-quality, objective, peer-reviewed case studies, impacting 6,874 companies and resulting in $46,199,342,870 in net costs

  • Sophisticated search & querying
  • Financial data extracted
  • Key data points captured
Want to try before you buy? You can sample one of our case studies for free here